Loper · Broadcast, IPTV & streaming

Open .ffpreset files on your Mac.

.ffpreset .avpreset

Encoder presets as key=value pairs.

Loper is a free, minimal editor for macOS that opens FFmpeg presets 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.

x264-broadcast.ffpreset opened in Loper: FFmpeg presets with color-coded INI / Properties
Show the file as text
vcodec=libx264preset=slowprofile:v=highlevel=4.1b:v=12Mmaxrate=15Mbufsize=24Mg=50

How to open .ffpreset files

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