Furthermore, it supports online database lookups from, e.g., Discogs, MusicBrainz or freedb, allowing you to automatically gather proper tags and download cover art for your music library.
You can rename files based on the tag information, replace characters or words in tags and filenames, import/export tag information, create playlists and more.
https://www.mp3tag.de
MediaInfo is a convenient unified display of the most relevant technical and tag data for video and audio files.
https://mediaarea.net/en/MediaInfo
MKVToolNix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows.
https://mkvtoolnix.download/index.html
XMedia Recode is a free All-In-One audio converter, video converter and video editor.
XMedia Recode supports hardware accelerated video conversion from AMD, Nvidia and Intel.
XMedia Recode can convert almost all known audio and video formats, including AAC, AC3,Blu-ray, DVD, FLAC, H.264, H.265, Matroska (MKV), MP4, WebM, WMA and WMV.
XMedia Recode can only convert unprotected Blu-rays/DVDs.
https://www.xmedia-recode.de/en/
MakeMKV is your one-click solution to convert video that you own into free and patents-unencumbered format that can be played everywhere. MakeMKV is a format converter, otherwise called “transcoder”. It converts the video clips from proprietary (and usually encrypted) disc into a set of MKV files, preserving most information but not changing it in any way. The MKV format can store multiple video/audio tracks with all meta-information and preserve chapters. There are many players that can play MKV files nearly on all platforms, and there are tools to convert MKV files to many formats, including DVD and Blu-ray discs.
https://www.makemkv.com
HandBrake is an open-source video transcoder available for Linux, Mac, and Windows. Everyone can use HandBrake to make videos for free.
HandBrake takes videos you already have and makes new ones that work on your mobile phone, tablet, TV media player, game console, computer, or web browser—nearly anything that supports modern video formats.
HandBrake works with most common video files and formats, including ones created by consumer and professional video cameras, mobile devices such as phones and tablets, game and computer screen recordings, and DVD and Blu-ray discs. HandBrake leverages tools such as FFmpeg libavcodec and libavformat libraries, x264, x265, and svt-av1 to create new MP4, MKV, or WebM video files from these
https://handbrake.fr/docs/en/latest/introduction/about.htmlSources.
