Firefox Video Mime Type Problem

Support
1

Hi I’m oneboxing Twitter feeds and all is well except for Firefox which won’t show the video.
I get a mime type error placeholder.

I double checked here on Meta and found this post.
https://meta.discourse.org/t/how-to-embed-a-video-from-twitter/142685

This screenshot is from that thread using latest Firefox, no extensions, plus only two plugins which came installed.

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It’s working in Chrome and Edge.

2

Possibly weird encoding of the video, perhaps in a video encoding format that Firefox does not support? You’d need to download the video and view the video metadata to find out for sure.

Also: I had some oddities viewing this video on Twitter as well, even in Windows / Chrome.

Here’s the metadata for the video file though

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image593×659 16 KB

Also it works fine for me in Firefox / Windows? Screenshot

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image1548×1799 433 KB

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