Bryan Arnold
Forum Replies Created
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Same thing happens to me all the time. Even talked to the Keylight people to try to figure it out.
It has to do with the openGL settings. If you turn it all off everything should render and preview fine.
I have also had some problems with HD footage from Final Cut using the ProRes or DVCPRO HD codecs doing the same thing (flashes).
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You know, it could be a fluke, but I just had this problem and ended up turning off advanced 3d render and the gamma shift did not happen.
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Interesting look, I did not even think of that.
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Thanks everyone for all the help!
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I think that is exactly it Walter, I tried to make the logo and text black, and there were less artifacts in the image. It was a combination of the colors in the image that made it worse.
There is still compression in the image, but not very noticeable.
I also tried to render the image as a 10-bit uncompressed mov with the same results. That makes me think even more that it is a result of the colors used.
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Yes, canvas and viewer set to 100% looks like this both on comps screen and External JVC HD monitor. I actually set the canvas and viewer to 200% in the screenshot to show what is going on more, but the same is there at 100%
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The graphic is a native 1280×720 photoshop document imported into FCP. I checked to see if there was any zoom on the image in FCP and there was not.
Strange… I guess you do not ever see this?
Also, about the gamma thing. I just did some codec tests, and when I render out in AJA Kona 2vuy (NOT Vuy) there is very minimal gamma shift. So small that no one would ever see it. So that seems to be the fix for that problem.
The still image thing though? Could it be bit depth in Photoshop or pixel aspect ratio? I set them to 8 bit and square pixels.
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I guess I need to learn the ways of the DVCPRO HD workflow.
Take a look at this image.
https://www.visiontracks.com/bryan/Picture-2.jpg
Why is there a gamma shift in the After Effects rendered output. I added highlights on the earing of the doll, when the rendered output from After Effects is put back into FCP there is a change in the levels/colors.
DVCPRO HD 720 –> QT reference –> After Effects 6.5 composite –> render QT animation –> import and render into FCP timeline gets the above change.
I also tried to render from AE to the DVCPRO HD codec with the same results. Does it have something to do with RGB/YUV? Or the color profile in System Preferences?
Thanks,
Bryan -
Thanks for the reply.
Really what this boils down to is, does the 1400 deck properly convert 24p flagged material to NTSC while still retaining that “24p look”.
I think we determined that the answer to the above is yes.
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Yes, I did 2 tests…
1) Capture everyting out of the SD SDI on a NTSC timeline.
2) Capture everyting out of the HD SDI on a Varicam 24p timeline, then converting that to NTSC via the Kona2 SD SDI output to DigiBeta.
They both looked the same, and that was what you were saying also, I think. I thought that they would look different, and mabye they did and I could not notice it. The Panasonic dealer said up and down that I had to do number 2 above to achieve my result, but I now have to tell him differently, they are identical.