ffmpeg：从 mp3 中删除 lame replaygain 标签

Question

如果选项 --noreplaygain 未设置，lame 正在编写重播增益标签：

ffmpeg -i testgain_0.mp3
Input #0, mp3, from 'testgain_0.mp3':
Duration: 00:01:00.42, start: 0.025057, bitrate: 192 kb/s
Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
Metadata:
  encoder         : LAME3.99r
Side data:
  replaygain: track gain - -12.500000, track peak - unknown, album gain - unknown, album peak - unknown,

我可以使用 ffmpeg 删除 "Side data" 吗？在我尝试使用 map metadata 时，我无法访问此 "Side data" 以将其删除：-map 0:0 -map_metadata -1

Answer 1

如果您通过 MP4 往返它，它似乎会被删除。

ffmpeg -i testgain_0.mp3 -c copy testgain_0.mp4

ffmpeg -i testgain_0.mp4 -c copy nogain_0.mp3

或者使用管道进行单步法：

ffmpeg -i testgain_0.mp3 -c copy -f avi - | ffmpeg -i - -c copy nogain_0.mp3

ffmpeg：从 mp3 中删除 lame replaygain 标签

ffmpeg: remove lame replaygain tag from mp3

ffmpeg

lame

replaygain