ffmpeg -y -i input.ts -c:v libx264 -c:a copy -bsf:a aac_adtstoasc output.mp4说明下参数的意义-c:v 是指video编码-c:a 是指audio编码-bsf bitstream filterffmpeg -y -i <in file> -vcodec copy -acodec copy -vbsf h264_mp4toannexb <output file>ffmpeg -i <in file> -f mp3 -vn <out file.mp3>-i input file-f format -vn video not