24 Jun
2014
24 Jun
'14
8:40 a.m.
You made me notice the Color conversion option, I never ever paid any
attention to it.
Out of gamut colors and some posterization effects... It's worth a try
the REC709 option, and not the default srgb.
Thanks!
Manuel AC
On Tue, Jun 24, 2014 at 2:39 AM, Carsten Kurz <audiovisual(a)t-online.de> wrote:
Ah... as
Carsten suggested: are we talking about drastic completely-wrong colours, or a slight
tint/gamma shift?
I jumped on Manuels description because I remember very well the moment I saw this
similiar issue on our screen - it was the first full feature that I converted to be shown
on our then brand new Sony.
I used DVD-o-matic, I chose REC709 as it was grabbed from a BluRay. I then noticed the
result was to bright and flat on the projector, and it had greenish/blocky artifacts in
some dark parts.
So, this might now just be a historical issue related to DVD-o-matic. It had no user
editable color conversion matrix then. Maybe something was wrong there. Yet the visible
blocking would be caused by the J2K compression I guess. Both images were processed with
200MBit/s, and other parts of that feature had no blocking issues.
- Carsten