以这种方式使用命令是很有用的。
ffmpeg -i kata.mp4 -filter_complex [0:v]split=4[s0][s1][s2][s3];
[s0]scale=hd720[v0];[s1]scale=hd480[v1];[s2]scale=nhd[v2];[s3]scale=cga[v3]
-map [v0] -map [v1] -map [v2] -map [v3] -map 0:a -c:v libx264 -c:a aac -f tee -g 48 -threads 0
"[select='v\:0,a':f=hls:hls_list_size=0]../video/720p/out.m3u8|
[select='v\:1,a':f=hls:hls_list_size=0]../video/480p/out.m3u8|
[select='v\:2,a':f=hls:hls_list_size=0]../video/360p/out.m3u8|
[select='v\:3,a':f=hls:hls_list_size=0]../video/200p/out.m3u8"