@bitcoinplebdev and me reproduced the issue with no video, only sound on my Linux machine.

It's caused by Apple Quicktime:

```
$ file course-1-lesson-3.mp4
course-1-lesson-3.mp4: ISO Media, Apple QuickTime movie, Apple QuickTime (.MOV/QT)
```

This one works:

```
$ file course-1-lesson-4.mp4
course-1-lesson-4.mp4: ISO Media, MP4 Base Media v1 [ISO 14496-12:2003]
```

You're using Linux, too, right?

BlokchainB

devs

Paid 50k Sats for a month’s access to  PlebDevs course and feeling robbed

Safari, Firefox, Chrome should all work!

I'm trying to replicate your issue in Brave currently and I've for sure narrowed it down to an issue with my CDN OR how I'm embedding videos in the nostr notes but still it works every time for me on Brave?

Curious if using another browser (or clearing your cache) will allow the video to play