If I’m reading this right, this is <i>yet another</i> example of people claiming to run Doom somewhere, but is actually only <i>displaying</i> Doom, while Doom is running somewhere else, on another system.
<i>They played fine on my laptop, but would not scan as gifs in iOS. It was a nightmare of a problem to debug - what are your search terms here?</i><p>The GIF specification, GIFs that work and those that don't, and a hex editor.<p>Given all the other impressive work in this article, I'm surprised that wasn't an easy problem for them to debug --- the latter seems almost trivial to me (find the differences) in contrast to the amount of creative thinking required to figure out how to run Doom in iPhone Photos.
I recall many years ago I was able to extend a video by multiple minutes of a black screen, by extracting the timestamps (PTS?) of frames to a text file, then increasing the timestamp of the final frame (or end of video?) by a very large number. Sadly I'm unable to find the files or program I used to do it.
<p><pre><code> eieio.games uses an invalid security certificate.
The certificate is not trusted because it was signed
using a signature algorithm that was disabled because
that algorithm is not secure.
Error code: SEC_ERROR_CERT_SIGNATURE_ALGORITHM_DISABLED</code></pre>