ffslice

A CLI utility to easily extract segments of audio and video files, without re-encoding.

Basically like substr() for MPEG-encoded files.

Usage

ffslice file.mp4 start [end]

You can specify times using H:M:S format, including relative start/end points with a leading plus (+) or minus (-).

For example:

fflsice file.mp4 -30 means "begin at 30 seconds from the end of the file"
ffslice file.mp4 1:50 +42 means "begin at 1m 50s, then end 42 seconds after that"
ffslice file.mp4 9:50 1:55:32 means "start at 9m 50s, then end at 1h 55m 32s"

Requirements

This script is written in pure bash and it requires ffmpeg.

Example Use Cases

You have a long live show recording and want to extract one song to send to a friend
You want to extract a funny scene from your favorite show

Known Bugs

I use this script frequently to extract segments from MixCloud mixes and YouTube videos. However, I am certain there are a few edge-case bugs with the start/end time logic. Feel free to fix it!

License

MIT.

jchook / ffslice