Lossless Frame Rate Converter

Lossless Frame Rate Converter

lfrc icon

Change the frame rate/duration of quicktime movies losslessly without using extra disk space or modifying the original. Saves reference or self contained movies.

WARNING: This software may not work properly for all types of Quicktime movies.

This program changes the header information of a quicktime movie so that it will play at a different speed and fps. The result is saved as a reference movie (so no quality is lost, no disk space is taken up) or as a separate self-contained movie file, and the original movie file is not in any way altered. The only caveat is that a reference movie needs to have the original around to read data from.

What's New version 2:

  • Batch processing!
  • Indicator for when the software is working on saving a movie
lfrc screenshot


Current Version 2.0.1:

Standalone Mac Application (16 MB)

Max Patch version (127 KB) - for Mac or Windows users of Max/MSP/Jitter, or you can use the free Max Runtime for Mac or Windows

Download old Versions


Standalone app should run on MacOS X 10.5 or later (version 1.0 may work on OS X 10.4). Max patch version can be used on Windows or Mac with the free Max Runtime program from Cycling '74. Windows users will also need to install the latest version of Quicktime if you have not already.

Version History

  • 2.0.1
    • Fix bug in Batch processing. Now files other than the first in the folder should be properly converted.
  • 2.0
    • Batch processing!
    • Indicator for when the software is working on saving a movie
  • 1.2
    • Ability to save either as reference or self contained movie
  • 1.1
    • "Open Movie" button now works the same a Drag and Drop (ie properly).
    • New, more complete set of frame rate presets.
    • Input movie's file name is now the default name in the save dialog.
    • Menus now work.
    • Tested and works with GH2 footage imported via Final Cut Pro X
  • 1.0
    • Initial Release

developed by Arvid Tomayko

No warranty, no gurantees, etc. Drop me a line by email if you think this software is cool or useful.