命令行 ~~~ ffmpeg -i input.mp4 -r 10 -b:a 32k output.mp4 ~~~ 介紹 有的視頻，如一些視頻學習教程通常畫面都是不大變化的，和變動速度快的打斗視頻所需要的幀數完全不同，音質也不需要很高。可以降低fps和音頻碼率的方法大大壓縮文件大小，而清晰度不變！ 通常轉成.mp4，采用H.264視頻壓縮算法和AAC音頻壓縮算法，視頻幀率10fps，音頻碼率32k Additional options that might be worth considering is setting the Constant Rate Factor, which lowers the average bit rate, but retains better quality. Vary the CRF between around 18 and 24 — the lower, the higher the bitrate. ~~~ ffmpeg -i input.mp4 -vcodec libx264 -crf 20 output.mp4 ~~~