ffmpeg

created: 20220129 updated: 20220129 authors: alick97

convert audio

ffmpeg -i my.m4a -acodec mp3 -ac 2 -ab 192k my.mp3

video 压缩帧率

ffmpeg -i VID_20181222_204902.mp4 -b:v 2000k  VID_20181222_204902_1000k.mp4

• ffmpeg org link
• 使用gpu https://www.jianshu.com/p/59da3d350488

  ffmpeg -hwaccel cuvid -c:v h264_cuvid -noautorotate -i src.mp4 -c:v h264_nvenc -b:v 1024k dest.mp4
  

  512k -> 300m film 1024k -> 600m film