I started a community for images and gifs, and while images seem to upload just fine I can’t get .mp4 files to upload properly. If you click the link it works, but the gif won’t load in the thumbnail, tab, or comment page. Is this a site-wide issue, or am I doing something wrong?
Clarification: what do you mean by uploading them elsewhere? Referring to my screenshot, the first two links “Velvet Malachite” are to gfycat (I tried two different urls for the same mp4 file), and the third link “Jellyfish” is to imgur. The fourth link is a jpeg (so no issues there). I also tried downloading the mp4 file and then uploading it from my computer so it would be hosted locally, but apparently you cannot upload mp4s.
Oh didn’t notice that sorry. But it looks like Lemmy knows how to embed the gfycat video (same for PeerTube videos), ie you can play that video directly on Lemmy, but it doesn’t indeed show a thumbnail.