MediaInfo is a convenient unified display of the most relevant technical and tag data for video and audio files.
https://mediaarea.net/en/MediaInfo
Audio/Video Applications
Mp3tag v3.24 (32/64 bit)
Mp3tag is a powerful and easy-to-use tool to edit metadata of audio files.
It supports batch tag-editing of ID3v1, ID3v2.3, ID3v2.4, iTunes MP4, WMA, Vorbis Comments and APE Tags for multiple files at once covering a variety of audio formats.
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
tinyMediaManager v5.0.1.1
tinyMediaManager is a media management tool written in Java/Swing. It is written to provide metadata for the Kodi Media Center (formerly known as XBMC), MediaPortal and Plex media server. Due to the fact that it is written in Java, tinyMediaManager will run on Windows, Linux and macOS (and possible more OS).
https://www.tinymediamanager.org
tinyMediaManager v5.0.1
tinyMediaManager is a media management tool written in Java/Swing. It is written to provide metadata for the Kodi Media Center (formerly known as XBMC), MediaPortal and Plex media server. Due to the fact that it is written in Java, tinyMediaManager will run on Windows, Linux and macOS (and possible more OS).
https://www.tinymediamanager.org
Kodi 20.3 “Nexus”
Kodi is an award-winning free and open source (GPL) software media player and entertainment hub that can be installed on Linux, OSX, Windows, iOS, tvOS and Android. It is designed around a “10-foot user interface” for use with televisions and remote controls.
Users can play and view most videos, music, podcasts, games and other digital media files from local and network storage media and the internet.
https://kodi.tv
MKVToolNix 82.0 “I’m The President”
MKVToolNix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows.
https://mkvtoolnix.download/index.html
tinyMediaManager v5.0
tinyMediaManager is a media management tool written in Java/Swing. It is written to provide metadata for the Kodi Media Center (formerly known as XBMC), MediaPortal and Plex media server. Due to the fact that it is written in Java, tinyMediaManager will run on Windows, Linux and macOS (and possible more OS).
https://www.tinymediamanager.org
HandBrake 1.7.2
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/1.7.0/introduction/about.htmlSources
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PlayerFab 7 (former DVDFab Player) 7.0.4.5 (32/64 bit)
Play any discs (including 4K UHD), local videos, and streaming videos. Organize your movie/music library.
https://www.dvdfab.cn/playerfab.htm
XMedia Recode 3.5.8.9
XMedia Recode can convert almost all known audio and video formats.
https://www.xmedia-recode.de/en/