[rozab]

I've seen many strange mp4s and webms floating around various discord communities. Some crash your client at a fitting moment in the video, some appear to be thousands of hours long, some appear to be seconds long but are actually hours long, some even loop! somehow.

[jart]

Do you still have copies of them? Could you send them to [e-mail]? I'd like to setup a web page hosting MPEG torture tests, since there doesn't appear to be one already. This is actually a very common practice for things like RFCs written for text-based protocols. We should ideally have more accessible information online that helps video software authors to harden their implementations against these sorts of busy beaver attacks.

[Rompect]

I even saw videos that play something entirely different the second time you play it!