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 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. Pasar 00008 Mkv mp4
: Despite its name, this tool is excellent for adding custom thumbnails or cover art to MP4 files on Windows. If you need to embed a specific image