I need some help troubleshooting why embedded WebM works on some systems, but not others. Does this embedded webM clip work for you without opening the link in a new page? What OS and browser are you using? I’m embedding by just pasting the raw url in the message body: s1.webmshare.com/jvY0A.webm Clickable link: s1.webmshare.com/jvY0A.webm Here are my observations: OS Browser Result Ubuntu 20.04 Firefox 76 Fail Ubuntu 20.04 Chrome 81 Fail OSX 10.13.6 Chrome 81 Fail Andorid 7 DuckDuckGo Works I believe this used to work on Ubuntu 19.10, but I’m not going to downgrade to double-check. Here’s what shows-up for me in Firefox: [image]

I don’t know why the answer would be any different than this: WebM video format | Can I use... Support tables for HTML5, CSS3, etc "Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

Is that embedded WebM clip working for you? I checked again and I’m still getting the “No video with supported format and MIME type found” error in Firefox 86 and Chrome 88 for Ubuntu 20.04. Seems like it should be working according to CanIUse.

Also interesting that with the chrome dev console open, the original version works after a refresh: Chrome first load: Mixed Content: The page at ‘How to embed WebM’ was loaded over HTTPS, but requested an insecure element ‘http://s1.webmshare.com/jvY0A.webm’. This request was automatically upgraded to HTTPS, For more information see Chromium Blog: No More Mixed Messages About HTTPS Failed to load resource: the server responded with a status of 404 () webmshare. your free webm hosting and sharing tool Chrome refresh (surprising that it works now - I guess security settings are relaxed with dev tools open): Mixed Content: The page at ‘How to embed WebM’ was loaded over HTTPS, but requested an insecure element ‘http://s1.webmshare.com/jvY0A.webm’. This request was automatically upgraded to HTTPS, For more information see Chromium Blog: No More Mixed Messages About HTTPS The errors are slightly different in Firefox and it continues to fail to load after refresh with dev console open. This consistent behavior seems more reasonable: Loading mixed (insecure) display content “webmshare. your free webm hosting and sharing tool on a secure page Failed to load ‘webmshare. your free webm hosting and sharing tool. A ServiceWorker passed a promise to FetchEvent.respondWith() that rejected with ‘Error: no-response :: [{“url”:“http://s1.webmshare.com/jvY0A.webm”}]’. All candidate resources failed to load. Media load paused. Seems like a http vs https issue. With the original link (no prefix), it appears to default to http://. Here’s another version that explicitly includes the secure https:// prefix, but that’s not working either. https://s1.webmshare.com/jvY0A.webm Appears to be an issue with the webmshare host where their https connection is not actually secure. [webmshare-https] A bit annoying that Chrome, Firefox and DDG all handle this issue differently.

[image] miles: Appears to be an issue with the webmshare host where their https connection is not actually secure. Yes, this is not our problem, this is a problem with the specific target site.

Turns out it’s most straightforward to just drag and drop .webm files directly into the forum, rather than relying on an external host. Drag and drop (uploading directly to the discourse instance) generates: ![fontawesome2|video](upload://aI4h9yYRFK9BBCBLED4WcBr6Y1f.webm) And is working fine.

How to embed WebM

Product Support

codinghorror (Jeff Atwood) March 7, 2021, 8:29am 2

I don’t know why the answer would be any different than this:

Topic		Replies	Views
Embedding Discourse Comments via Javascript over https Product Support	2	777	January 31, 2020
Add WhiteListIframe embed of everycircuit.com Product Support	9	2539	September 16, 2019
Restrict embedded video to HTTPS Product Support	1	508	January 3, 2021
Dailymotion videos are not correctly embeded Bug	5	1917	January 23, 2015
Media fragments in webm file Feature	4	1294	April 21, 2018

How to embed WebM

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