loper

Loper · Broadcast, IPTV & streaming

Open .ffconcat files on your Mac.

.ffconcat

The list FFmpeg's concat demuxer joins: files, in and out points and durations.

Loper is a free, minimal editor for macOS that opens FFmpeg concat list (.ffconcat) instantly and colors every part of the file, so you find the value you need at a glance and can fix it right there. No IDE, no project to load, no gray wall of text.

Download Loper – freeAll formats
reel.ffconcat opened in Loper: FFmpeg concat list (.ffconcat) with color-coded Shell
Show the file as text
ffconcat version 1.0# Festival reelfile 'Slate.mov'duration 5file 'A001C003.mov'inpoint 2.0outpoint 8.0file 'A001C004.mov'file 'EndCredits.mov'

How to open .ffconcat files

  1. Download Loper (free, Apple silicon, signed and notarized) and move it to Applications.
  2. Double-click your .ffconcat file, drag it onto the Loper window, or right-click it and choose Open With › Loper.
  3. Want every .ffconcat file to open in Loper? Choose Loper › Make Loper the Default Editor….

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