Rendering darkens my picture???

[Angelo Mike]

What are your render settings? Those may be making all the difference. And what are you viewing the rendered video in?

http://www.scenethroughglass.com

[Mark Allen]

You may have gone from Computer RGB [0..255] to Studio RGB [16..235]. The preview window is [0..255]. If you output to [16..235] used by lots of video formats then the contrast is increased. The darks get darker and the lights get lighter. There’s a bunch of threads on creative cow on the subject.

If that’s your problem try searching for threads with “computer studio rgb”. It’s more complicated then you might think. I’m working on a large project with video from a Canon HV30 and a 7D. The HV30 is studio RGB and the 7D is computer RGB. I decided to work in computer RGB and then add filters at render time to convert to studio RGB if needed. But that’s just one way to get it done.

[Allan Boes]

Here are my settings

Allan Boes!!!
Working in Vegas pro 10 and Adobe photoshop CS5

[Allan Boes]

I tried t use colour corrector(secondary) and change to Computer RGB to Studio RGB but it dosent help,and using levels messes up the pixels??

Allan Boes!!!
Working in Vegas pro 10 and Adobe photoshop CS5

[Mark Allen]

I’ve often found that the built-in computer RGB to Studio RGB and vice-versa filter presets just don’t get the job done and I have to resort to brute force. I generally bring up the waveform video scope and then fiddle with levels to try to match up the minimum and maximum luminance. If that’s not enough then I break out the color curves filter and adjust the curves for RGB all at once. With the help of the video scope I can usually match the two shots up. It sucks but after enough cycles I can always get them to match.

I wrote a stuck pixel OpenFX filter a while ago to fix a large purple blob which showed up in my video one afternoon. Since that worked so well I’m about to write a color remapper filter to try to get an accurate match for shots with seriously mismatched colors. Now that you’ve reminded me of how many times I had to struggle through matching up mismatched luminance, I’ll be sure to remember to include a luminance-only mode and see if it can’t simplify dealing with this kind of problem. I’ve spent enough time trying to match up videos from different cameras that it would probably be worth the small extra trouble. I probably won’t have it ready for a few weeks though.