When comparing MPC-BE vs Mellow Player, the Slant community recommends MPC-BE for most people. In the question“What are the best audio players for Windows?” MPC-BE is ranked 13th while Mellow Player is ranked 27th. The most important reason people chose MPC-BE is:
Seek Bar supports thumbnail preview (like Youtube) and chapters marker.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Displays preview thumbnails
Seek Bar supports thumbnail preview (like Youtube) and chapters marker.
Pro Supports madVR external Video renderer
madVR is a high quality video renderer (GPU assisted).
Pro Supports most known audio and video formats
Plays various video and audio files, and also supports H.265 (with small file size installation). The player doesn't use a lot of computer resources.
Pro 32-bit & 64-bit support
Pro Built-in YouTube playback support
Can play YouTube videos out of the box. Just drag and drop the URL to the interface.
Pro Supports multimedia hotkeys
Pro Native
It is written in Qt so it requires less resources than a web browser or an electron application.
Pro AppImage
It is available as AppImage so you can easily try it.
Cons
Con QML
It written in Qt-QML which ignores all Human Interface Guidelines and make the app look like a web page.
Con Not native
It's using qt5-webengine which is not much different from electron / a webbrowser.