[{"data":1,"prerenderedAt":290},["ShallowReactive",2],{"blog-audio-extract-complete-guide":3},{"id":4,"title":5,"author":6,"body":7,"category":271,"description":272,"extension":273,"image":274,"keywords":275,"meta":282,"navigation":283,"path":284,"publishedAt":285,"readingTime":286,"seo":287,"stem":288,"updatedAt":285,"__hash__":289},"blog\u002Fblog\u002Faudio-extract-complete-guide.md","视频提取音频完全指南：网课、直播、视频里的声音一键提取","91AI工具团队",{"type":8,"value":9,"toc":255},"minimark",[10,19,22,29,33,36,64,69,72,75,80,83,87,90,94,97,101,104,107,174,177,192,195,201,207,213,219,225,228],[11,12,13,14,18],"p",{},"你有没有这样的情况：报名了网课，视频太大手机存不下，只想留着音频路上听；刷到一个好听的MV，想单独收藏里面的歌；公司会议录屏一个小时，想转成录音发给没时间看视频的同事。",[15,16,17],"strong",{},"视频文件大、播放重","，而真正有用的往往只是里面那一段声音。",[11,20,21],{},"视频提取音频完全指南，围绕这些真实痛点：怎么从视频里把声音单独提出来，变成MP3、AAC等轻量音频文件，让音频能单独播放、单独分享、单独存档，还更省空间。全程在线，不用装剪辑软件。",[11,23,24],{},[25,26],"img",{"alt":27,"src":28},"视频提取音频在线工具界面","\u002Fimages\u002Ftools\u002Faudio-extract.png",[30,31,32],"h2",{"id":32},"在线视频提取音频工具",[11,34,35],{},"91AI工具的视频提取音频功能，就五步：",[37,38,39,46,52,58],"ol",{},[40,41,42,45],"li",{},[15,43,44],{},"上传视频","：支持MP4、MKV、MOV、AVI、WMV、FLV、WebM等常见格式，可多选",[40,47,48,51],{},[15,49,50],{},"选择输出格式","：MP3、AAC、WAV、FLAC、OGG、M4A、Opus、WMA任选",[40,53,54,57],{},[15,55,56],{},"点击开始提取","：优先快速复制模式，速度接近实时播放的5-10倍",[40,59,60,63],{},[15,61,62],{},"下载音频","：提取完成后一键保存",[11,65,66],{},[25,67],{"alt":68,"src":28},"视频提取音频步骤",[11,70,71],{},"整个处理在浏览器本地完成，视频不上传服务器，隐私更安全。",[30,73,74],{"id":74},"应用场景与痛点解决",[76,77,79],"h3",{"id":78},"_1-网课视频转音频路上听","1. 网课视频转音频路上听",[11,81,82],{},"网课视频动辄几十上百MB，转成MP3后只有几MB，通勤路上、睡前戴着耳机就能复习，还能节省手机空间。",[76,84,86],{"id":85},"_2-视频会议录屏转录音","2. 视频会议\u002F录屏转录音",[11,88,89],{},"把公司培训录屏、会议录像转成音频发给同事，相比几十分钟的视频，音频文件小得多，转发快、打开快，配合语音转文字工具还能直接生成会议纪要。",[76,91,93],{"id":92},"_3-音乐会视频收藏音频","3. 音乐会视频收藏音频",[11,95,96],{},"演唱会、MV、Live现场只有视频版，转成WAV或FLAC无损格式就能当音乐收藏，音质与视频原声一致。",[76,98,100],{"id":99},"_4-视频配乐音效素材复用","4. 视频配乐\u002F音效素材复用",[11,102,103],{},"剪辑视频时想用某个视频里的BGM或音效，先把音频提取出来再用到自己的项目里，比录屏采集干净得多。",[30,105,106],{"id":106},"格式怎么选",[108,109,110,126],"table",{},[111,112,113],"thead",{},[114,115,116,120,123],"tr",{},[117,118,119],"th",{},"用途",[117,121,122],{},"推荐格式",[117,124,125],{},"说明",[127,128,129,141,152,163],"tbody",{},[114,130,131,135,138],{},[132,133,134],"td",{},"通用播放\u002F分享",[132,136,137],{},"MP3（192kbps）",[132,139,140],{},"兼容性最好，音质与体积均衡",[114,142,143,146,149],{},[132,144,145],{},"苹果设备",[132,147,148],{},"AAC",[132,150,151],{},"同等码率音质优于MP3",[114,153,154,157,160],{},[132,155,156],{},"音频编辑\u002F制作",[132,158,159],{},"WAV",[132,161,162],{},"无损、文件大，适合后期",[114,164,165,168,171],{},[132,166,167],{},"无损收藏",[132,169,170],{},"FLAC",[132,172,173],{},"保留原始音质，高保真",[30,175,176],{"id":176},"注意事项",[178,179,180,183,186,189],"ul",{},[40,181,182],{},"提取的音频质量取决于视频原声，视频音质差时输出格式再高也救不回来",[40,184,185],{},"本工具提取完整音轨；只要某段音频建议先用视频裁剪工具切好再提取",[40,187,188],{},"涉及版权或隐私的音频，请确认你有使用权",[40,190,191],{},"提取音频用于语音转文字，建议输出WAV供识别效果更好",[30,193,194],{"id":194},"常见问题",[11,196,197,200],{},[15,198,199],{},"1. 提取速度快吗？","\n很快。快速复制模式下速度接近实时播放的5-10倍，一部十分钟的视频通常十几秒就能提取完。",[11,202,203,206],{},[15,204,205],{},"2. 提取出的音频音质和视频一致吗？","\n一致。音频直接从视频音轨提取，未经二次压缩的话音质等同视频原声。",[11,208,209,212],{},[15,210,211],{},"3. 可以只提取视频里的某段音频吗？","\n建议先复制一份视频，用视频裁剪工具截出目标片段，再对片段提取音频。",[11,214,215,218],{},[15,216,217],{},"4. 手机浏览器能操作吗？","\n能。91AI工具在手机浏览器直接可用，上传、提取、下载全在本地完成。",[11,220,221,224],{},[15,222,223],{},"5. 文件会留在服务器吗？","\n不会，纯前端处理，视频和音频都不上传服务器，处理完即结束。",[30,226,227],{"id":227},"扩展阅读",[178,229,230,237,243,249],{},[40,231,232],{},[233,234,236],"a",{"href":235},"\u002Fhelp\u002Faudio-extract","视频提取音频使用指南",[40,238,239],{},[233,240,242],{"href":241},"\u002Fblog\u002Faudio-convert-complete-guide","音频格式转换：各种音频互转",[40,244,245],{},[233,246,248],{"href":247},"\u002Fhelp\u002Fvideo-cut-guide","视频裁剪：先切片段再提取",[40,250,251],{},[233,252,254],{"href":253},"\u002Fblog\u002Fvideo-compress-complete-guide","视频压缩：给手机瘦身",{"title":256,"searchDepth":257,"depth":257,"links":258},"",2,[259,260,267,268,269,270],{"id":32,"depth":257,"text":32},{"id":74,"depth":257,"text":74,"children":261},[262,264,265,266],{"id":78,"depth":263,"text":79},3,{"id":85,"depth":263,"text":86},{"id":92,"depth":263,"text":93},{"id":99,"depth":263,"text":100},{"id":106,"depth":257,"text":106},{"id":176,"depth":257,"text":176},{"id":194,"depth":257,"text":194},{"id":227,"depth":257,"text":227},"media","看网课想听音频复习、刷到好听的歌只有视频版、录屏会议要转成录音、视频配乐想存下来用——视频提取音频完全指南在线从MP4 MKV MOV等视频中提取MP3 AAC WAV FLAC，解决视频太大占空间、音频没法单独播放、想转文字没音频的痛点，纯前端本地处理不传服务器保护隐私，附格式选择与常见问题，手机电脑随时用。","md","\u002Fog-image.png",[276,277,278,279,280,281],"视频提取音频","视频转MP3","网课提取音频","视频背景音乐提取","录屏转录音","在线提取音频",{},true,"\u002Fblog\u002Faudio-extract-complete-guide","2026-08-11",6,{"title":5,"description":272},"blog\u002Faudio-extract-complete-guide","rWq9uPcnq5KIgLOqTnPKhsFnht0Ph36ufqLr5u-tSwI",1786413757587]