Resolution "snapping"

[dvaeg]

Watched the new 4K UHD of Bridge on the River Kwai last night and there was an unusual video problem I have never seen before. I searched here and on reddit and broadly across the web and have not seen it discussed, so I assume it's something with my setup.

Issue: When there was a fade in/fade out or scene transition, and ONLY during this time, the video mimicked youtube or netflix streaming when the resolution starts low then "snaps" or "jumps" to full res.

See here, as the scene switches to the river. Color and clarity jump instantly.

This did not happen for normal edits, only when there was a scene change. It happened during almost every such change.

Is this a disc issue? Encoding issue? TV/player/cable issue? Any ideas whatsoever?

[CatBus]

I don't have this disc so can't confirm what's normal, but I can say fades and wipes are optical effects, which with film means they go through extra generational loss from the compositing. If the UHD didn't (or couldn't) re-composite them from the negatives, and the surrounding scenes were taken from negatives, then some drop in detail during the optical effect is expected. Whether that's all we're seeing here or not, I don't know.

[Modren]

Originally Posted by CatBus

I don't have this disc so can't confirm what's normal, but I can say fades and wipes are optical effects, which with film means they go through extra generational loss from the compositing. If the UHD didn't (or couldn't) re-composite them from the negatives, and the surrounding scenes were taken from negatives, then some drop in detail during the optical effect is expected. Whether that's all we're seeing here or not, I don't know.

Yeah, that's almost certainly what's happening. You can tell the color timing changes too, becoming more contrast-y. That's a pretty clear sign that they're switching to a different source.

[Geoff D]

Originally Posted by CatBus

I don't have this disc so can't confirm what's normal, but I can say fades and wipes are optical effects, which with film means they go through extra generational loss from the compositing. If the UHD didn't (or couldn't) re-composite them from the negatives, and the surrounding scenes were taken from negatives, then some drop in detail during the optical effect is expected. Whether that's all we're seeing here or not, I don't know.

That is exactly what we’re seeing on Kwai. Always been there.