Video Fixer Pro

Video Fixer Pro is a Python/PySide6 desktop utility for repairing or recovering damaged MP4, MOV, M4V, and 3GP files. It keeps the original file untouched and writes repaired files to a selected output folder.

Download: https://github.com/khalildim/videoFixer-Pro/releases/latest

Current Features

• PySide6 desktop GUI with repair, analysis, and settings pages
• English and German interface language support
• Optional CLI mode for backend testing
• FFprobe analysis for duration, streams, codecs, resolution, FPS, and missing moov detection
• Repair modes:
  • Auto repair
  • Remux
  • Faststart / moov relocation
  • Re-encode
  • Reference-video recovery with untrunc
  • Stream extraction and rebuild
• Worker-thread execution so long FFmpeg jobs do not freeze the UI
• Settings for FFmpeg, FFprobe, Untrunc, output folder, default mode, CRF, and preset
• On-screen repair log without saving extra log files beside the videos

Requirements

Install Python dependencies:

pip install -r requirements.txt

Install or configure these external tools:

• ffmpeg
• ffprobe
• untrunc for reference-video repair

The app checks configured paths first, then bundled binaries under app/assets/ffmpeg/, then the system PATH.

Run The GUI

python main.py

or:

python main.py --gui

Run From CLI

python main.py --input damaged.mp4 --output output --mode auto

Optional reference-video recovery:

python main.py --input damaged.mp4 --output output --reference healthy_reference.mp4 --mode untrunc

Available modes are:

auto
remux
faststart
reencode
untrunc
extract

Safety Notes

Video Fixer Pro never modifies the source video. Repair attempts create new output files such as:

video_repaired_remux.mp4
video_repaired_faststart.mp4
video_repaired_reencode.mp4
video_repaired_extracted.mp4

MP4 recovery cannot be guaranteed. If media data is missing, no tool can recreate it perfectly. Files missing the moov atom often need a healthy reference video recorded with the same device and settings.

License

Video Fixer Pro is freeware for personal and non-commercial use only. Commercial use, redistribution, republishing, resale, modified builds, or inclusion in another product requires prior written permission. See LICENSE.

Bundled third-party binaries have their own licenses. See THIRD_PARTY_NOTICES.md.