# Custom metadata not loading

**URL:** <https://forums.plex.tv/t/custom-metadata-not-loading/227320>\
**Category:** General Discussions\
**Created:** [February 28, 2018, 5:11pm UTC](https://forums.plex.tv/t/custom-metadata-not-loading/227320 "2018-02-28T17:11:18Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![darthsitthiander](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/darthsitthiander/32/116988_2.png) [@darthsitthiander](https://forums.plex.tv/u/darthsitthiander)\
**Post date:** [March 7, 2018, 11:12am UTC](https://forums.plex.tv/t/custom-metadata-not-loading/227320/11 "2018-03-07T11:12:21Z")

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> @OttoKerner said:
> 
> > @darthsitthiander said:  
> > So there is no way to embed the episode titles as metadata in MKVs using MKVToolnix or similar programs?
> 
> You can embed them, but unfortunately Plex won’t read these.
> 
> > Does it make a difference if say I switch all the files to MP4?
> 
> Yes, MP4 is the only video container format from which Plex can read metadata.  
> If you set the `Title` tag to your episode title, Plex will use it.  
> (you might need another [Plex Dance](https://forums.plex.tv/t/the-plex-dance/197064) afterwards, though)

Awesome, thanks! This is gonna take some time haha

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