wans2v inference

diffsynth/configs/model_config.py

@@ -56,11 +56,13 @@ from ..models.stepvideo_vae import StepVideoVAE
 from ..models.stepvideo_dit import StepVideoModel
 
 from ..models.wan_video_dit import WanModel
+from ..models.wan_video_dit_s2v import WanS2VModel
 from ..models.wan_video_text_encoder import WanTextEncoder
 from ..models.wan_video_image_encoder import WanImageEncoder
 from ..models.wan_video_vae import WanVideoVAE, WanVideoVAE38
 from ..models.wan_video_motion_controller import WanMotionControllerModel
 from ..models.wan_video_vace import VaceWanModel
+from ..models.wav2vec import WanS2VAudioEncoder
 
 from ..models.step1x_connector import Qwen2Connector
 
@@ -155,6 +157,7 @@ model_loader_configs = [
     (None, "a61453409b67cd3246cf0c3bebad47ba", ["wan_video_dit", "wan_video_vace"], [WanModel, VaceWanModel], "civitai"),
     (None, "7a513e1f257a861512b1afd387a8ecd9", ["wan_video_dit", "wan_video_vace"], [WanModel, VaceWanModel], "civitai"),
     (None, "cb104773c6c2cb6df4f9529ad5c60d0b", ["wan_video_dit"], [WanModel], "diffusers"),
+    (None, "966cffdcc52f9c46c391768b27637614", ["wan_video_dit"], [WanS2VModel], "civitai"),
     (None, "9c8818c2cbea55eca56c7b447df170da", ["wan_video_text_encoder"], [WanTextEncoder], "civitai"),
     (None, "5941c53e207d62f20f9025686193c40b", ["wan_video_image_encoder"], [WanImageEncoder], "civitai"),
     (None, "1378ea763357eea97acdef78e65d6d96", ["wan_video_vae"], [WanVideoVAE], "civitai"),
@@ -172,6 +175,7 @@ model_loader_configs = [
     (None, "ed4ea5824d55ec3107b09815e318123a", ["qwen_image_vae"], [QwenImageVAE], "diffusers"),
     (None, "073bce9cf969e317e5662cd570c3e79c", ["qwen_image_blockwise_controlnet"], [QwenImageBlockWiseControlNet], "civitai"),
     (None, "a9e54e480a628f0b956a688a81c33bab", ["qwen_image_blockwise_controlnet"], [QwenImageBlockWiseControlNet], "civitai"),
+    (None, "06be60f3a4526586d8431cd038a71486", ["wans2v_audio_encoder"], [WanS2VAudioEncoder], "civitai"),
 ]
 huggingface_model_loader_configs = [
     # These configs are provided for detecting model type automatically.

diffsynth/data/__init__.py

@@ -1 +1 @@
-from .video import VideoData, save_video, save_frames
+from .video import VideoData, save_video, save_frames, merge_video_audio, save_video_with_audio

diffsynth/data/video.py

@@ -2,6 +2,8 @@ import imageio, os
 import numpy as np
 from PIL import Image
 from tqdm import tqdm
+import subprocess
+import shutil
 
 
 class LowMemoryVideo:
@@ -146,3 +148,70 @@ def save_frames(frames, save_path):
     os.makedirs(save_path, exist_ok=True)
     for i, frame in enumerate(tqdm(frames, desc="Saving images")):
         frame.save(os.path.join(save_path, f"{i}.png"))
+
+
+def merge_video_audio(video_path: str, audio_path: str):
+    # TODO: may need a in-python implementation to avoid subprocess dependency
+    """
+    Merge the video and audio into a new video, with the duration set to the shorter of the two,
+    and overwrite the original video file.
+
+    Parameters:
+    video_path (str): Path to the original video file
+    audio_path (str): Path to the audio file
+    """
+
+    # check
+    if not os.path.exists(video_path):
+        raise FileNotFoundError(f"video file {video_path} does not exist")
+    if not os.path.exists(audio_path):
+        raise FileNotFoundError(f"audio file {audio_path} does not exist")
+
+    base, ext = os.path.splitext(video_path)
+    temp_output = f"{base}_temp{ext}"
+
+    try:
+        # create ffmpeg command
+        command = [
+            'ffmpeg',
+            '-y',  # overwrite
+            '-i',
+            video_path,
+            '-i',
+            audio_path,
+            '-c:v',
+            'copy',  # copy video stream
+            '-c:a',
+            'aac',  # use AAC audio encoder
+            '-b:a',
+            '192k',  # set audio bitrate (optional)
+            '-map',
+            '0:v:0',  # select the first video stream
+            '-map',
+            '1:a:0',  # select the first audio stream
+            '-shortest',  # choose the shortest duration
+            temp_output
+        ]
+
+        # execute the command
+        result = subprocess.run(
+            command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
+
+        # check result
+        if result.returncode != 0:
+            error_msg = f"FFmpeg execute failed: {result.stderr}"
+            print(error_msg)
+            raise RuntimeError(error_msg)
+
+        shutil.move(temp_output, video_path)
+        print(f"Merge completed, saved to {video_path}")
+
+    except Exception as e:
+        if os.path.exists(temp_output):
+            os.remove(temp_output)
+        print(f"merge_video_audio failed with error: {e}")
+
+
+def save_video_with_audio(frames, save_path, audio_path, fps=16, quality=9, ffmpeg_params=None):
+    save_video(frames, save_path, fps, quality, ffmpeg_params)
+    merge_video_audio(save_path, audio_path)

diffsynth/models/wan_video_dit_s2v.py

@@ -0,0 +1,579 @@
+import numpy as np
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+from typing import Tuple
+from .utils import hash_state_dict_keys
+from .wan_video_dit import rearrange, precompute_freqs_cis_3d, DiTBlock, SelfAttention, Head, CrossAttention
+
+
+def torch_dfs(model: nn.Module, parent_name='root'):
+    module_names, modules = [], []
+    current_name = parent_name if parent_name else 'root'
+    module_names.append(current_name)
+    modules.append(model)
+
+    for name, child in model.named_children():
+        if parent_name:
+            child_name = f'{parent_name}.{name}'
+        else:
+            child_name = name
+        child_modules, child_names = torch_dfs(child, child_name)
+        module_names += child_names
+        modules += child_modules
+    return modules, module_names
+
+
+def rope_apply(x, freqs):
+    n, c = x.size(2), x.size(3) // 2
+    # loop over samples
+    output = []
+    for i, _ in enumerate(x):
+        s = x.size(1)
+        x_i = torch.view_as_complex(x[i, :s].to(torch.float64).reshape(s, n, -1, 2))
+        freqs_i = freqs[i, :s]
+        # apply rotary embedding
+        x_i = torch.view_as_real(x_i * freqs_i).flatten(2)
+        x_i = torch.cat([x_i, x[i, s:]])
+        # append to collection
+        output.append(x_i)
+    return torch.stack(output).to(x.dtype)
+
+
+def rope_precompute(x, grid_sizes, freqs, start=None):
+    b, s, n, c = x.size(0), x.size(1), x.size(2), x.size(3) // 2
+
+    # split freqs
+    if type(freqs) is list:
+        trainable_freqs = freqs[1]
+        freqs = freqs[0]
+    freqs = freqs.split([c - 2 * (c // 3), c // 3, c // 3], dim=1)
+
+    # loop over samples
+    output = torch.view_as_complex(x.detach().reshape(b, s, n, -1, 2).to(torch.float64))
+    seq_bucket = [0]
+    if not type(grid_sizes) is list:
+        grid_sizes = [grid_sizes]
+    for g in grid_sizes:
+        if not type(g) is list:
+            g = [torch.zeros_like(g), g]
+        batch_size = g[0].shape[0]
+        for i in range(batch_size):
+            if start is None:
+                f_o, h_o, w_o = g[0][i]
+            else:
+                f_o, h_o, w_o = start[i]
+
+            f, h, w = g[1][i]
+            t_f, t_h, t_w = g[2][i]
+            seq_f, seq_h, seq_w = f - f_o, h - h_o, w - w_o
+            seq_len = int(seq_f * seq_h * seq_w)
+            if seq_len > 0:
+                if t_f > 0:
+                    factor_f, factor_h, factor_w = (t_f / seq_f).item(), (t_h / seq_h).item(), (t_w / seq_w).item()
+                    # Generate a list of seq_f integers starting from f_o and ending at math.ceil(factor_f * seq_f.item() + f_o.item())
+                    if f_o >= 0:
+                        f_sam = np.linspace(f_o.item(), (t_f + f_o).item() - 1, seq_f).astype(int).tolist()
+                    else:
+                        f_sam = np.linspace(-f_o.item(), (-t_f - f_o).item() + 1, seq_f).astype(int).tolist()
+                    h_sam = np.linspace(h_o.item(), (t_h + h_o).item() - 1, seq_h).astype(int).tolist()
+                    w_sam = np.linspace(w_o.item(), (t_w + w_o).item() - 1, seq_w).astype(int).tolist()
+
+                    assert f_o * f >= 0 and h_o * h >= 0 and w_o * w >= 0
+                    freqs_0 = freqs[0][f_sam] if f_o >= 0 else freqs[0][f_sam].conj()
+                    freqs_0 = freqs_0.view(seq_f, 1, 1, -1)
+
+                    freqs_i = torch.cat(
+                        [
+                            freqs_0.expand(seq_f, seq_h, seq_w, -1),
+                            freqs[1][h_sam].view(1, seq_h, 1, -1).expand(seq_f, seq_h, seq_w, -1),
+                            freqs[2][w_sam].view(1, 1, seq_w, -1).expand(seq_f, seq_h, seq_w, -1),
+                        ],
+                        dim=-1
+                    ).reshape(seq_len, 1, -1)
+                elif t_f < 0:
+                    freqs_i = trainable_freqs.unsqueeze(1)
+                # apply rotary embedding
+                output[i, seq_bucket[-1]:seq_bucket[-1] + seq_len] = freqs_i
+        seq_bucket.append(seq_bucket[-1] + seq_len)
+    return output
+
+
+class CausalConv1d(nn.Module):
+
+    def __init__(self, chan_in, chan_out, kernel_size=3, stride=1, dilation=1, pad_mode='replicate', **kwargs):
+        super().__init__()
+
+        self.pad_mode = pad_mode
+        padding = (kernel_size - 1, 0)  # T
+        self.time_causal_padding = padding
+
+        self.conv = nn.Conv1d(chan_in, chan_out, kernel_size, stride=stride, dilation=dilation, **kwargs)
+
+    def forward(self, x):
+        x = F.pad(x, self.time_causal_padding, mode=self.pad_mode)
+        return self.conv(x)
+
+
+class MotionEncoder_tc(nn.Module):
+
+    def __init__(self, in_dim: int, hidden_dim: int, num_heads=int, need_global=True, dtype=None, device=None):
+        factory_kwargs = {"dtype": dtype, "device": device}
+        super().__init__()
+
+        self.num_heads = num_heads
+        self.need_global = need_global
+        self.conv1_local = CausalConv1d(in_dim, hidden_dim // 4 * num_heads, 3, stride=1)
+        if need_global:
+            self.conv1_global = CausalConv1d(in_dim, hidden_dim // 4, 3, stride=1)
+        self.norm1 = nn.LayerNorm(hidden_dim // 4, elementwise_affine=False, eps=1e-6, **factory_kwargs)
+        self.act = nn.SiLU()
+        self.conv2 = CausalConv1d(hidden_dim // 4, hidden_dim // 2, 3, stride=2)
+        self.conv3 = CausalConv1d(hidden_dim // 2, hidden_dim, 3, stride=2)
+
+        if need_global:
+            self.final_linear = nn.Linear(hidden_dim, hidden_dim, **factory_kwargs)
+
+        self.norm1 = nn.LayerNorm(hidden_dim // 4, elementwise_affine=False, eps=1e-6, **factory_kwargs)
+
+        self.norm2 = nn.LayerNorm(hidden_dim // 2, elementwise_affine=False, eps=1e-6, **factory_kwargs)
+
+        self.norm3 = nn.LayerNorm(hidden_dim, elementwise_affine=False, eps=1e-6, **factory_kwargs)
+
+        self.padding_tokens = nn.Parameter(torch.zeros(1, 1, 1, hidden_dim))
+
+    def forward(self, x):
+        x = rearrange(x, 'b t c -> b c t')
+        x_ori = x.clone()
+        b, c, t = x.shape
+        x = self.conv1_local(x)
+        x = rearrange(x, 'b (n c) t -> (b n) t c', n=self.num_heads)
+        x = self.norm1(x)
+        x = self.act(x)
+        x = rearrange(x, 'b t c -> b c t')
+        x = self.conv2(x)
+        x = rearrange(x, 'b c t -> b t c')
+        x = self.norm2(x)
+        x = self.act(x)
+        x = rearrange(x, 'b t c -> b c t')
+        x = self.conv3(x)
+        x = rearrange(x, 'b c t -> b t c')
+        x = self.norm3(x)
+        x = self.act(x)
+        x = rearrange(x, '(b n) t c -> b t n c', b=b)
+        padding = self.padding_tokens.repeat(b, x.shape[1], 1, 1).to(device=x.device, dtype=x.dtype)
+        x = torch.cat([x, padding], dim=-2)
+        x_local = x.clone()
+
+        if not self.need_global:
+            return x_local
+
+        x = self.conv1_global(x_ori)
+        x = rearrange(x, 'b c t -> b t c')
+        x = self.norm1(x)
+        x = self.act(x)
+        x = rearrange(x, 'b t c -> b c t')
+        x = self.conv2(x)
+        x = rearrange(x, 'b c t -> b t c')
+        x = self.norm2(x)
+        x = self.act(x)
+        x = rearrange(x, 'b t c -> b c t')
+        x = self.conv3(x)
+        x = rearrange(x, 'b c t -> b t c')
+        x = self.norm3(x)
+        x = self.act(x)
+        x = self.final_linear(x)
+        x = rearrange(x, '(b n) t c -> b t n c', b=b)
+
+        return x, x_local
+
+
+class FramePackMotioner(nn.Module):
+
+    def __init__(self, inner_dim=1024, num_heads=16, zip_frame_buckets=[1, 2, 16], drop_mode="drop", *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.proj = nn.Conv3d(16, inner_dim, kernel_size=(1, 2, 2), stride=(1, 2, 2))
+        self.proj_2x = nn.Conv3d(16, inner_dim, kernel_size=(2, 4, 4), stride=(2, 4, 4))
+        self.proj_4x = nn.Conv3d(16, inner_dim, kernel_size=(4, 8, 8), stride=(4, 8, 8))
+        self.zip_frame_buckets = torch.tensor(zip_frame_buckets, dtype=torch.long)
+
+        self.inner_dim = inner_dim
+        self.num_heads = num_heads
+        self.freqs = torch.cat(precompute_freqs_cis_3d(inner_dim // num_heads), dim=1)
+        self.drop_mode = drop_mode
+
+    def forward(self, motion_latents, add_last_motion=2):
+        motion_frames = motion_latents[0].shape[1]
+        mot = []
+        mot_remb = []
+        for m in motion_latents:
+            lat_height, lat_width = m.shape[2], m.shape[3]
+            padd_lat = torch.zeros(16, self.zip_frame_buckets.sum(), lat_height, lat_width).to(device=m.device, dtype=m.dtype)
+            overlap_frame = min(padd_lat.shape[1], m.shape[1])
+            if overlap_frame > 0:
+                padd_lat[:, -overlap_frame:] = m[:, -overlap_frame:]
+
+            if add_last_motion < 2 and self.drop_mode != "drop":
+                zero_end_frame = self.zip_frame_buckets[:self.zip_frame_buckets.__len__() - add_last_motion - 1].sum()
+                padd_lat[:, -zero_end_frame:] = 0
+
+            padd_lat = padd_lat.unsqueeze(0)
+            clean_latents_4x, clean_latents_2x, clean_latents_post = padd_lat[:, :, -self.zip_frame_buckets.sum():, :, :].split(
+                list(self.zip_frame_buckets)[::-1], dim=2
+            )  # 16, 2 ,1
+
+            # patchfy
+            clean_latents_post = self.proj(clean_latents_post).flatten(2).transpose(1, 2)
+            clean_latents_2x = self.proj_2x(clean_latents_2x).flatten(2).transpose(1, 2)
+            clean_latents_4x = self.proj_4x(clean_latents_4x).flatten(2).transpose(1, 2)
+
+            if add_last_motion < 2 and self.drop_mode == "drop":
+                clean_latents_post = clean_latents_post[:, :0] if add_last_motion < 2 else clean_latents_post
+                clean_latents_2x = clean_latents_2x[:, :0] if add_last_motion < 1 else clean_latents_2x
+
+            motion_lat = torch.cat([clean_latents_post, clean_latents_2x, clean_latents_4x], dim=1)
+
+            # rope
+            start_time_id = -(self.zip_frame_buckets[:1].sum())
+            end_time_id = start_time_id + self.zip_frame_buckets[0]
+            grid_sizes = [] if add_last_motion < 2 and self.drop_mode == "drop" else \
+                        [
+                            [torch.tensor([start_time_id, 0, 0]).unsqueeze(0).repeat(1, 1),
+                            torch.tensor([end_time_id, lat_height // 2, lat_width // 2]).unsqueeze(0).repeat(1, 1),
+                            torch.tensor([self.zip_frame_buckets[0], lat_height // 2, lat_width // 2]).unsqueeze(0).repeat(1, 1), ]
+                        ]
+
+            start_time_id = -(self.zip_frame_buckets[:2].sum())
+            end_time_id = start_time_id + self.zip_frame_buckets[1] // 2
+            grid_sizes_2x = [] if add_last_motion < 1 and self.drop_mode == "drop" else \
+            [
+                [torch.tensor([start_time_id, 0, 0]).unsqueeze(0).repeat(1, 1),
+                torch.tensor([end_time_id, lat_height // 4, lat_width // 4]).unsqueeze(0).repeat(1, 1),
+                torch.tensor([self.zip_frame_buckets[1], lat_height // 2, lat_width // 2]).unsqueeze(0).repeat(1, 1), ]
+            ]
+
+            start_time_id = -(self.zip_frame_buckets[:3].sum())
+            end_time_id = start_time_id + self.zip_frame_buckets[2] // 4
+            grid_sizes_4x = [
+                [
+                    torch.tensor([start_time_id, 0, 0]).unsqueeze(0).repeat(1, 1),
+                    torch.tensor([end_time_id, lat_height // 8, lat_width // 8]).unsqueeze(0).repeat(1, 1),
+                    torch.tensor([self.zip_frame_buckets[2], lat_height // 2, lat_width // 2]).unsqueeze(0).repeat(1, 1),
+                ]
+            ]
+
+            grid_sizes = grid_sizes + grid_sizes_2x + grid_sizes_4x
+
+            motion_rope_emb = rope_precompute(
+                motion_lat.detach().view(1, motion_lat.shape[1], self.num_heads, self.inner_dim // self.num_heads),
+                grid_sizes,
+                self.freqs,
+                start=None
+            )
+
+            mot.append(motion_lat)
+            mot_remb.append(motion_rope_emb)
+        return mot, mot_remb
+
+
+class AdaLayerNorm(nn.Module):
+
+    def __init__(
+        self,
+        embedding_dim: int,
+        output_dim: int,
+        norm_eps: float = 1e-5,
+    ):
+        super().__init__()
+        self.silu = nn.SiLU()
+        self.linear = nn.Linear(embedding_dim, output_dim)
+        self.norm = nn.LayerNorm(output_dim // 2, norm_eps, elementwise_affine=False)
+
+    def forward(self, x, temb):
+        temb = self.linear(F.silu(temb))
+        shift, scale = temb.chunk(2, dim=1)
+        shift = shift[:, None, :]
+        scale = scale[:, None, :]
+        x = self.norm(x) * (1 + scale) + shift
+        return x
+
+
+class AudioInjector_WAN(nn.Module):
+
+    def __init__(
+        self,
+        all_modules,
+        all_modules_names,
+        dim=2048,
+        num_heads=32,
+        inject_layer=[0, 27],
+        enable_adain=False,
+        adain_dim=2048,
+    ):
+        super().__init__()
+        self.injected_block_id = {}
+        audio_injector_id = 0
+        for mod_name, mod in zip(all_modules_names, all_modules):
+            if isinstance(mod, DiTBlock):
+                for inject_id in inject_layer:
+                    if f'transformer_blocks.{inject_id}' in mod_name:
+                        self.injected_block_id[inject_id] = audio_injector_id
+                        audio_injector_id += 1
+
+        self.injector = nn.ModuleList([CrossAttention(
+            dim=dim,
+            num_heads=num_heads,
+        ) for _ in range(audio_injector_id)])
+        self.injector_pre_norm_feat = nn.ModuleList([nn.LayerNorm(
+            dim,
+            elementwise_affine=False,
+            eps=1e-6,
+        ) for _ in range(audio_injector_id)])
+        self.injector_pre_norm_vec = nn.ModuleList([nn.LayerNorm(
+            dim,
+            elementwise_affine=False,
+            eps=1e-6,
+        ) for _ in range(audio_injector_id)])
+        if enable_adain:
+            self.injector_adain_layers = nn.ModuleList([AdaLayerNorm(output_dim=dim * 2, embedding_dim=adain_dim) for _ in range(audio_injector_id)])
+
+
+class CausalAudioEncoder(nn.Module):
+
+    def __init__(self, dim=5120, num_layers=25, out_dim=2048, num_token=4, need_global=False):
+        super().__init__()
+        self.encoder = MotionEncoder_tc(in_dim=dim, hidden_dim=out_dim, num_heads=num_token, need_global=need_global)
+        weight = torch.ones((1, num_layers, 1, 1)) * 0.01
+
+        self.weights = torch.nn.Parameter(weight)
+        self.act = torch.nn.SiLU()
+
+    def forward(self, features):
+        # features B * num_layers * dim * video_length
+        weights = self.act(self.weights.to(device=features.device, dtype=features.dtype))
+        weights_sum = weights.sum(dim=1, keepdims=True)
+        weighted_feat = ((features * weights) / weights_sum).sum(dim=1)  # b dim f
+        weighted_feat = weighted_feat.permute(0, 2, 1)  # b f dim
+        res = self.encoder(weighted_feat)  # b f n dim
+        return res  # b f n dim
+
+
+class WanS2VSelfAttention(SelfAttention):
+
+    def forward(self, x, freqs):
+        b, s, n, d = *x.shape[:2], self.num_heads, self.head_dim
+        q = self.norm_q(self.q(x)).view(b, s, n, d)
+        k = self.norm_k(self.k(x)).view(b, s, n, d)
+        v = self.v(x)
+        q = rope_apply(q, freqs)
+        k = rope_apply(k, freqs)
+        x = self.attn(q.view(b, s, n * d), k.view(b, s, n * d), v)
+        return self.o(x)
+
+
+class WanS2VDiTBlock(DiTBlock):
+
+    def __init__(self, dim, num_heads, ffn_dim, eps=1e-6, has_image_input=False):
+        super().__init__(has_image_input=has_image_input, dim=dim, num_heads=num_heads, ffn_dim=ffn_dim, eps=eps)
+        self.self_attn = WanS2VSelfAttention(dim, num_heads, eps)
+
+    def forward(self, x, context, e, freqs):
+        seg_idx = e[1].item()
+        seg_idx = min(max(0, seg_idx), x.size(1))
+        seg_idx = [0, seg_idx, x.size(1)]
+        e = e[0]
+        modulation = self.modulation.unsqueeze(2).to(dtype=e.dtype, device=e.device)
+        e = (modulation + e).chunk(6, dim=1)
+        e = [element.squeeze(1) for element in e]
+        norm_x = self.norm1(x)
+        parts = []
+        for i in range(2):
+            parts.append(norm_x[:, seg_idx[i]:seg_idx[i + 1]] * (1 + e[1][:, i:i + 1]) + e[0][:, i:i + 1])
+        norm_x = torch.cat(parts, dim=1)
+        # self-attention
+        y = self.self_attn(norm_x, freqs)
+        z = []
+        for i in range(2):
+            z.append(y[:, seg_idx[i]:seg_idx[i + 1]] * e[2][:, i:i + 1])
+        y = torch.cat(z, dim=1)
+        x = x + y
+
+        # cross-attention & ffn function
+        def cross_attn_ffn(x, context, e):
+            x = x + self.cross_attn(self.norm3(x), context)
+            norm2_x = self.norm2(x)
+            parts = []
+            for i in range(2):
+                parts.append(norm2_x[:, seg_idx[i]:seg_idx[i + 1]] * (1 + e[4][:, i:i + 1]) + e[3][:, i:i + 1])
+            norm2_x = torch.cat(parts, dim=1)
+            y = self.ffn(norm2_x)
+            z = []
+            for i in range(2):
+                z.append(y[:, seg_idx[i]:seg_idx[i + 1]] * e[5][:, i:i + 1])
+            y = torch.cat(z, dim=1)
+            x = x + y
+            return x
+
+        x = cross_attn_ffn(x, context, e)
+        return x
+
+
+class S2VHead(Head):
+
+    def forward(self, x, t_mod):
+        t_mod = (self.modulation.to(dtype=t_mod.dtype, device=t_mod.device) + t_mod.unsqueeze(1)).chunk(2, dim=1)
+        x = (self.head(self.norm(x) * (1 + t_mod[1]) + t_mod[0]))
+        return x
+
+
+class WanS2VModel(torch.nn.Module):
+
+    def __init__(
+        self,
+        dim: int,
+        in_dim: int,
+        ffn_dim: int,
+        out_dim: int,
+        text_dim: int,
+        freq_dim: int,
+        eps: float,
+        patch_size: Tuple[int, int, int],
+        num_heads: int,
+        num_layers: int,
+        cond_dim: int,
+        audio_dim: int,
+        num_audio_token: int,
+        enable_adain: bool = True,
+        audio_inject_layers: list = [0, 4, 8, 12, 16, 20, 24, 27, 30, 33, 36, 39],
+        zero_timestep: bool = True,
+        add_last_motion: bool = True,
+        framepack_drop_mode: str = "padd",
+        fuse_vae_embedding_in_latents: bool = True,
+        require_vae_embedding: bool = False,
+        seperated_timestep: bool = False,
+        require_clip_embedding: bool = False,
+    ):
+        super().__init__()
+        self.dim = dim
+        self.in_dim = in_dim
+        self.freq_dim = freq_dim
+        self.patch_size = patch_size
+        self.num_heads = num_heads
+        self.enbale_adain = enable_adain
+        self.add_last_motion = add_last_motion
+        self.zero_timestep = zero_timestep
+        self.fuse_vae_embedding_in_latents = fuse_vae_embedding_in_latents
+        self.require_vae_embedding = require_vae_embedding
+        self.seperated_timestep = seperated_timestep
+        self.require_clip_embedding = require_clip_embedding
+
+        self.patch_embedding = nn.Conv3d(in_dim, dim, kernel_size=patch_size, stride=patch_size)
+        self.text_embedding = nn.Sequential(nn.Linear(text_dim, dim), nn.GELU(approximate='tanh'), nn.Linear(dim, dim))
+        self.time_embedding = nn.Sequential(nn.Linear(freq_dim, dim), nn.SiLU(), nn.Linear(dim, dim))
+        self.time_projection = nn.Sequential(nn.SiLU(), nn.Linear(dim, dim * 6))
+
+        self.blocks = nn.ModuleList([WanS2VDiTBlock(dim, num_heads, ffn_dim, eps) for _ in range(num_layers)])
+        self.head = S2VHead(dim, out_dim, patch_size, eps)
+        self.freqs = precompute_freqs_cis_3d(dim // num_heads)
+
+        self.cond_encoder = nn.Conv3d(cond_dim, dim, kernel_size=patch_size, stride=patch_size)
+        self.casual_audio_encoder = CausalAudioEncoder(dim=audio_dim, out_dim=dim, num_token=num_audio_token, need_global=enable_adain)
+        all_modules, all_modules_names = torch_dfs(self.blocks, parent_name="root.transformer_blocks")
+        # TODO: refactor dfs
+        self.audio_injector = AudioInjector_WAN(
+            all_modules,
+            all_modules_names,
+            dim=dim,
+            num_heads=num_heads,
+            inject_layer=audio_inject_layers,
+            enable_adain=enable_adain,
+            adain_dim=dim,
+        )
+        self.trainable_cond_mask = nn.Embedding(3, dim)
+        self.frame_packer = FramePackMotioner(inner_dim=dim, num_heads=num_heads, zip_frame_buckets=[1, 2, 16], drop_mode=framepack_drop_mode)
+
+    def patchify(self, x: torch.Tensor):
+        grid_size = x.shape[2:]
+        x = rearrange(x, 'b c f h w -> b (f h w) c').contiguous()
+        return x, grid_size  # x, grid_size: (f, h, w)
+
+    def unpatchify(self, x: torch.Tensor, grid_size: torch.Tensor):
+        return rearrange(
+            x,
+            'b (f h w) (x y z c) -> b c (f x) (h y) (w z)',
+            f=grid_size[0],
+            h=grid_size[1],
+            w=grid_size[2],
+            x=self.patch_size[0],
+            y=self.patch_size[1],
+            z=self.patch_size[2]
+        )
+
+    def process_motion_frame_pack(self, motion_latents, drop_motion_frames=False, add_last_motion=2):
+        flattern_mot, mot_remb = self.frame_packer(motion_latents, add_last_motion)
+        if drop_motion_frames:
+            return [m[:, :0] for m in flattern_mot], [m[:, :0] for m in mot_remb]
+        else:
+            return flattern_mot, mot_remb
+
+    def inject_motion(self, x, seq_lens, rope_embs, mask_input, motion_latents, drop_motion_frames=True, add_last_motion=2):
+        # inject the motion frames token to the hidden states
+        mot, mot_remb = self.process_motion_frame_pack(motion_latents, drop_motion_frames=drop_motion_frames, add_last_motion=add_last_motion)
+        if len(mot) > 0:
+            x = torch.cat([x, mot[0]], dim=1)
+            seq_lens = seq_lens + torch.tensor([r.size(1) for r in mot], dtype=torch.long)
+            rope_embs = torch.cat([rope_embs, mot_remb[0]], dim=1)
+            mask_input = torch.cat(
+                [mask_input, 2 * torch.ones([1, x.shape[1] - mask_input.shape[1]], device=mask_input.device, dtype=mask_input.dtype)], dim=1
+            )
+        return x, seq_lens, rope_embs, mask_input
+
+    def after_transformer_block(self, block_idx, hidden_states, audio_emb_global, audio_emb, original_seq_len):
+        if block_idx in self.audio_injector.injected_block_id.keys():
+            audio_attn_id = self.audio_injector.injected_block_id[block_idx]
+            num_frames = audio_emb.shape[1]
+
+            input_hidden_states = hidden_states[:, :original_seq_len].clone()  # b (f h w) c
+            input_hidden_states = rearrange(input_hidden_states, "b (t n) c -> (b t) n c", t=num_frames)
+
+            audio_emb_global = rearrange(audio_emb_global, "b t n c -> (b t) n c")
+            adain_hidden_states = self.audio_injector.injector_adain_layers[audio_attn_id](input_hidden_states, temb=audio_emb_global[:, 0])
+            attn_hidden_states = adain_hidden_states
+
+            audio_emb = rearrange(audio_emb, "b t n c -> (b t) n c", t=num_frames)
+            attn_audio_emb = audio_emb
+            residual_out = self.audio_injector.injector[audio_attn_id](attn_hidden_states, attn_audio_emb)
+            residual_out = rearrange(residual_out, "(b t) n c -> b (t n) c", t=num_frames)
+            hidden_states[:, :original_seq_len] = hidden_states[:, :original_seq_len] + residual_out
+
+        return hidden_states
+
+    @staticmethod
+    def state_dict_converter():
+        return WanS2VModelStateDictConverter()
+
+
+class WanS2VModelStateDictConverter:
+
+    def __init__(self):
+        pass
+
+    def from_civitai(self, state_dict):
+        config = {}
+        if hash_state_dict_keys(state_dict) == "966cffdcc52f9c46c391768b27637614":
+            config = {
+                "dim": 5120,
+                "in_dim": 16,
+                "ffn_dim": 13824,
+                "out_dim": 16,
+                "text_dim": 4096,
+                "freq_dim": 256,
+                "eps": 1e-06,
+                "patch_size": (1, 2, 2),
+                "num_heads": 40,
+                "num_layers": 40,
+                "cond_dim": 16,
+                "audio_dim": 1024,
+                "num_audio_token": 4,
+            }
+        return state_dict, config

diffsynth/models/wav2vec.py

@@ -0,0 +1,199 @@
+import math
+import numpy as np
+import torch
+import torch.nn.functional as F
+
+
+def get_sample_indices(original_fps, total_frames, target_fps, num_sample, fixed_start=None):
+    required_duration = num_sample / target_fps
+    required_origin_frames = int(np.ceil(required_duration * original_fps))
+    if required_duration > total_frames / original_fps:
+        raise ValueError("required_duration must be less than video length")
+
+    if not fixed_start is None and fixed_start >= 0:
+        start_frame = fixed_start
+    else:
+        max_start = total_frames - required_origin_frames
+        if max_start < 0:
+            raise ValueError("video length is too short")
+        start_frame = np.random.randint(0, max_start + 1)
+    start_time = start_frame / original_fps
+
+    end_time = start_time + required_duration
+    time_points = np.linspace(start_time, end_time, num_sample, endpoint=False)
+
+    frame_indices = np.round(np.array(time_points) * original_fps).astype(int)
+    frame_indices = np.clip(frame_indices, 0, total_frames - 1)
+    return frame_indices
+
+
+def linear_interpolation(features, input_fps, output_fps, output_len=None):
+    """
+    features: shape=[1, T, 512]
+    input_fps: fps for audio, f_a
+    output_fps: fps for video, f_m
+    output_len: video length
+    """
+    features = features.transpose(1, 2)
+    seq_len = features.shape[2] / float(input_fps)
+    if output_len is None:
+        output_len = int(seq_len * output_fps)
+    output_features = F.interpolate(features, size=output_len, align_corners=True, mode='linear')  # [1, 512, output_len]
+    return output_features.transpose(1, 2)
+
+
+class WanS2VAudioEncoder(torch.nn.Module):
+
+    def __init__(self):
+        super().__init__()
+        from transformers import Wav2Vec2ForCTC, Wav2Vec2Config
+        config = {
+            "_name_or_path": "facebook/wav2vec2-large-xlsr-53",
+            "activation_dropout": 0.05,
+            "apply_spec_augment": True,
+            "architectures": ["Wav2Vec2ForCTC"],
+            "attention_dropout": 0.1,
+            "bos_token_id": 1,
+            "conv_bias": True,
+            "conv_dim": [512, 512, 512, 512, 512, 512, 512],
+            "conv_kernel": [10, 3, 3, 3, 3, 2, 2],
+            "conv_stride": [5, 2, 2, 2, 2, 2, 2],
+            "ctc_loss_reduction": "mean",
+            "ctc_zero_infinity": True,
+            "do_stable_layer_norm": True,
+            "eos_token_id": 2,
+            "feat_extract_activation": "gelu",
+            "feat_extract_dropout": 0.0,
+            "feat_extract_norm": "layer",
+            "feat_proj_dropout": 0.05,
+            "final_dropout": 0.0,
+            "hidden_act": "gelu",
+            "hidden_dropout": 0.05,
+            "hidden_size": 1024,
+            "initializer_range": 0.02,
+            "intermediate_size": 4096,
+            "layer_norm_eps": 1e-05,
+            "layerdrop": 0.05,
+            "mask_channel_length": 10,
+            "mask_channel_min_space": 1,
+            "mask_channel_other": 0.0,
+            "mask_channel_prob": 0.0,
+            "mask_channel_selection": "static",
+            "mask_feature_length": 10,
+            "mask_feature_prob": 0.0,
+            "mask_time_length": 10,
+            "mask_time_min_space": 1,
+            "mask_time_other": 0.0,
+            "mask_time_prob": 0.05,
+            "mask_time_selection": "static",
+            "model_type": "wav2vec2",
+            "num_attention_heads": 16,
+            "num_conv_pos_embedding_groups": 16,
+            "num_conv_pos_embeddings": 128,
+            "num_feat_extract_layers": 7,
+            "num_hidden_layers": 24,
+            "pad_token_id": 0,
+            "transformers_version": "4.7.0.dev0",
+            "vocab_size": 33
+        }
+        self.model = Wav2Vec2ForCTC(Wav2Vec2Config(**config))
+        self.video_rate = 30
+
+    def extract_audio_feat(self, input_audio, sample_rate, processor, return_all_layers=False, dtype=torch.float32):
+        input_values = processor(input_audio, sampling_rate=sample_rate, return_tensors="pt").input_values.to(self.model.dtype)
+
+        # retrieve logits & take argmax
+        res = self.model(input_values.to(self.model.device), output_hidden_states=True)
+        if return_all_layers:
+            feat = torch.cat(res.hidden_states)
+        else:
+            feat = res.hidden_states[-1]
+        feat = linear_interpolation(feat, input_fps=50, output_fps=self.video_rate)
+
+        z = feat.to(dtype)
+        return z
+
+    def get_audio_embed_bucket(self, audio_embed, stride=2, batch_frames=12, m=2):
+        num_layers, audio_frame_num, audio_dim = audio_embed.shape
+
+        if num_layers > 1:
+            return_all_layers = True
+        else:
+            return_all_layers = False
+
+        min_batch_num = int(audio_frame_num / (batch_frames * stride)) + 1
+
+        bucket_num = min_batch_num * batch_frames
+        batch_idx = [stride * i for i in range(bucket_num)]
+        batch_audio_eb = []
+        for bi in batch_idx:
+            if bi < audio_frame_num:
+                audio_sample_stride = 2
+                chosen_idx = list(range(bi - m * audio_sample_stride, bi + (m + 1) * audio_sample_stride, audio_sample_stride))
+                chosen_idx = [0 if c < 0 else c for c in chosen_idx]
+                chosen_idx = [audio_frame_num - 1 if c >= audio_frame_num else c for c in chosen_idx]
+
+                if return_all_layers:
+                    frame_audio_embed = audio_embed[:, chosen_idx].flatten(start_dim=-2, end_dim=-1)
+                else:
+                    frame_audio_embed = audio_embed[0][chosen_idx].flatten()
+            else:
+                frame_audio_embed = \
+                torch.zeros([audio_dim * (2 * m + 1)], device=audio_embed.device) if not return_all_layers \
+                    else torch.zeros([num_layers, audio_dim * (2 * m + 1)], device=audio_embed.device)
+            batch_audio_eb.append(frame_audio_embed)
+        batch_audio_eb = torch.cat([c.unsqueeze(0) for c in batch_audio_eb], dim=0)
+
+        return batch_audio_eb, min_batch_num
+
+    def get_audio_embed_bucket_fps(self, audio_embed, fps=16, batch_frames=81, m=0):
+        num_layers, audio_frame_num, audio_dim = audio_embed.shape
+
+        if num_layers > 1:
+            return_all_layers = True
+        else:
+            return_all_layers = False
+
+        scale = self.video_rate / fps
+
+        min_batch_num = int(audio_frame_num / (batch_frames * scale)) + 1
+
+        bucket_num = min_batch_num * batch_frames
+        padd_audio_num = math.ceil(min_batch_num * batch_frames / fps * self.video_rate) - audio_frame_num
+        batch_idx = get_sample_indices(
+            original_fps=self.video_rate, total_frames=audio_frame_num + padd_audio_num, target_fps=fps, num_sample=bucket_num, fixed_start=0
+        )
+        batch_audio_eb = []
+        audio_sample_stride = int(self.video_rate / fps)
+        for bi in batch_idx:
+            if bi < audio_frame_num:
+
+                chosen_idx = list(range(bi - m * audio_sample_stride, bi + (m + 1) * audio_sample_stride, audio_sample_stride))
+                chosen_idx = [0 if c < 0 else c for c in chosen_idx]
+                chosen_idx = [audio_frame_num - 1 if c >= audio_frame_num else c for c in chosen_idx]
+
+                if return_all_layers:
+                    frame_audio_embed = audio_embed[:, chosen_idx].flatten(start_dim=-2, end_dim=-1)
+                else:
+                    frame_audio_embed = audio_embed[0][chosen_idx].flatten()
+            else:
+                frame_audio_embed = \
+                torch.zeros([audio_dim * (2 * m + 1)], device=audio_embed.device) if not return_all_layers \
+                    else torch.zeros([num_layers, audio_dim * (2 * m + 1)], device=audio_embed.device)
+            batch_audio_eb.append(frame_audio_embed)
+        batch_audio_eb = torch.cat([c.unsqueeze(0) for c in batch_audio_eb], dim=0)
+
+        return batch_audio_eb, min_batch_num
+
+    @staticmethod
+    def state_dict_converter():
+        return WanS2VAudioEncoderStateDictConverter()
+
+
+class WanS2VAudioEncoderStateDictConverter():
+    def __init__(self):
+        pass
+
+    def from_civitai(self, state_dict):
+        state_dict = {'model.' + k: v for k, v in state_dict.items()}
+        return state_dict

diffsynth/pipelines/wan_video_new.py

@@ -15,6 +15,7 @@ from typing_extensions import Literal
 from ..utils import BasePipeline, ModelConfig, PipelineUnit, PipelineUnitRunner
 from ..models import ModelManager, load_state_dict
 from ..models.wan_video_dit import WanModel, RMSNorm, sinusoidal_embedding_1d
+from ..models.wan_video_dit_s2v import rope_precompute
 from ..models.wan_video_text_encoder import WanTextEncoder, T5RelativeEmbedding, T5LayerNorm
 from ..models.wan_video_vae import WanVideoVAE, RMS_norm, CausalConv3d, Upsample
 from ..models.wan_video_image_encoder import WanImageEncoder
@@ -49,6 +50,7 @@ class WanVideoPipeline(BasePipeline):
         self.units = [
             WanVideoUnit_ShapeChecker(),
             WanVideoUnit_NoiseInitializer(),
+            WanVideoUnit_S2V(),
             WanVideoUnit_InputVideoEmbedder(),
             WanVideoUnit_PromptEmbedder(),
             WanVideoUnit_ImageEmbedderVAE(),
@@ -127,6 +129,8 @@ class WanVideoPipeline(BasePipeline):
                     torch.nn.LayerNorm: WanAutoCastLayerNorm,
                     RMSNorm: AutoWrappedModule,
                     torch.nn.Conv2d: AutoWrappedModule,
+                    torch.nn.Conv1d: AutoWrappedModule,
+                    torch.nn.Embedding: AutoWrappedModule,
                 },
                 module_config = dict(
                     offload_dtype=dtype,
@@ -254,6 +258,24 @@ class WanVideoPipeline(BasePipeline):
                 ),
                 vram_limit=vram_limit,
             )
+        if self.audio_encoder is not None:
+            # TODO: need check
+            dtype = next(iter(self.audio_encoder.parameters())).dtype
+            enable_vram_management(
+                self.audio_encoder,
+                module_map = {
+                    torch.nn.Linear: AutoWrappedLinear,
+                    torch.nn.LayerNorm: AutoWrappedModule,
+                },
+                module_config = dict(
+                    offload_dtype=dtype,
+                    offload_device="cpu",
+                    onload_dtype=dtype,
+                    onload_device="cpu",
+                    computation_dtype=dtype,
+                    computation_device=self.device,
+                ),
+            )
             
             
     def initialize_usp(self):
@@ -290,6 +312,7 @@ class WanVideoPipeline(BasePipeline):
         device: Union[str, torch.device] = "cuda",
         model_configs: list[ModelConfig] = [],
         tokenizer_config: ModelConfig = ModelConfig(model_id="Wan-AI/Wan2.1-T2V-1.3B", origin_file_pattern="google/*"),
+        audio_processor_config: ModelConfig = None,
         redirect_common_files: bool = True,
         use_usp=False,
     ):
@@ -332,7 +355,8 @@ class WanVideoPipeline(BasePipeline):
         pipe.image_encoder = model_manager.fetch_model("wan_video_image_encoder")
         pipe.motion_controller = model_manager.fetch_model("wan_video_motion_controller")
         pipe.vace = model_manager.fetch_model("wan_video_vace")
-        
+        pipe.audio_encoder = model_manager.fetch_model("wans2v_audio_encoder")
+
         # Size division factor
         if pipe.vae is not None:
             pipe.height_division_factor = pipe.vae.upsampling_factor * 2
@@ -342,7 +366,11 @@ class WanVideoPipeline(BasePipeline):
         tokenizer_config.download_if_necessary(use_usp=use_usp)
         pipe.prompter.fetch_models(pipe.text_encoder)
         pipe.prompter.fetch_tokenizer(tokenizer_config.path)
-        
+
+        if audio_processor_config is not None:
+            audio_processor_config.download_if_necessary(use_usp=use_usp)
+            from transformers import Wav2Vec2Processor
+            pipe.audio_processor = Wav2Vec2Processor.from_pretrained(audio_processor_config.path)
         # Unified Sequence Parallel
         if use_usp: pipe.enable_usp()
         return pipe
@@ -361,6 +389,10 @@ class WanVideoPipeline(BasePipeline):
         # Video-to-video
         input_video: Optional[list[Image.Image]] = None,
         denoising_strength: Optional[float] = 1.0,
+        # Speech-to-video
+        input_audio: Optional[str] = None,
+        audio_sample_rate: Optional[int] = 16000,
+        s2v_pose_video: Optional[list[Image.Image]] = None,
         # ControlNet
         control_video: Optional[list[Image.Image]] = None,
         reference_image: Optional[Image.Image] = None,
@@ -429,6 +461,7 @@ class WanVideoPipeline(BasePipeline):
             "motion_bucket_id": motion_bucket_id,
             "tiled": tiled, "tile_size": tile_size, "tile_stride": tile_stride,
             "sliding_window_size": sliding_window_size, "sliding_window_stride": sliding_window_stride,
+            "input_audio": input_audio, "audio_sample_rate": audio_sample_rate, "s2v_pose_video": s2v_pose_video,
         }
         for unit in self.units:
             inputs_shared, inputs_posi, inputs_nega = self.unit_runner(unit, self, inputs_shared, inputs_posi, inputs_nega)
@@ -868,6 +901,67 @@ class WanVideoUnit_CfgMerger(PipelineUnit):
         return inputs_shared, inputs_posi, inputs_nega
 
 
+class WanVideoUnit_S2V(PipelineUnit):
+    def __init__(self):
+        super().__init__(
+            take_over=True,
+            onload_model_names=("audio_encoder", "vae", )
+        )
+
+    def process_audio(self, pipe: WanVideoPipeline, input_audio, audio_sample_rate, num_frames):
+        if input_audio is None or pipe.audio_encoder is None or pipe.audio_processor is None:
+            return {}
+        pipe.load_models_to_device(["audio_encoder"])
+        z = pipe.audio_encoder.extract_audio_feat(input_audio, audio_sample_rate, pipe.audio_processor, return_all_layers=True)
+        audio_embed_bucket, num_repeat = pipe.audio_encoder.get_audio_embed_bucket_fps(
+            z, fps=16, batch_frames=num_frames - 1, m=0
+        )
+        audio_embed_bucket = audio_embed_bucket.unsqueeze(0).to(pipe.device, pipe.torch_dtype)
+        if len(audio_embed_bucket.shape) == 3:
+            audio_embed_bucket = audio_embed_bucket.permute(0, 2, 1)
+        elif len(audio_embed_bucket.shape) == 4:
+            audio_embed_bucket = audio_embed_bucket.permute(0, 2, 3, 1)
+        audio_embed_bucket = audio_embed_bucket[..., 0:num_frames-1]
+        return {"audio_input": audio_embed_bucket}
+
+    def process_motion_latents(self, pipe: WanVideoPipeline, height, width, tiled, tile_size, tile_stride):
+        pipe.load_models_to_device(["vae"])
+        # TODO: may support input motion latents
+        motion_frames = 73
+        motion_latents = torch.zeros([1, 3, motion_frames, height, width], dtype=pipe.torch_dtype, device=pipe.device)
+        lat_motion_frames = (motion_frames + 3) // 4
+        motion_latents = pipe.vae.encode(motion_latents, device=pipe.device, tiled=tiled, tile_size=tile_size, tile_stride=tile_stride).to(dtype=pipe.torch_dtype, device=pipe.device)
+        return {"motion_latents": motion_latents, "motion_frames": [motion_frames, lat_motion_frames]}
+
+    def process_pose_cond(self, pipe: WanVideoPipeline, s2v_pose_video, num_frames, height, width, tiled, tile_size, tile_stride):
+        pipe.load_models_to_device(["vae"])
+        if s2v_pose_video is None:
+            input_video = -torch.ones(1, 3, num_frames, height, width, device=pipe.device, dtype=pipe.torch_dtype)
+        else:
+            input_video = pipe.preprocess_video(s2v_pose_video)
+            # get num_frames-1 frames
+            input_video = input_video[:, :, :num_frames]
+            # pad if not enough frames
+            padding_frames =  num_frames - input_video.shape[2]
+            input_video = torch.cat([input_video, -torch.ones(1, 3, padding_frames, height, width, device=input_video.device, dtype=input_video.dtype)], dim=2)
+        # encode to latents
+        input_latents = pipe.vae.encode(input_video, device=pipe.device, tiled=tiled, tile_size=tile_size, tile_stride=tile_stride).to(dtype=pipe.torch_dtype, device=pipe.device)
+        return {"pose_cond": input_latents[:,:,1:]}
+
+    def process(self, pipe: WanVideoPipeline, inputs_shared, inputs_posi, inputs_nega):
+        if inputs_shared.get("input_audio") is None or pipe.audio_encoder is None or pipe.audio_processor is None:
+            return inputs_shared, inputs_posi, inputs_nega
+        input_audio, audio_sample_rate, s2v_pose_video, num_frames, height, width = inputs_shared.get("input_audio"), inputs_shared.get("audio_sample_rate"), inputs_shared.get("s2v_pose_video"), inputs_shared.get("num_frames"), inputs_shared.get("height"), inputs_shared.get("width")
+        tiled, tile_size, tile_stride = inputs_shared.get("tiled"), inputs_shared.get("tile_size"), inputs_shared.get("tile_stride")
+
+        audio_input_positive = self.process_audio(pipe, input_audio, audio_sample_rate, num_frames)
+        inputs_posi.update(audio_input_positive)
+        inputs_nega.update({"audio_input": 0.0 * audio_input_positive["audio_input"]})
+
+        inputs_shared.update(self.process_motion_latents(pipe, height, width, tiled, tile_size, tile_stride))
+        inputs_shared.update(self.process_pose_cond(pipe, s2v_pose_video, num_frames, height, width, tiled, tile_size, tile_stride))
+        return inputs_shared, inputs_posi, inputs_nega
+
 
 class TeaCache:
     def __init__(self, num_inference_steps, rel_l1_thresh, model_id):
@@ -987,6 +1081,10 @@ def model_fn_wan_video(
     reference_latents = None,
     vace_context = None,
     vace_scale = 1.0,
+    audio_input: Optional[torch.Tensor] = None,
+    motion_latents: Optional[torch.Tensor] = None,
+    motion_frames: Optional[list] = None,
+    pose_cond: Optional[torch.Tensor] = None,
     tea_cache: TeaCache = None,
     use_unified_sequence_parallel: bool = False,
     motion_bucket_id: Optional[torch.Tensor] = None,
@@ -1024,7 +1122,21 @@ def model_fn_wan_video(
             tensor_names=["latents", "y"],
             batch_size=2 if cfg_merge else 1
         )
-    
+    # wan2.2 s2v
+    if audio_input is not None:
+        return model_fn_wans2v(
+            dit=dit,
+            latents=latents,
+            timestep=timestep,
+            context=context,
+            audio_input=audio_input,
+            motion_latents=motion_latents,
+            motion_frames=motion_frames,
+            pose_cond=pose_cond,
+            use_gradient_checkpointing_offload=use_gradient_checkpointing_offload,
+            use_gradient_checkpointing=use_gradient_checkpointing,
+        )
+
     if use_unified_sequence_parallel:
         import torch.distributed as dist
         from xfuser.core.distributed import (get_sequence_parallel_rank,
@@ -1143,3 +1255,107 @@ def model_fn_wan_video(
         f -= 1
     x = dit.unpatchify(x, (f, h, w))
     return x
+
+
+def model_fn_wans2v(
+    dit,
+    latents,
+    timestep,
+    context,
+    audio_input,
+    motion_latents,
+    motion_frames,
+    pose_cond,
+    use_gradient_checkpointing_offload=False,
+    use_gradient_checkpointing=False
+):
+    origin_ref_latents = latents[:, :, 0:1]
+    latents = latents[:, :, 1:]
+
+    audio_input = torch.cat([audio_input[..., 0:1].repeat(1, 1, 1, motion_frames[0]), audio_input], dim=-1)
+    audio_emb_global, audio_emb = dit.casual_audio_encoder(audio_input)
+    audio_emb_global = audio_emb_global[:, motion_frames[1]:].clone()
+    merged_audio_emb = audio_emb[:, motion_frames[1]:, :]
+
+    # reference image
+    x = latents
+    pose_cond = torch.zeros_like(x) if pose_cond is None else pose_cond
+    x, (f, h, w) = dit.patchify(dit.patch_embedding(x) + dit.cond_encoder(pose_cond))
+
+    grid_sizes = torch.tensor([f, h, w], dtype=torch.long).unsqueeze(0)
+    seq_lens = torch.tensor([x.size(1)], dtype=torch.long)
+    grid_sizes = [[torch.zeros_like(grid_sizes), grid_sizes, grid_sizes]]
+
+    ref_latents, (rf, rh, rw) = dit.patchify(dit.patch_embedding(origin_ref_latents))
+
+    ref_grid_sizes = [[
+            torch.tensor([30, 0, 0]).unsqueeze(0),
+            torch.tensor([31, rh, rw]).unsqueeze(0),
+            torch.tensor([1, rh, rw]).unsqueeze(0),
+        ]]
+    original_seq_len = seq_lens[0]
+    seq_lens = seq_lens + torch.tensor([ref_latents.shape[1]], dtype=torch.long)
+    grid_sizes = grid_sizes + ref_grid_sizes
+
+    x = torch.cat([x, ref_latents], dim=1)
+    mask = torch.zeros([1, x.shape[1]], dtype=torch.long, device=x.device)
+    mask[:, -ref_latents.shape[1]:] = 1
+
+    b, s, n, d = x.size(0), x.size(1), dit.num_heads, dit.dim // dit.num_heads
+    pre_compute_freqs = rope_precompute(x.detach().view(b, s, n, d), grid_sizes, torch.cat(dit.freqs, dim=1), start=None)
+
+    x, seq_lens, pre_compute_freqs, mask = dit.inject_motion(x, seq_lens, pre_compute_freqs, mask, motion_latents, add_last_motion=2)
+    x = x + dit.trainable_cond_mask(mask).to(x.dtype)
+
+    # t_mod
+    if dit.zero_timestep:
+        timestep = torch.cat([timestep, torch.zeros([1], dtype=timestep.dtype, device=timestep.device)])
+    e = dit.time_embedding(sinusoidal_embedding_1d(dit.freq_dim, timestep))
+    e0 = dit.time_projection(e).unflatten(1, (6, dit.dim))
+    if dit.zero_timestep:
+        e = e[:-1]
+        zero_e0 = e0[-1:]
+        e0 = e0[:-1]
+        e0 = torch.cat([e0.unsqueeze(2), zero_e0.unsqueeze(2).repeat(e0.size(0), 1, 1, 1)], dim=2)
+        e0 = [e0, original_seq_len]
+    # context
+    context = dit.text_embedding(context)
+
+    def create_custom_forward(module):
+        def custom_forward(*inputs):
+            return module(*inputs)
+        return custom_forward
+
+    for block_id, block in enumerate(dit.blocks):
+        if use_gradient_checkpointing_offload:
+            with torch.autograd.graph.save_on_cpu():
+                x = torch.utils.checkpoint.checkpoint(
+                    create_custom_forward(block),
+                    x, context, e0, pre_compute_freqs,
+                    use_reentrant=False,
+                )
+                x = torch.utils.checkpoint.checkpoint(
+                    create_custom_forward(lambda x: dit.after_transformer_block(block_id, x, audio_emb_global, merged_audio_emb, original_seq_len)),
+                    x,
+                    use_reentrant=False,
+                )
+        elif use_gradient_checkpointing:
+            x = torch.utils.checkpoint.checkpoint(
+                create_custom_forward(block),
+                x, context, e0, pre_compute_freqs,
+                use_reentrant=False,
+            )
+            x = torch.utils.checkpoint.checkpoint(
+                create_custom_forward(lambda x: dit.after_transformer_block(block_id, x, audio_emb_global, merged_audio_emb, original_seq_len)),
+                x,
+                use_reentrant=False,
+            )
+        else:
+            x = block(x, context, e0, pre_compute_freqs)
+            x = dit.after_transformer_block(block_id, x, audio_emb_global, merged_audio_emb, original_seq_len)
+
+    x = x[:, :original_seq_len]
+    x = dit.head(x, e)
+    x = dit.unpatchify(x, (f, h, w))
+    x = torch.cat([origin_ref_latents, x], dim=2)
+    return x

examples/wanvideo/model_inference/Wan2.1-S2V-14B.py

@@ -0,0 +1,63 @@
+import torch
+from PIL import Image
+import librosa
+from diffsynth import save_video, VideoData, save_video_with_audio
+from diffsynth.pipelines.wan_video_new import WanVideoPipeline, ModelConfig
+
+pipe = WanVideoPipeline.from_pretrained(
+    torch_dtype=torch.bfloat16,
+    device="cuda",
+    model_configs=[
+        ModelConfig(model_id="Wan-AI/Wan2.2-S2V-14B", origin_file_pattern="diffusion_pytorch_model*.safetensors"),
+        ModelConfig(model_id="Wan-AI/Wan2.2-S2V-14B", origin_file_pattern="wav2vec2-large-xlsr-53-english/model.safetensors"),
+        ModelConfig(model_id="Wan-AI/Wan2.2-S2V-14B", origin_file_pattern="models_t5_umt5-xxl-enc-bf16.pth"),
+        ModelConfig(model_id="Wan-AI/Wan2.2-S2V-14B", origin_file_pattern="Wan2.1_VAE.pth"),
+    ],
+    audio_processor_config=ModelConfig(model_id="Wan-AI/Wan2.2-S2V-14B", origin_file_pattern="wav2vec2-large-xlsr-53-english/"),
+)
+num_frames = 81 # 4n+1
+height = 448
+width = 832
+
+prompt = "a person is singing"
+input_image = Image.open("/mnt/nas1/zhanghong/project/aigc/Wan2.2_s2v/examples/pose.png").convert("RGB").resize((width, height))
+# s2v audio input, recommend 16kHz sampling rate
+audio_path = '/mnt/nas1/zhanghong/project/aigc/Wan2.2_s2v/examples/sing.MP3'
+input_audio, sample_rate = librosa.load(audio_path, sr=16000)
+
+# Speech-to-video
+video = pipe(
+    prompt=prompt,
+    input_image=input_image,
+    negative_prompt="",
+    seed=0,
+    num_frames=num_frames,
+    height=height,
+    width=width,
+    audio_sample_rate=sample_rate,
+    input_audio=input_audio,
+    num_inference_steps=40,
+)
+save_video_with_audio(video, "video_with_audio.mp4", audio_path, fps=16, quality=5)
+
+# s2v will use the first (num_frames) frames as reference. height and width must be the same as input_image. And fps should be 16, the same as output video fps.
+pose_video_path = '/mnt/nas1/zhanghong/project/aigc/Wan2.2_s2v/examples/pose.mp4'
+pose_video = VideoData(pose_video_path, height=height, width=width)
+pose_video.set_length(num_frames)
+
+# Speech-to-video with pose
+video = pipe(
+    prompt=prompt,
+    input_image=input_image,
+    negative_prompt="",
+    seed=0,
+    num_frames=num_frames,
+    height=height,
+    width=width,
+    audio_sample_rate=sample_rate,
+    input_audio=input_audio,
+    s2v_pose_video=pose_video,
+    num_inference_steps=40,
+)
+save_video_with_audio(video, "video_pose_with_audio.mp4", audio_path, fps=16, quality=5)
+save_video(pose_video, "video_pose_input.mp4", fps=16, quality=5)