Vid_20221223_135347_155.mp4.mkv -

High-definition audio formats like DTS or Dolby Digital.

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

Standard video editors (like iMovie or some versions of Windows Photos) often struggle with MKV. You may need to convert it back to MP4 if you plan to edit the footage. User Perspectives High-definition audio formats like DTS or Dolby Digital