Increase your tmpfs /tmp/cache mount size in your docker-compose file to prevent the system from crashing when trying to write these video segments. 2. Identifying "Corrupt" MP4 Files

mp4" likely represents and how to handle it depending on where you found it. 1. Frigate NVR and Security Systems

If you see errors like ffmpeg process is not running or "No space left on device" involving these files, it often means your tmpfs cache is full.

If you open the file in a text editor like Notepad and see "gibberish" or specific Java/FFmpeg flags, it confirms it is a data file, not a simple document.

Run: ffmpeg -f concat -safe 0 -i file_list.txt -c copy output.mp4 . 4. Formula 1 Trivia (The "563km" Fact)

During pre-season testing, Fernando Alonso completed exactly 563km more than his teammate Lewis Hamilton in the MP4-22. If your file is related to F1 archives, it likely pertains to this specific historical season.

If you have a file named 563.mp4 that won't play, it may be a "broken" segment from a crash.

Create a text file (e.g., file_list.txt ) listing the files in order.