If you are an OBS user, the OBS Project Forum has extensive posts on "remuxing" recordings so they don't break if your computer crashes.
Adobe's Guide to MKV explains why people use MKV for archiving and MP4 for sharing. 9700.mkv.mp4
FastPix has a detailed 2026 comparison on when to use each container for streaming versus storage. If you are an OBS user, the OBS
This typically happens when a user re-saves an MKV file (a high-quality "container" that holds multiple audio/subtitle tracks) as an MP4 (a more widely compatible format) without removing the original extension. Key Resources for Video Conversion This typically happens when a user re-saves an
The specific filename doesn't point to a single viral meme or a specific "official" blog post. Instead, it looks like a technical byproduct of remuxing or converting a video file—likely a recording from OBS (Open Broadcaster Software) or a rip from a Blu-ray.
If you are looking for a "good blog post" on this topic, it is usually found in discussions about to make high-quality video files compatible with social media or mobile devices. Why you see "mkv.mp4"