How do the new lossy video formats work for looped videos? It looks like gifv has been accepted by r&#x2F;perfectLoops...[1] Do HEVC etc require the last frame of a video to be a keyframe? Are predicted frames specified at the same quality level as keyframes?<p>[1] <a href="http:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;perfectLoops" rel="nofollow">http:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;perfectLoops</a>