Your MP4 files are TV shows or series, which will not show in Plex library if you haven't renamed them correctly.Ħ. The bit rate of the MP4 is higher than Plex request.ĥ. You have turned off the Direct Play and Direct Stream option in Plex by accident.Ĥ. Your MP4 is packed with soft subtitle streams.ģ.

The MP4 video is not compatible with the devices that installed Plex media server.Ģ. To be specific, there are many situations that can lead to this issue, for example:ġ. Why your MP4 files not showing up in Plex library? Why Plex can play some MP4 files while others won't play normally? Maybe it's an issue of your file names, MP4 video format compatibility, or the MKV file type etc. Plex Won't Recognize or Play Certain MP4 Files - Possible Reasons However, there are still many people are facing the problems when playing MP4 files via Plex, for example, Plex can't see some MP4 files, or your MP4 video absolutely not showing in the library while Plex is scanning files, not to mention playing 4K HEVC MP4 on Plex. Generally, it does organize all of your files and let you view them from virtually laptops/desktops to phones to HDTVs. First, it's trying to Direct Play no matter what so that might be an issue…'Īn increasing number of users are using Plex Media Server to take control over your digital media library. mp4s and some will play just fine on phones, tvs, tablets, etc. mp4 will play others will not play on Plex? I've got various types of.

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