download: https://ffmpeg.zeranoe.com/builds/

ffmpeg -i a.mp4 -ss 00:01:00 -to 00:01:10 -c:v copy -c:a copy out.mkv

ffmpeg -y -ss a.mp4 -t 10 -I a.mp4 -c:v libx264 -preset superfast -c:a copy

ffmpeg -y -i a.mp4 -ss 00:05:00 -t 10 -codec copy out.mkv

ffmpeg -ss 00:06:00 -i a.mp4 -vcodec copy -acodec copy -t 00:01:00 output_file1.mp4

ϲhttps://blog.csdn.net/doublefi123/article/details/47276739

ffmpeg -i "concat:output_file1.mp4|output_file.mp4" -c copy -bsf:a aac_adtstoasc -movflags +faststart 123.mp4

ffmpeg -y -f concat -safe 0 -i filelist.txt -c copy o11.mp4
ffmpeg -f concat -i filelist.txt -c copy output_set.mp4

ϲhttps://blog.csdn.net/u011757360/article/details/20491055
--ok
ffmpeg.exe Ci output_file1.mp4 Cvcodec copy Cacodec copy Cvbsf h264_mp4toannexb 1.ts
ffmpeg.exe Ci output_file.mp4 Cvcodec copy Cacodec copy Cvbsf h264_mp4toannexb 2.ts
copy/b "1.ts"+"2.ts" /y "combine.ts"
ffmpeg.exe Ci combine.ts Cacodec copy Cvcodec copy Cabsf aac_adtstoasc combine.mp4

תmp3
ffmpeg -i combine.mp4 12345.MP3