ffmpeg # 使用x264/x265参数

• x264

ffmpeg -i input -c:v libx264 -preset slow -crf 22 -x264-params keyint=123:min-keyint=20 -c:a copy output.mkv

• x265

ffmpeg -i input -c:v libx265 -b:v 2600k -x265-params pass=2 -c:a aac -b:a 128k output.mp4

References:

https://trac.ffmpeg.org/wiki/Encode/H.264
https://trac.ffmpeg.org/wiki/Encode/H.265