The .mp4.mkv suffix indicates it may have originally been an MP4 file that was later wrapped into an MKV container, or it was renamed/converted using automated software.
Multiple languages or "forced" subtitles for specific scenes can be embedded directly into the file rather than kept as separate .srt files. 💻 Compatibility & Playback VID_20221223_135347_155.mp4.mkv
This file is in a "power user" format. It is and preserving the highest possible quality of your December 2022 memory, but it is less convenient for quick sharing via social media or text compared to a standard MP4. Recommended Tooling: VID_20221223_135347_155.mp4.mkv