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ffmpeg

ffmpeg -i video.mp4 -i audio.wav -c:v copy -c:a aac -map 0:v:0 -map 0:a:0 output.mp4
ffmpeg -i input.m2ts -c:v h264_qsv -b:v 2000k -r 30 -s 1280x720 output.mp4
$ ffmpeg -i input.mp4 -map_metadata 0 -c:v libx264 -crf 23 -c:a copy output.mp4