app.py

import gradio as gr
import whisper
import yt_dlp
import os
from deep_translator import GoogleTranslator
from edge_tts import Communicate
import asyncio
import logging
import tempfile
import re
import requests
import json
from urllib.parse import parse_qs, urlparse
import torch

# 设置日志
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

# 设置缓存目录
CACHE_DIR = "model_cache"
os.makedirs(CACHE_DIR, exist_ok=True)

# 创建必要的文件夹
os.makedirs("uploads", exist_ok=True)
os.makedirs("subtitles", exist_ok=True)
os.makedirs("audio", exist_ok=True)
os.makedirs("output", exist_ok=True)

try:
    from moviepy.editor import VideoFileClip, AudioFileClip, CompositeVideoClip, concatenate_audioclips, CompositeAudioClip
    logger.info("Successfully imported moviepy")
except ImportError as e:
    logger.error(f"Error importing moviepy: {e}")
    raise

# 延迟加载模型
model = None
def get_model():
    global model
    if model is None:
        logger.info("Loading Whisper model...")
        model = whisper.load_model("base", download_root=CACHE_DIR)
        logger.info("Whisper model loaded")
    return model

translator = GoogleTranslator(source='en', target='zh-CN')

# Edge TTS 支持的中文语音列表
CHINESE_VOICES = {
    # 中国台湾
    "zh-TW-HsiaoChenNeural": "曉臻 - 女声 (台湾国语)",
    "zh-TW-YunJheNeural": "雲哲 - 男声 (台湾国语)",
    "zh-TW-HsiaoYuNeural": "曉雨 - 女声 (台湾国语)",
    # 中国大陆
    "zh-CN-YunxiNeural": "云希 - 男声 (大陆标准普通话)",
    "zh-CN-YunjianNeural": "云健 - 男声 (大陆标准普通话)",
    "zh-CN-XiaoyiNeural": "晓伊 - 女声 (大陆标准普通话)",
    "zh-CN-YunyangNeural": "云扬 - 男声 (大陆新闻播报)",
    "zh-CN-XiaochenNeural": "晓辰 - 女声 (大陆标准普通话)",
    "zh-CN-XiaohanNeural": "晓涵 - 女声 (大陆标准普通话)",
    "zh-CN-XiaomengNeural": "晓梦 - 女声 (大陆标准普通话)",
    "zh-CN-XiaomoNeural": "晓墨 - 女声 (大陆标准普通话)",
    "zh-CN-XiaoxuanNeural": "晓萱 - 女声 (大陆标准普通话)",
    "zh-CN-XiaoyanNeural": "晓颜 - 女声 (大陆标准普通话)",
    "zh-CN-XiaoyouNeural": "晓悠 - 女声 (大陆标准普通话)",
    
    # 中国香港
    "zh-HK-HiuGaaiNeural": "曉薇 - 女声 (香港粤语)",
    "zh-HK-HiuMaanNeural": "曉曼 - 女声 (香港粤语)",
    "zh-HK-WanLungNeural": "云龍 - 男声 (香港粤语)",
}

def extract_video_id(url):
    """从YouTube URL中提取视频ID"""
    if 'youtu.be' in url:
        return url.split('/')[-1]
    if 'youtube.com' in url:
        query = urlparse(url).query
        return parse_qs(query).get('v', [None])[0]
    return None

def get_youtube_formats(url, cookies=None):
    video_id = extract_video_id(url)
    if not video_id:
        raise gr.Error("无效的YouTube链接")
    
    ydl_opts = {
        'quiet': True,
        'no_warnings': True,
        'format': 'best',
    }
    
    if cookies:
        with tempfile.NamedTemporaryFile(mode='w', delete=False, suffix='.txt') as f:
            f.write(cookies)
            ydl_opts['cookiefile'] = f.name
    
    try:
        url = f"https://www.youtube.com/watch?v={video_id}"
        with yt_dlp.YoutubeDL(ydl_opts) as ydl:
            try:
                info = ydl.extract_info(url, download=False)
                if info is None:
                    raise gr.Error("无法获取视频信息，请检查链接或尝试使用cookies")
                
                # 分别显示视频和音频格式
                video_formats = []
                audio_formats = []
                
                # 格式化标题行
                format_header = "{:<6} {:<10} {:<16} {:<8} {:<12} {:<10} {:<8} {:<15}".format(
                    "ID", "格式", "分辨率/采样率", "帧率", "编码", "比特率", "大小", "说明"
                )
                separator = "-" * 90
                
                for f in info['formats']:
                    if not (f.get('vcodec') == 'none' and f.get('acodec') == 'none'):
                        # 视频格式
                        if f.get('vcodec') != 'none' and f.get('acodec') == 'none':
                            resolution = f"{f.get('width', 'N/A')}x{f.get('height', 'N/A')}"
                            format_info = "{:<6} {:<10} {:<16} {:<8} {:<12} {:<10} {:<8} {:<15}".format(
                                f['format_id'],
                                f.get('ext', 'N/A'),
                                resolution,
                                f"{f.get('fps', 'N/A')}fps",
                                f.get('vcodec', 'N/A').split('.')[0],
                                f"{f.get('vbr', f.get('tbr', 'N/A'))}k",
                                f"{f.get('filesize', 0)/1024/1024:.1f}M",
                                f.get('format_note', '')
                            )
                            video_formats.append(format_info)
                        # 音频格式
                        elif f.get('vcodec') == 'none' and f.get('acodec') != 'none':
                            format_info = "{:<6} {:<10} {:<16} {:<8} {:<12} {:<10} {:<8} {:<15}".format(
                                f['format_id'],
                                f.get('ext', 'N/A'),
                                f"{f.get('asr', 'N/A')}Hz",
                                "-",
                                f.get('acodec', 'N/A').split('.')[0],
                                f"{f.get('abr', f.get('tbr', 'N/A'))}k",
                                f"{f.get('filesize', 0)/1024/1024:.1f}M",
                                f.get('format_note', '')
                            )
                            audio_formats.append(format_info)
                
                # 组合最终显示文本
                formats_text = "【视频格式】(仅视频流)\n"
                formats_text += format_header + "\n" + separator + "\n"
                formats_text += "\n".join(video_formats)
                
                formats_text += "\n\n【音频格式】(仅音频流)\n"
                formats_text += format_header + "\n" + separator + "\n"
                formats_text += "\n".join(audio_formats)
                
                formats_text += "\n\n提示：\n"
                formats_text += "1. 下载时需要组合视频和音频格式，用+号连接，例如：137+140\n"
                formats_text += "2. 建议选择相近大小的视频和音频格式组合\n"
                formats_text += "3. 一般选择 mp4+m4a 或 webm+webm 的组合\n"
                formats_text += "4. 数字越大通常表示质量越好"
                
                return formats_text
            except Exception as e:
                logger.error(f"获取格式列表失败: {e}")
                raise gr.Error(f"获取格式列表失败: {str(e)}")
    except Exception as e:
        logger.error(f"Error getting formats: {e}")
        raise gr.Error(f"获取格式列表失败: {str(e)}")

def download_youtube(url, format_id=None, cookies=None):
    video_id = extract_video_id(url)
    if not video_id:
        raise gr.Error("无效的YouTube链接")
    
    ydl_opts = {
        'format': 'best',
        'outtmpl': 'uploads/%(title)s.%(ext)s',
        'quiet': True,
        'no_warnings': True,
    }
    if format_id and format_id != "best":
        format_ids = re.split(r'[,+]', format_id.split(':')[0])
        ydl_opts['format'] = '+'.join(format_ids)
    if cookies:
        with tempfile.NamedTemporaryFile(mode='w', delete=False, suffix='.txt') as f:
            f.write(cookies)
            ydl_opts['cookiefile'] = f.name
    
    with tempfile.TemporaryDirectory() as temp_dir:
        ydl_opts['outtmpl'] = os.path.join(temp_dir, '%(title)s.%(ext)s')
        try:
            with yt_dlp.YoutubeDL(ydl_opts) as ydl:
                try:
                    info = ydl.extract_info(url, download=True)
                    if info is None:
                        raise gr.Error("无法获取视频信息，请检查链接或尝试使用cookies")
                    filename = ydl.prepare_filename(info)
                    final_path = os.path.join("uploads", os.path.basename(filename))
                    os.rename(filename, final_path)
                    return final_path
                except Exception as e:
                    logger.error(f"下载视频失败: {e}")
                    raise gr.Error(f"下载视频失败: {str(e)}")
        except Exception as e:
            logger.error(f"下载视频失败: {e}")
            raise gr.Error(f"下载视频失败: {str(e)}")

def generate_subtitles(video_path):
    model = get_model()  # 延迟加载模型
    options = {
        "language": "en",
        "beam_size": 1,  # 减小beam size加快处理
        "best_of": 1,    # 减小候选数量
        "fp16": torch.cuda.is_available()
    }
    result = model.transcribe(video_path, **options)
    srt_path = "subtitles/english.srt"
    with open(srt_path, "w", encoding="utf-8") as f:
        for i, seg in enumerate(result["segments"], 1):
            start = format_timestamp(seg["start"])
            end = format_timestamp(seg["end"])
            text = seg["text"].strip()
            f.write(f"{i}\n{start} --> {end}\n{text}\n\n")
    return srt_path

def translate_subtitles(en_srt):
    cn_srt = "subtitles/chinese.srt"
    with open(en_srt, "r", encoding="utf-8") as f:
        lines = f.readlines()
    
    with open(cn_srt, "w", encoding="utf-8") as f:
        i = 0
        while i < len(lines):
            if lines[i].strip().isdigit():
                f.write(lines[i])  # 序号
                f.write(lines[i+1])  # 时间轴
                text = lines[i+2].strip()
                translated = translator.translate(text)
                f.write(f"{translated}\n\n")
                i += 4
            else:
                i += 1
    return cn_srt

async def generate_speech(cn_srt, voice_id, rate=1.5):
    """生成配音语音
    rate: 语速倍率，范围0.5-3.0，默认1.5
    """
    audio_files = []
    tasks = []
    
    # 将倍率转换为百分比字符串
    rate_percent = f"{(rate - 1) * 100:+.0f}%"
    
    with open(cn_srt, "r", encoding="utf-8") as f:
        lines = f.readlines()
    
    i = 0
    while i < len(lines):
        if lines[i].strip().isdigit():
            text = lines[i+2].strip()
            audio_path = f"audio/speech_{i}.mp3"
            communicate = Communicate(text, voice_id, rate=rate_percent)
            tasks.append((communicate.save(audio_path), audio_path))
            i += 4
        else:
            i += 1
    
    # 并行处理所有TTS任务
    for task, audio_path in tasks:
        await task
        audio_files.append(audio_path)
    return audio_files

def merge_video_audio(video_path, audio_files, subtitles, progress_callback=None, original_volume=0.1):
    try:
        # 加载视频
        video = VideoFileClip(video_path)
        
        # 获取实际的视频持续时间（减去一小段以避免末尾问题）
        actual_duration = video.duration - 0.1  # 减去0.1秒
        video = video.subclip(0, actual_duration)
        
        # 获取原始音频并降低音量到10%
        if video.audio is not None:
            original_audio = video.audio.volumex(original_volume)
        else:
            original_audio = None
        
        # 加载音频文件
        audio_clips = []
        with open(subtitles, "r", encoding="utf-8") as f:
            lines = f.readlines()
        
        i = 0
        while i < len(lines):
            if lines[i].strip().isdigit():
                # 解析时间轴
                times = lines[i+1].strip().split(" --> ")
                start = parse_timestamp(times[0])
                end = parse_timestamp(times[1])
                
                # 加载对应的音频
                audio = AudioFileClip(audio_files[len(audio_clips)])
                # 设置音频的开始时间
                audio = audio.set_start(start)
                audio_clips.append(audio)
                
                i += 4
            else:
                i += 1
        
        # 合并所有音频，包括原始音频
        if original_audio is not None:
            audio_clips.insert(0, original_audio)  # 将原始音频添加到列表开头
        
        final_audio = CompositeAudioClip(audio_clips)
        
        # 创建最终视频
        final_video = video.set_audio(final_audio)
        
        # 设置输出路径
        output_path = os.path.join("output", "final_video.mp4")
        
        # 导出视频
        final_video.write_videofile(
            output_path,
            codec='libx264',
            audio_codec='aac',
            fps=video.fps,
            audio_bitrate="192k",
            bitrate="4000k",
            threads=4,
            preset='medium'
        )
        
        # 清理
        video.close()
        if original_audio is not None:
            original_audio.close()
        final_video.close()
        for clip in audio_clips:
            if clip != original_audio:  # 避免重复关闭原始音频
                clip.close()
            
        return output_path
        
    except Exception as e:
        logger.error(f"合并视频音频失败: {e}")
        raise Exception(f"合并视频音频失败: {str(e)}")

def format_timestamp(seconds):
    hours = int(seconds // 3600)
    minutes = int((seconds % 3600) // 60)
    seconds = seconds % 60
    return f"{hours:02d}:{minutes:02d}:{seconds:06.3f}".replace(".", ",")

def validate_youtube_url(url):
    if not url:
        return None
    if not any(x in url for x in ["youtube.com", "youtu.be", "youtube", "youtu"]):
        raise gr.Error("请输入有效的YouTube链接，例如: https://www.youtube.com/watch?v=xxxxx")
    return url

def parse_timestamp(timestamp):
    """将SRT时间戳转换为秒"""
    hours, minutes, seconds = timestamp.replace(",", ".").split(":")
    return float(hours) * 3600 + float(minutes) * 60 + float(seconds)

def add_log(logs, message):
    """添加日志到标签"""
    if not logs:
        return message
    return logs + "\n" + message

def generate_and_translate_subtitles(video_input, youtube_url, format_id=None, cookies=None):
    """生成并翻译字幕"""
    try:
        if youtube_url:
            logger.info("正在下载YouTube视频...")
            youtube_url = validate_youtube_url(youtube_url)
            video_path = download_youtube(youtube_url, 
                                      format_id.split(':')[0] if format_id else None,
                                      cookies if cookies else None)
        else:
            video_path = video_input
            logger.info("正在处理上传的视频...")
        
        logger.info("正在识别语音...")
        en_srt = generate_subtitles(video_path)
        
        logger.info("正在翻译字幕...")
        cn_srt = translate_subtitles(en_srt)
        
        logger.info("字幕生成完成!")
        # 更新预览内容
        en_content = load_srt_content(en_srt)
        cn_content = load_srt_content(cn_srt)
        all_files = get_all_files()  # 获取所有文件
        return en_srt, cn_srt, video_path, en_content, cn_content, all_files
    except Exception as e:
        logger.error(f"生成字幕失败: {e}")
        raise gr.Error(str(e))

def process_video(video_input, youtube_url, format_id=None, cookies=None, cn_srt=None, voice_name=None, rate=1.5):
    try:
        if youtube_url:
            logger.info("正在下载YouTube视频...")
            youtube_url = validate_youtube_url(youtube_url)
            video_path = download_youtube(youtube_url, 
                                      format_id.split(':')[0] if format_id else None,
                                      cookies if cookies else None)
        elif video_input:
            video_path = video_input
            logger.info("正在处理上传的视频...")
        else:
            raise gr.Error("请上传视频文件或提供YouTube链接")
        
        # 如果上传了中文字幕，使用上传的字幕文件路径
        if cn_srt and hasattr(cn_srt, 'name'):
            cn_srt_path = cn_srt.name
            en_srt = None
            logger.info("使用上传的中文字幕...")
        else:
            logger.info("正在识别语音...")
            en_srt = generate_subtitles(video_path)
            
            logger.info("正在翻译字幕...")
            cn_srt_path = translate_subtitles(en_srt)
        
        logger.info("正在生成配音...")
        voice_id = next(k for k, v in CHINESE_VOICES.items() if v == voice_name)
        audio_files = asyncio.run(generate_speech(cn_srt_path, voice_id, rate))
        
        logger.info("正在合成视频...")
        output_video = merge_video_audio(video_path, audio_files, cn_srt_path)
        logger.info("处理完成!")
        
        all_files = get_all_files()
        return en_srt, cn_srt_path, all_files, video_path, output_video
    except Exception as e:
        logger.error(f"处理视频失败: {e}")
        raise gr.Error(str(e))

def load_srt_content(srt_file):
    """加载字幕文件内容"""
    if not srt_file:
        return ""
    with open(srt_file, "r", encoding="utf-8") as f:
        return f.read()

def save_srt_content(content, file_path):
    """保存字幕内容到文件"""
    with open(file_path, "w", encoding="utf-8") as f:
        f.write(content)
    return file_path

def apply_edit(cn_content, video_path, en_srt, voice_name, original_video, rate=1.5):
    """应用字幕编辑并继续处理"""
    if not cn_content:
        raise gr.Error("请先编辑字幕")
    
    # 检查视频来源
    if video_path:
        actual_video_path = video_path
    elif original_video:
        actual_video_path = original_video
    else:
        raise gr.Error("请先上传视频")
    
    try:
        # 保存修改后的字幕
        edited_srt = "subtitles/chinese_edited.srt"
        save_srt_content(cn_content, edited_srt)
        
        logger.info("字幕修改已保存，继续处理...")
        
        # 继续处理配音和视频合成
        logger.info("正在生成配音...")
        voice_id = next(k for k, v in CHINESE_VOICES.items() if v == voice_name)
        audio_files = asyncio.run(generate_speech(edited_srt, voice_id, rate))
        
        logger.info("正在合成视频...")
        output_video = merge_video_audio(actual_video_path, audio_files, edited_srt)
        
        logger.info("处理完成!")
        all_files = get_all_files()  # 获取所有文件
        return edited_srt, all_files, output_video
    except Exception as e:
        logger.error(f"处理失败: {e}")
        raise gr.Error(str(e))

def preview_uploaded_srt(file):
    """预览上传的字幕文件"""
    if file is None:
        return None
    try:
        return load_srt_content(file.name)
    except Exception as e:
        logger.error(f"预览字幕失败: {e}")
        raise gr.Error(f"预览字幕失败: {str(e)}")

def get_all_files():
    """获取所有生成的文件，并添加类型标识"""
    all_files = []
    
    # 获取上传的视频文件
    if os.path.exists("uploads"):
        for f in os.listdir("uploads"):
            file_path = os.path.join("uploads", f)
            if os.path.exists(file_path):  # 检查原始文件是否存在
                all_files.append(file_path)
    
    # 获取字幕文件
    if os.path.exists("subtitles"):
        for f in os.listdir("subtitles"):
            file_path = os.path.join("subtitles", f)
            if os.path.exists(file_path):  # 检查原始文件是否存在
                if "english" in f:
                    display_name = "[英文字幕] " + f
                else:
                    display_name = "[中文字幕] " + f
                all_files.append({
                    "name": display_name,
                    "path": file_path
                })
    
    # 获取音频文件
    if os.path.exists("audio"):
        for f in os.listdir("audio"):
            file_path = os.path.join("audio", f)
            if os.path.exists(file_path):  # 检查原始文件是否存在
                all_files.append({
                    "name": "[配音文件] " + f,
                    "path": file_path
                })
    
    # 获取输出文件
    if os.path.exists("output"):
        for f in os.listdir("output"):
            file_path = os.path.join("output", f)
            if os.path.exists(file_path):  # 检查原始文件是否存在
                all_files.append({
                    "name": "[配音视频] " + f,
                    "path": file_path
                })
    
    # 返回文件列表
    return [f["path"] if isinstance(f, dict) else f for f in all_files]

async def generate_preview_speech(voice_id, rate=1.5):
    """生成试听音频"""
    try:
        preview_text = "这是一段试听音频，用于预览配音效果。"
        audio_path = "audio/preview_speech.mp3"
        
        # 将倍率转换为百分比字符串
        rate_percent = f"{(rate - 1) * 100:+.0f}%"
        
        communicate = Communicate(preview_text, voice_id, rate=rate_percent)
        await communicate.save(audio_path)
        
        return audio_path
    except Exception as e:
        logger.error(f"生成试听音频失败: {e}")
        raise gr.Error(f"生成试听音频失败: {str(e)}")

def preview_voice(voice_name, rate):
    """试听选中的配音声音"""
    try:
        voice_id = next(k for k, v in CHINESE_VOICES.items() if v == voice_name)
        audio_path = asyncio.run(generate_preview_speech(voice_id, rate))
        return audio_path
    except Exception as e:
        logger.error(f"试听失败: {e}")
        raise gr.Error(str(e))

# Gradio界面
with gr.Blocks(css="""
    .single-line-input textarea {
        height: 2.5em !important;
        min-height: 2.5em !important;
        max-height: 2.5em !important;
        overflow-y: hidden !important;
    }
""") as app:
    gr.Markdown("# 视频配音助手")
    
    with gr.Row():
        # 视频输入和YouTube下载区域
        with gr.Column(scale=2):
            # YouTube下载区域
            with gr.Row():
                youtube_url = gr.Textbox(label="或输入YouTube链接")
                format_btn = gr.Button("获取可用格式列表", scale=0)
            
            with gr.Row():
                format_input = gr.Textbox(
                    label="输入格式ID", 
                    placeholder="例如: 137+140",
                    value="137+140",
                    scale=1
                )
                cookies_input = gr.Textbox(
                    label="Cookies(可选)",
                    placeholder="Netscape格式",
                    lines=6,
                    max_lines=10,
                    show_label=True,
                    container=True,
                    scale=2,
                )
            
            format_info = gr.Textbox(
                label="可用格式列表", 
                interactive=False,
                lines=6
            )
            
            # 配音设置区域
            with gr.Row():
                with gr.Column(scale=3):
                    voice_list = gr.Dropdown(
                        label="选择配音声音",
                        choices=list(CHINESE_VOICES.values()),
                        value="曉臻 - 女声 (台湾国语)",
                        interactive=True
                    )
                    voice_rate = gr.Slider(
                        label="语速调整",
                        minimum=0.5,
                        maximum=3.0,
                        value=1.5,
                        step=0.1,
                        interactive=True
                    )
                with gr.Column(scale=1):
                    preview_btn = gr.Button("试听")
            
            # 试听音频播放器
            preview_audio = gr.Audio(
                label="试听音频",
                visible=True,
                interactive=False
            )
            
            with gr.Row():
                generate_btn = gr.Button("生成字幕并编辑", scale=1)
                process_btn = gr.Button("直接开始处理", scale=1)
        
        # 上传区域
        with gr.Column(scale=1):
            video_input = gr.Video(label="上传视频文件")
            cn_srt_upload = gr.File(label="上传中文字幕", file_types=[".srt"])
    
    # 字幕预览区域
    with gr.Row():
        with gr.Column(scale=1):
            en_preview = gr.TextArea(
                label="英文字幕预览", 
                interactive=False,
                lines=10
            )
        with gr.Column(scale=1):
            cn_preview = gr.TextArea(
                label="中文字幕预览", 
                interactive=True,
                lines=10
            )
    
    # 编辑按钮
    with gr.Row():
        edit_btn = gr.Button("应用字幕修改")
    
    # 隐藏的字幕文件组件
    output_en_srt = gr.File(label="英文字幕", file_types=[".srt"], visible=False)
    output_cn_srt = gr.File(label="中文字幕", file_types=[".srt"], visible=False)
    
    # 输出区域
    with gr.Row():
        with gr.Column(scale=1):
            original_video = gr.Video(label="原始视频")
            all_files_output = gr.Files(label="所有文件")
        with gr.Column(scale=1):
            video_output = gr.Video(label="最终视频")
    
    generate_btn.click(
        fn=generate_and_translate_subtitles,
        inputs=[video_input, youtube_url, format_input, cookies_input],
        outputs=[output_en_srt, output_cn_srt, original_video, en_preview, cn_preview, all_files_output]
    )
    
    process_btn.click(
        fn=process_video,
        inputs=[video_input, youtube_url, format_input, cookies_input, cn_srt_upload, voice_list, voice_rate],
        outputs=[output_en_srt, output_cn_srt, all_files_output, original_video, video_output]
    )
    
    # 添加字幕预览更新事件
    def update_preview(en_srt_file, cn_srt_file):
        """更新字幕预览"""
        en_content = load_srt_content(en_srt_file) if en_srt_file else ""
        cn_content = load_srt_content(cn_srt_file) if cn_srt_file else ""
        return en_content, cn_content
    
    # 字幕文件变化时更新预览
    output_en_srt.change(
        fn=update_preview,
        inputs=[output_en_srt, output_cn_srt],
        outputs=[en_preview, cn_preview]
    )
    
    output_cn_srt.change(
        fn=update_preview,
        inputs=[output_en_srt, output_cn_srt],
        outputs=[en_preview, cn_preview]
    )
    
    # 编辑按钮点击事件
    edit_btn.click(
        fn=apply_edit,
        inputs=[
            cn_preview,
            video_input,
            output_en_srt,
            voice_list,
            original_video,
            voice_rate
        ],
        outputs=[
            output_cn_srt,
            all_files_output,
            video_output
        ]
    )
    
    # 添加中文字幕上传预览功能
    cn_srt_upload.change(
        fn=preview_uploaded_srt,
        inputs=[cn_srt_upload],
        outputs=[cn_preview]
    )

    # 添加格式列表更新事件
    format_btn.click(
        fn=get_youtube_formats,
        inputs=[youtube_url, cookies_input],
        outputs=[format_info]
    )

    # 添加试听按钮点击事件
    preview_btn.click(
        fn=preview_voice,
        inputs=[voice_list, voice_rate],
        outputs=[preview_audio]
    )

app.launch(server_name="0.0.0.0", server_port=7860)