flashtalk 优化，视频总是比音频短一截

FlashTalk 升级音画同步算法，视频和音频，一秒都不差。flashtalkgenerate_video_lite.py/data/lbg/project/Digital_Human/SoulX-FlashTalk-main/generate_video_lite.py# Copyright 2024-2025 The Alibaba Wan Team Authors. All rights reserved. import argparse import os import numpy as np import time import torch import torch.distributed as dist import subprocess import imageio import librosa import numpy as np from loguru import logger from collections import deque from datetime import datetime from flash_talk.inference import get_pipeline, get_base_data, get_audio_embedding, run_pipeline, infer_params def _validate_args(args): # Basic check assert args.ckpt_dir is not None, "Please specify FlashT