[antiquark]

Not quite lossless... look at the bicycle seat behind him. When he tilts his head, the seat moves with his hair.

[manmal]

His gaze also doesn’t quite match.

[hinkley]

Why is nobody noticing the eyes?? This is important!

I feel like I’m taking crazy pills.

[olddustytrail]

Read the text underneath the image and you'll understand.

[hinkley]

No, I really don’t. He acknowledges it’s not in keeping with the title or the thesis and then just sort of waves it off.

Smells like rationalization to me.

[skandium]

Well, this isn't probably a problem with the model, but the source frame having wrong eye gaze. Besides, perceptually lossless need not be defined in a side-by-side comparison context. If you were only viewing the right hand side video, how could you tell the eye gaze is off? The point was more on that the movement looks natural, unlike almost all neural avatars up to this year.

[manmal]

Your argumentation does make sense to me; but it also makes the term lossless pull a lot of weight. Lossless in video encoding is usually defined by zero difference between source and target.

[metaphor]

Very noticeable jitter in bicycle front tire too.