On May 25, 2005, at 10:41 AM, Colin Holgate wrote:
At 10:21 AM -0700 5/25/05, Roger Howard wrote:
I'm surprised to have only received 3 responses to this
Your message was a bit deep, and looked like a big time commitment to
even understand what you were saying!
Well, the experiment on your end is simple - open up the Source.mov and
H264.mov samples in QT Player on your system and see if they match...
if they don't (or do!) send me a screen shot along with details on your
setup.
I have commented on the difference in image brightness on another
list, and the information that came back suggests that H.264 does
better color space control, and that's why it may look noticeably
brighter than the DV source material. It's not that H.264 is wrong,
it's DV that was wrong.
I'm not sure I'd agree this is "right", at least without some clear
explanation of what's happening. My source media is sRGB images, looks
great on my system both with and without respecting embedded profiles,
and looks correct in every codec I've tried but H.264; H.264 rendering
seems to be all over the map, depending on system settings, which in my
book is anything but correct - I work a lot with color management of
still imagery so I'm very experienced in that area, and this to me is
broken behavior as it's obviously doing some kind of
compensation/matching, but the results are not acceptable.
Anyhow, if you've got the time, any extra data is helpful.
