MPlayerX

A simple media player that will just play any video or audio file you have. JustPlay supports MP4, AVI, MOV, SWF, DAT, MKV, MP3, FLAC, M4V, FLV, Blu-ray, etc. You won't need additional codecs or plugins - this tiny player actually comes packed with all necessary stuff, but you won't even notice - that's how compact it is! No matter how simple and small the player is, it'll easily handle your 4K and 8K videos thanks to its hardware accelerated decoding functionality. JustPlay is a universal macOS app with M1 support, so it can run natively both on Apple Silicon Macs and on Intel-based Macs. JustPlay allows for flexible playback adjustments. You can set any playback speed, set the subtitle or sound delay whenever there is need. Even the arrow key time skip interval can be adjusted. When you start the player, it can resume the playback right away with the previously selected subtitles and soundtrack, or you can choose to always start at a pause.

SMPlayer is a free media player for Windows and Linux with built-in codecs that can play virtually all video and audio formats. It doesn't need any external codecs. Just install SMPlayer and you'll be able to play all formats without the hassle to find and install codec packs. One of the most interesting features of SMPlayer: it remembers the settings of all files you play. So you start to watch a movie but you have to leave but don't worry, when you open that movie again it will be resumed at the same point you left it, and with the same settings: audio track, subtitles, and volume. SMPlayer is a graphical user interface (GUI) for the award-winning MPlayer, which is capable of playing almost all known video and audio formats. But apart from providing access for the most common and useful options of MPlayer, SMPlayer adds other interesting features like the possibility to play Youtube videos or download subtitles.