Banding when rendering from DPX to 10bit QT

	Banding when rendering from DPX to 10bit QT by Jonathan Briggs on Aug 26, 2009 at 7:49:48 pm Hi So I have a feature shot on RED which has had all the R3D files transcoded to DPXs and loaded into Color. The DPXs are in a custom project at 2048 x 857. I am rendering to Uncompressed 10bit QTs at 2048 x 857 and bringing these shots into a FCP timeline at 1920 x 1080 and fitting the shots to the width of the frame - essentially creating a letterbox version of the film within the 1920 x 1080 frame. So the problem is that when I bring the rendered shots into FCP I'm getting terrible banding - the shots don't look anywhere near as bad within color. There is some very subtle tonal graduation but nothing unacceptable. I'm running Color 1.5 and FC Studio 3 on a 8 core Mac with a AJA Kona card out putting 1920 x 1080 24psf signal to a grade 1 calibrated monitor. Can anyone tell me how to avoid seeing this terrible banding when going into FCP? Things I've already tried - Changing the Internal Pixel Format to every setting. Rendering to both the AJA 10bit codec and the Apple 10bit Codec Rendering to Pro Res 4444 Rendering to DPXs and converting the DPXs to QT movies in the AJA translator and Shake. Changing from LIN t LOG and regrading and re-rendering Using Glue Tools to bring rendered DPXs into FCP Thanks in advance for any help anyone can give me! Both me and the client reckon the only solution is going to be to Render out to DPX/Cineon from Color and go into a Baselight/Quantel/Scratch for play-out - this really would not be good so if someone has another suggestion - please help! Thanks Jonny Respond to this post   •   Return to posts index

	Re: Banding when rendering from DPX to 10bit QT by Aaron Neitz on Aug 27, 2009 at 5:36:13 pm What are you rendering settings in FCP? Since FCP needs to resize the quicktime to fit-width, it's reprocessing all your pixels and most likely causing the banding. you might consider having Color do a resize to fit 1920 rather than FCP Respond to this post   •   Return to posts index

	Re: Banding when rendering from DPX to 10bit QT by Daniel Myrick on Aug 27, 2009 at 5:55:27 pm Also, check in your Kona Control panel settings and make sure it's not down converting on the way out to your monitor when in FCP. With the control panel launched, make sure you make FCP 'active' to see the Kona settings within FCP, because they can change if only the Kona panel is active. d myrick Respond to this post   •   Return to posts index