Occassionally we had problems with DXV's compression. It is normally connected to dark subtle gradients. I did some test and could reproduce the issue.
The original consists of some subtle gradients, saved lossless. DVX compressed (screenshot from Resolume's output) it looks like this:
In some real situation, lets say: slow camera pans, these compression articfacts get even more visible as they result in aggressivly jagging lines while the actual movie animates in a restrained way. Especially in a cinema situation on a nice, crisp HD projector, the situation can get quite messy.
Here is a real-live screenshot:
(In this one also canon dslr compression artifacts come into play .. it is not dxv alone
Anyway, I know that compression algorithms have to balance multiple factors - filesize, performance as well as quality. Hence hues get less well compressed then brightness, and darker areas less then mid-range-brightness areas (?). Thus I would not call the above a bug, rather a worst-case-scenario.
So, here comes the idea: introduce compression profiles for dxv!
Aside from the default profile (dxv as is), there could be one that compresses the darker parts very well, another one with a generally low compression (resulting in huge files), maybe even one for black/white only.
What do you guys think, is that possible?