# No thumbnails for .mp4

**URL:** https://resource.dopus.com/t/no-thumbnails-for-mp4/49145
**Category:** Help & Support
**Created:** [February 19, 2024, 6:14pm UTC](https://resource.dopus.com/t/no-thumbnails-for-mp4/49145 "2024-02-19T18:14:24Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Leo](https://resource.dopus.com/user_avatar/resource.dopus.com/leo/32/69732_2.png) [@Leo](https://resource.dopus.com/u/Leo)
#### Post date: [February 19, 2024, 6:21pm UTC](https://resource.dopus.com/t/no-thumbnails-for-mp4/49145/2 "2024-02-19T18:21:14Z")

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Video thumbnails should be the same in Opus and File Explorer. If they aren't working in File Explorer either, you probably need to install a codec. Please see here for suggestions:

> [@HOW TO: Enable/fix playback of various media formats in Opus](https://resource.dopus.com/t/how-to-enable-fix-playback-of-various-media-formats-in-opus/1974):
>
> Plugin Config Go to Settings / Preferences / Viewer / Plugins and configure the Video & Audio (Opus 13) or Movie (Opus 12) plugin. Make sure it includes the extension you are trying to play in its list. Codecs If videos aren't playing, a codec is p…

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