Free Fps. Video FPS Converter

Free FPS is an open‑source desktop app and scripts to change a video file frame rate (FPS) using FFmpeg.
Unlike video editors, it does not add effects or alter content - it only adjusts playback speed and, if needed, re-encodes audio as well.
Useful if you work with multiple videos shot at different frame rates that cannot be combined or edited without interpolation or frame loss. Also doubles as a fast video compressor: keep the original FPS and raise compression (e.g., higher CRF or lower bitrate) to reduce file size.
What it does:
Changes video FPS via FFmpeg.
Keeps or re‑encodes audio if requested.
No effects, no content edits.
Writes results to a separate output folder by default.
Also doubles as a fast video compressor: keep the original FPS and raise compression (e.g., higher CRF or lower bitrate) to reduce file size.
Important:
The program is intended for users who understand what FPS conversion does. Changing the frame rate affects the speed and duration of the video