handbrake

Open-source video transcoder for converting video files

brewmacoslinux

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Open-source video transcoder available for Linux, Mac, and Windows

HandBrakeCLI

Convert MP4 to H.264 with default settings$ HandBrakeCLI -i input.mp4 -o output.mp4

Transcode to H.265 with quality preset$ HandBrakeCLI -i input.mkv -o output.mp4 -e libx265 -q 22

Extract and convert specific subtitle track$ HandBrakeCLI -i input.mkv -o output.mp4 -s 1 --subtitle-burned