![Zed A. Shaw, Writer on Twitter: "The other day some guy chastised me for not "studying all of the codecs before you write your own DUDE." Let me explain why this is Zed A. Shaw, Writer on Twitter: "The other day some guy chastised me for not "studying all of the codecs before you write your own DUDE." Let me explain why this is](https://pbs.twimg.com/media/EWQEpAYWoAMxxwG.png)
Zed A. Shaw, Writer on Twitter: "The other day some guy chastised me for not "studying all of the codecs before you write your own DUDE." Let me explain why this is
![NotSupportedError: Failed to execute 'addSourceBuffer' on 'MediaSource' · Issue #155 · AlexxIT/WebRTC · GitHub NotSupportedError: Failed to execute 'addSourceBuffer' on 'MediaSource' · Issue #155 · AlexxIT/WebRTC · GitHub](https://user-images.githubusercontent.com/29582865/140663992-b504d40f-69c9-49f7-b417-9725e565410a.png)
NotSupportedError: Failed to execute 'addSourceBuffer' on 'MediaSource' · Issue #155 · AlexxIT/WebRTC · GitHub
![Cannot play .mp4 videos on NC 20, I need to get this fixed for school - ℹ️ Support - Nextcloud community Cannot play .mp4 videos on NC 20, I need to get this fixed for school - ℹ️ Support - Nextcloud community](https://help.nextcloud.com/uploads/default/original/3X/0/4/04c0f606db4f7c865958508af78c4788b66ca772.png)