: Previously, users had to record in .mkv format (which is naturally crash-safe) and then "remux" it into .mp4 for compatibility with editors. fMP4 eliminates this extra step.
: Some older video editors or media players may struggle to open fragmented files directly. 437.mp4
: Modern implementations, such as the OBS Hybrid MP4, support multiple video and audio tracks within a single file, which is useful for advanced broadcasting and debugging. Minor Caveats : Previously, users had to record in