MusicPlus
MusicPlus based MediaExtractor, MediaMuxer, and MediaCodec and other tools to achieve extraction of audio video, and then after the other audio mix, then a new audio to synthesize new video. If you are interested to convert between audio formats, you can also find the relevant code in them.
Install / Use
/learn @YeDaxia/MusicPlusREADME
音频处理另外一个更完整的项目：https://github.com/YeDaxia/AndroidAudioMixer
MusicPlus
MusicPlus基于MediaExtractor、MediaMuxer、和MediaCodec等工具类，来实现了对视频中音频的提取，然后和其他音频进行混音后，再用新的音频来合成新的视频。如果你对于音频格式之间的转换感兴趣，比如WAV转ACC格式，也可以在其中找到相关的代码。
Note
- 由于视频录制的时候会把播放的背景音乐一起录进去，因此在录制包含视频音轨的视频时，记得带上耳机。
- 更多介绍: http://www.darcye.com/article/00301860
截图
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