To create a cover (thumbnail or metadata image) for your video files, or to convert them between MKV and MP4 formats, you can use several free and professional tools. Adding Cover Art to MKV and MP4 Files
: If you use OBS Studio , you can use the "Remux Recordings" feature under the File menu. This is a very fast process that changes the file container without re-encoding the video quality.
If you need to embed a specific image as the cover for your file, the following tools are highly recommended:
: Go to Media > Convert / Save , add your MKV, and select an MP4 profile (e.g., Video - H.264 + MP3) to convert it.
If you find that your player or editing software (like Adobe Premiere) does not support MKV, you can quickly convert it to MP4 using these methods:
: You can use the built-in "Media Information" tool (Ctrl+I) to add or change artwork for various video formats.
