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如何从MP4视频中提取音频?

在浏览器中将任何MP4视频转换为MP3音频格式。快速、免费且私密 — 无需服务器上传。

从视频中提取音频对于创建播客、从录音中提取音乐或将讲座转换为离线听力非常有用。

ConvertCraft 的视频到音频工具使用 WebAssembly 驱动的 FFmpeg 提取 MP4 文件中的音频跟踪,无需上传。

打开工具,选择你的MP4文件,选择MP3作为输出格式,然后点击“转换”。音频轨道将根据典型视频文件提取为秒数。

您可以调整输出质量(比特率),从64kbps到320kbps。对于口语内容,128kbps就足够了。对于音乐,256–320kbps是推荐的。

该工具支持MP4、WebM、MKV和AVI输入,并可输出到MP3、AAC、OGG、WAV和FLAC格式。

Frequently Asked Questions

转换MP4到MP3是否会损失质量?

如果原始视频包含AAC音频,转换成MP3时涉及重新编码,引入质量损失。对于无损提取,选择WAV或FLAC输出。

提取音频需要多长时间?

处理时间取决于文件大小和您的设备。一个5分钟视频通常在现代设备上在10-30秒内转换。

我可以从YouTube视频中提取音频吗?

ConvertCraft只能处理本地文件。您需要先将视频文件保存到您的设备上。