Remux when compatible: ffmpeg -i input.mp4 -c copy -map 0 -metadata title="..." output.mp4
đź’ˇ If you are a developer, stick to open-source repositories like yt-dlp on GitHub. It is transparent, widely vetted, and the gold standard for media extraction. To help you get the right setup, let me know: script download facebook video repack
There are several reasons why people might want to download Facebook videos: Remux when compatible: ffmpeg -i input