# Copyright 2024-2025 The Alibaba Wan Team Authors. All rights reserved. import argparse import logging import os import sys import json import warnings from datetime import datetime import gc warnings.filterwarnings('ignore') import random import torch import torch.distributed as dist from PIL import Image import subprocess import wan from wan.configs import SIZE_CONFIGS, SUPPORTED_SIZES, WAN_CONFIGS from wan.utils.utils import cache_image, cache_video, str2bool from wan.utils.multitalk_utils import save_video_ffmpeg from transformers import Wav2Vec2FeatureExtractor from src.audio_analysis.wav2vec2 import Wav2Vec2Model import librosa import pyloudnorm as pyln import numpy as np from einops import rearrange import soundfile as sf def _validate_args(args): # Basic check assert args.ckpt_dir is not None, "Please specify the checkpoint directory." assert args.task in WAN_CONFIGS, f"Unsupport task: {args.task}" # The default sampling steps are 40 for image-to-video tasks and 50 for text-to-video tasks. if args.sample_steps is None: args.sample_steps = 40 if args.sample_shift is None: if args.size == 'multitalk-480': args.sample_shift = 7 elif args.size == 'multitalk-720': args.sample_shift = 11 else: raise NotImplementedError(f'Not supported size') args.base_seed = args.base_seed if args.base_seed >= 0 else random.randint( 0, 99999999) # Size check assert args.size in SUPPORTED_SIZES[ args. task], f"Unsupport size {args.size} for task {args.task}, supported sizes are: {', '.join(SUPPORTED_SIZES[args.task])}" def _parse_args(): parser = argparse.ArgumentParser( description="Generate a image or video from a text prompt or image using Wan" ) parser.add_argument( "--task", type=str, default="multitalk-14B", choices=list(WAN_CONFIGS.keys()), help="The task to run.") parser.add_argument( "--size", type=str, default="multitalk-480", choices=list(SIZE_CONFIGS.keys()), help="The buckget size of the generated video. The aspect ratio of the output video will follow that of the input image." ) parser.add_argument( "--frame_num", type=int, default=81, help="How many frames to be generated in one clip. The number should be 4n+1" ) parser.add_argument( "--ckpt_dir", type=str, default=None, help="The path to the Wan checkpoint directory.") parser.add_argument( "--wav2vec_dir", type=str, default=None, help="The path to the wav2vec checkpoint directory.") parser.add_argument( "--offload_model", type=str2bool, default=None, help="Whether to offload the model to CPU after each model forward, reducing GPU memory usage." ) parser.add_argument( "--ulysses_size", type=int, default=1, help="The size of the ulysses parallelism in DiT.") parser.add_argument( "--ring_size", type=int, default=1, help="The size of the ring attention parallelism in DiT.") parser.add_argument( "--t5_fsdp", action="store_true", default=False, help="Whether to use FSDP for T5.") parser.add_argument( "--t5_cpu", action="store_true", default=False, help="Whether to place T5 model on CPU.") parser.add_argument( "--dit_fsdp", action="store_true", default=False, help="Whether to use FSDP for DiT.") parser.add_argument( "--save_file", type=str, default=None, help="The file to save the generated image or video to.") parser.add_argument( "--audio_save_dir", type=str, default='save_audio', help="The path to save the audio embedding.") parser.add_argument( "--base_seed", type=int, default=42, help="The seed to use for generating the image or video.") parser.add_argument( "--input_json", type=str, default='examples.json', help="[meta file] The condition path to generate the video.") parser.add_argument( "--motion_frame", type=int, default=25, help="Driven frame length used in the mode of long video genration.") parser.add_argument( "--mode", type=str, default="clip", choices=['clip', 'streaming'], help="clip: generate one video chunk, streaming: long video generation") parser.add_argument( "--sample_steps", type=int, default=None, help="The sampling steps.") parser.add_argument( "--sample_shift", type=float, default=None, help="Sampling shift factor for flow matching schedulers.") parser.add_argument( "--sample_text_guide_scale", type=float, default=5.0, help="Classifier free guidance scale for text control.") parser.add_argument( "--sample_audio_guide_scale", type=float, default=4.0, help="Classifier free guidance scale for audio control.") parser.add_argument( "--num_persistent_param_in_dit", type=int, default=None, required=False, help="Maximum parameter quantity retained in video memory, small number to reduce VRAM required", ) parser.add_argument( "--use_teacache", action="store_true", default=False, help="Enable teacache for video generation." ) parser.add_argument( "--teacache_thresh", type=float, default=0.2, help="Threshold for teacache." ) parser.add_argument( "--use_apg", action="store_true", default=False, help="Enable adaptive projected guidance for video generation (APG)." ) parser.add_argument( "--apg_momentum", type=float, default=-0.75, help="Momentum used in adaptive projected guidance (APG)." ) parser.add_argument( "--apg_norm_threshold", type=float, default=55, help="Norm threshold used in adaptive projected guidance (APG)." ) args = parser.parse_args() _validate_args(args) return args def custom_init(device, wav2vec): audio_encoder = Wav2Vec2Model.from_pretrained(wav2vec, local_files_only=True).to(device) audio_encoder.feature_extractor._freeze_parameters() wav2vec_feature_extractor = Wav2Vec2FeatureExtractor.from_pretrained(wav2vec, local_files_only=True) return wav2vec_feature_extractor, audio_encoder def loudness_norm(audio_array, sr=16000, lufs=-23): meter = pyln.Meter(sr) loudness = meter.integrated_loudness(audio_array) if abs(loudness) > 100: return audio_array normalized_audio = pyln.normalize.loudness(audio_array, loudness, lufs) return normalized_audio def audio_prepare_multi(left_path, right_path, audio_type, sample_rate=16000): if not (left_path=='None' or right_path=='None'): human_speech_array1 = audio_prepare_single(left_path) human_speech_array2 = audio_prepare_single(right_path) elif left_path=='None': human_speech_array2 = audio_prepare_single(right_path) human_speech_array1 = np.zeros(human_speech_array2.shape[0]) elif right_path=='None': human_speech_array1 = audio_prepare_single(left_path) human_speech_array2 = np.zeros(human_speech_array1.shape[0]) if audio_type=='para': new_human_speech1 = human_speech_array1 new_human_speech2 = human_speech_array2 elif audio_type=='add': new_human_speech1 = np.concatenate([human_speech_array1[: human_speech_array1.shape[0]], np.zeros(human_speech_array2.shape[0])]) new_human_speech2 = np.concatenate([np.zeros(human_speech_array1.shape[0]), human_speech_array2[:human_speech_array2.shape[0]]]) sum_human_speechs = new_human_speech1 + new_human_speech2 return new_human_speech1, new_human_speech2, sum_human_speechs def _init_logging(rank): # logging if rank == 0: # set format logging.basicConfig( level=logging.INFO, format="[%(asctime)s] %(levelname)s: %(message)s", handlers=[logging.StreamHandler(stream=sys.stdout)]) else: logging.basicConfig(level=logging.ERROR) def get_embedding(speech_array, wav2vec_feature_extractor, audio_encoder, sr=16000, device='cpu'): audio_duration = len(speech_array) / sr video_length = audio_duration * 25 # Assume the video fps is 25 # wav2vec_feature_extractor audio_feature = np.squeeze( wav2vec_feature_extractor(speech_array, sampling_rate=sr).input_values ) audio_feature = torch.from_numpy(audio_feature).float().to(device=device) audio_feature = audio_feature.unsqueeze(0) # audio encoder with torch.no_grad(): embeddings = audio_encoder(audio_feature, seq_len=int(video_length), output_hidden_states=True) if len(embeddings) == 0: print("Fail to extract audio embedding") return None audio_emb = torch.stack(embeddings.hidden_states[1:], dim=1).squeeze(0) audio_emb = rearrange(audio_emb, "b s d -> s b d") audio_emb = audio_emb.cpu().detach() return audio_emb def extract_audio_from_video(filename, sample_rate): raw_audio_path = filename.split('/')[-1].split('.')[0]+'.wav' ffmpeg_command = [ "ffmpeg", "-y", "-i", str(filename), "-vn", "-acodec", "pcm_s16le", "-ar", "16000", "-ac", "2", str(raw_audio_path), ] subprocess.run(ffmpeg_command, check=True) human_speech_array, sr = librosa.load(raw_audio_path, sr=sample_rate) human_speech_array = loudness_norm(human_speech_array, sr) os.remove(raw_audio_path) return human_speech_array def audio_prepare_single(audio_path, sample_rate=16000): ext = os.path.splitext(audio_path)[1].lower() if ext in ['.mp4', '.mov', '.avi', '.mkv']: human_speech_array = extract_audio_from_video(audio_path, sample_rate) return human_speech_array else: human_speech_array, sr = librosa.load(audio_path, sr=sample_rate) human_speech_array = loudness_norm(human_speech_array, sr) return human_speech_array def generate(args): rank = int(os.getenv("RANK", 0)) world_size = int(os.getenv("WORLD_SIZE", 1)) local_rank = int(os.getenv("LOCAL_RANK", 0)) device = local_rank _init_logging(rank) if args.offload_model is None: args.offload_model = False if world_size > 1 else True logging.info( f"offload_model is not specified, set to {args.offload_model}.") if world_size > 1: torch.cuda.set_device(local_rank) dist.init_process_group( backend="nccl", init_method="env://", rank=rank, world_size=world_size) else: assert not ( args.t5_fsdp or args.dit_fsdp ), f"t5_fsdp and dit_fsdp are not supported in non-distributed environments." assert not ( args.ulysses_size > 1 or args.ring_size > 1 ), f"context parallel are not supported in non-distributed environments." if args.ulysses_size > 1 or args.ring_size > 1: assert args.ulysses_size * args.ring_size == world_size, f"The number of ulysses_size and ring_size should be equal to the world size." from xfuser.core.distributed import ( init_distributed_environment, initialize_model_parallel, ) init_distributed_environment( rank=dist.get_rank(), world_size=dist.get_world_size()) initialize_model_parallel( sequence_parallel_degree=dist.get_world_size(), ring_degree=args.ring_size, ulysses_degree=args.ulysses_size, ) # TODO: use prompt refine # if args.use_prompt_extend: # if args.prompt_extend_method == "dashscope": # prompt_expander = DashScopePromptExpander( # model_name=args.prompt_extend_model, # is_vl="i2v" in args.task or "flf2v" in args.task) # elif args.prompt_extend_method == "local_qwen": # prompt_expander = QwenPromptExpander( # model_name=args.prompt_extend_model, # is_vl="i2v" in args.task, # device=rank) # else: # raise NotImplementedError( # f"Unsupport prompt_extend_method: {args.prompt_extend_method}") cfg = WAN_CONFIGS[args.task] if args.ulysses_size > 1: assert cfg.num_heads % args.ulysses_size == 0, f"`{cfg.num_heads=}` cannot be divided evenly by `{args.ulysses_size=}`." logging.info(f"Generation job args: {args}") logging.info(f"Generation model config: {cfg}") if dist.is_initialized(): base_seed = [args.base_seed] if rank == 0 else [None] dist.broadcast_object_list(base_seed, src=0) args.base_seed = base_seed[0] assert args.task == "multitalk-14B", 'You should choose multitalk in args.task.' # TODO: add prompt refine # img = Image.open(args.image).convert("RGB") # if args.use_prompt_extend: # logging.info("Extending prompt ...") # if rank == 0: # prompt_output = prompt_expander( # args.prompt, # tar_lang=args.prompt_extend_target_lang, # image=img, # seed=args.base_seed) # if prompt_output.status == False: # logging.info( # f"Extending prompt failed: {prompt_output.message}") # logging.info("Falling back to original prompt.") # input_prompt = args.prompt # else: # input_prompt = prompt_output.prompt # input_prompt = [input_prompt] # else: # input_prompt = [None] # if dist.is_initialized(): # dist.broadcast_object_list(input_prompt, src=0) # args.prompt = input_prompt[0] # logging.info(f"Extended prompt: {args.prompt}") # read input files with open(args.input_json, 'r', encoding='utf-8') as f: input_data = json.load(f) wav2vec_feature_extractor, audio_encoder= custom_init('cpu', args.wav2vec_dir) args.audio_save_dir = os.path.join(args.audio_save_dir, input_data['cond_image'].split('/')[-1].split('.')[0]) os.makedirs(args.audio_save_dir,exist_ok=True) if len(input_data['cond_audio'])==2: new_human_speech1, new_human_speech2, sum_human_speechs = audio_prepare_multi(input_data['cond_audio']['person1'], input_data['cond_audio']['person2'], input_data['audio_type']) audio_embedding_1 = get_embedding(new_human_speech1, wav2vec_feature_extractor, audio_encoder) audio_embedding_2 = get_embedding(new_human_speech2, wav2vec_feature_extractor, audio_encoder) emb1_path = os.path.join(args.audio_save_dir, '1.pt') emb2_path = os.path.join(args.audio_save_dir, '2.pt') sum_audio = os.path.join(args.audio_save_dir, 'sum.wav') sf.write(sum_audio, sum_human_speechs, 16000) torch.save(audio_embedding_1, emb1_path) torch.save(audio_embedding_2, emb2_path) input_data['cond_audio']['person1'] = emb1_path input_data['cond_audio']['person2'] = emb2_path input_data['video_audio'] = sum_audio elif len(input_data['cond_audio'])==1: human_speech = audio_prepare_single(input_data['cond_audio']['person1']) audio_embedding = get_embedding(human_speech, wav2vec_feature_extractor, audio_encoder) emb_path = os.path.join(args.audio_save_dir, '1.pt') sum_audio = os.path.join(args.audio_save_dir, 'sum.wav') sf.write(sum_audio, human_speech, 16000) torch.save(audio_embedding, emb_path) input_data['cond_audio']['person1'] = emb_path input_data['video_audio'] = sum_audio logging.info("Creating MultiTalk pipeline.") wan_i2v = wan.MultiTalkPipeline( config=cfg, checkpoint_dir=args.ckpt_dir, device_id=device, rank=rank, t5_fsdp=args.t5_fsdp, dit_fsdp=args.dit_fsdp, use_usp=(args.ulysses_size > 1 or args.ring_size > 1), t5_cpu=args.t5_cpu ) if args.num_persistent_param_in_dit is not None: wan_i2v.vram_management = True wan_i2v.enable_vram_management( num_persistent_param_in_dit=args.num_persistent_param_in_dit ) logging.info("Generating video ...") video = wan_i2v.generate( input_data, size_buckget=args.size, motion_frame=args.motion_frame, frame_num=args.frame_num, shift=args.sample_shift, sampling_steps=args.sample_steps, text_guide_scale=args.sample_text_guide_scale, audio_guide_scale=args.sample_audio_guide_scale, seed=args.base_seed, offload_model=args.offload_model, max_frames_num=args.frame_num if args.mode == 'clip' else 1000, extra_args=args, ) if rank == 0: if args.save_file is None: formatted_time = datetime.now().strftime("%Y%m%d_%H%M%S") formatted_prompt = input_data['prompt'].replace(" ", "_").replace("/", "_")[:50] args.save_file = f"{args.task}_{args.size.replace('*','x') if sys.platform=='win32' else args.size}_{args.ulysses_size}_{args.ring_size}_{formatted_prompt}_{formatted_time}" logging.info(f"Saving generated video to {args.save_file}.mp4") save_video_ffmpeg(video, args.save_file, [input_data['video_audio']]) logging.info("Finished.") if torch.cuda.is_available(): torch.cuda.empty_cache() torch.cuda.ipc_collect() # optional but useful with multiprocessing gc.collect() if dist.is_initialized(): dist.destroy_process_group() if __name__ == "__main__": args = _parse_args() generate(args)