Why output is darker than original footage
by Steve Rhoden
on
Jul 15, 2008 at 4:49:15 am
Hello Everyone,
Been using combustion now for the past 3 years, and has always happened
that anything i render whether i add effects or not, the output is
always a bit darker than the original footage...anyone knows why?
It is not really a problem, because i correct that when doing my finishing...However i would love to eliminate it all together.
Been searching for a solution for a long time with no success.
So if anyone here has a solution why output is darker or if its a
combustion bug, please let me know..i am certain most people have this issue.
Thanks
Steve Rhoden
Creative Director
TNX EFFECTS STUDIOS.
Re: Why output is darker than original footage by Dean DeCarlo on Jul 15, 2008 at 4:59:04 pm
I'll echo that Quicktime often causes gamma shifts in footage. Better to bring footage in and render out as image sequences. Tiff, Targa and PNG all work fine for me.
Re: Why output is darker than original footage by Dean DeCarlo on Jul 16, 2008 at 1:41:54 am
Hmmm. I would try reading in a png file and render it out straight with no effects to a png file and see if there is a difference. If so, try it targa to targa and tiff to tiff. Do a difference key and see what the luma shift is and if it is consistent with all formats. Are you using OpenGL? Make sure that OpenGL is set to software rendering. If there is still a problem trash the host.ini file. If that doesn't help then completely reinstall the app. I'd also call support if the problem persists. It should not change the values on footage arbitrarily. The only time that happened to me was bringing footage to my pc from mac using Quicktime in which case there is a known gamma shift whenever you use any codec that Apple considers "video" (using YUV color space). Hope this helps. Good luck.
Re: Why output is darker than original footage by Steve Rhoden on Jul 18, 2008 at 8:30:55 pm
Shin,
LOL...Tried, tested and tweaked every format, codecs and settings there possibly is...same darkened contrast than the original.
The solution : I just have to reduce the contrast in my
finishing in my NLE software.
Steve Rhoden
Creative Director
TNX EFFECTS STUDIOS.
Re: Why output is darker than original footage by Joe Murray on Jul 23, 2008 at 2:51:17 am
Which NEL software? If you're using Final Cut, are you eventually converting back to Quicktime, even if you've rendered an image sequence, or are you importing the images directly into Final Cut?
Re: Why output is darker than original footage by Steve Rhoden on Jul 23, 2008 at 3:03:08 am
No, Sony Vegas all the way....and i mostly render out from combustion
using the targa format.
Cant fix the problem in combustion, so i compensate using my NLE
(Sony Vegas).
Steve Rhoden
Creative Director
TNX EFFECTS STUDIOS.
