: A specialized tool for MKV files that allows you to attach images directly as cover art. Note that for these to appear in Windows Explorer, you may need a codec pack like the K-Lite Codec Pack.
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 Pasar 00008 Mkv mp4
If you need to embed a specific image as the cover for your file, the following tools are highly recommended: : A specialized tool for MKV files that