FFmpeg

Best by test. The original quasi-legal, hyperbroad, coldly efficient library for decoding, encoding, and munging digital media.

Build options

• --enable-gpl forces creation of GPL-only modules (including e.g. delogo). the resulting object is GPL-licensed.
• --enable-nvenc forces use of NVENC (requires nv-codec-headers)

Recipes

Remove audio

ffmpeg -i INPUT -vcodec copy -an OUTPUT

Extract N seconds starting at time T

ffmpeg -i INPUT -c copy -ss T -t N OUTPUT

• T can be either a seconds count, or a timestamp i.e. 01:00:20.

Combine input files

ffmpeg -f concat -safe 0 -i INPUT -c copy OUTPUT

• INPUT ought be a newline-delimited set of files, each prefaced with "file ".