Kona3 gamma shifts and chroma issues

[Paul Flint]

the problem is I don’t have any alternative. FCP is the tool I have to use. I know that many studios are using FCP in their pipeline. There must be a way to avoid those problems. And the only way to get image sequence from FCP is to export it that way. I can send Project to motion and export the files there but the export itself as I mentioned before does not alter images in any way so its not an issue. It is true that the problem is somewhere between AJA and FCP when the footage is being encoded.

Gary if you could shed some light onto this, how do you think I can avoid those problems I would be gratefull.

Paul Flint

[Jeremy Garchow]

I know this is the case with AE, but I haven’t tried it with Motion. First, export a Quicktime Movie out of FCP at ‘current settings’. Second, Quit FCP and Quit Motion.

Before you launch Motion, go to your Hard Drive > Library > Quicktime folder and move the AJAUncompressedcodec.component out of the folder there (say to your desktop for now). Now, launch Motion and try to make an image sequence there from your ‘Quicktime Movie’.

This process works very well for AE renders and returns a near perfect render. If you have any clips that are out of range, they will get clipped to RGB/SMPTE range.

I am not saying this will work for Motion, but it works great for AE renders.

Jeremy

[Paul Flint]

hmm this seams to complex – and it slows the process a lot. I need to find some automated way to compensate for the gamma shift while the card is converting the image from YUV to RGB while ingesting without any image quality and detail degradation. Any ideas guys ?

[Gary Adcock]

[Paul Flint] “hmm this seams to complex – and it slows the process a lot. I need to find some automated way to compensate for the gamma shift while the card is converting the image from YUV to RGB while ingesting without any image quality and detail degradation. Any ideas guys ?”

Stop using Final Cut for capture or use one of the workarounds for the issue

those are the only choices

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

Inside look at the IoHD
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

[Paul Flint]

Gary, we figured it out 10 posts before that, but what workarounds do you have in mind. Seams that you have to deal with this stuff every day so please share with me some workarounds. I do know I need a workaround but dont know how. Since I cant stop using FCP the trick need to involve FCP in its pipeline. Maybe this will help other FCP+AJA combo users.

cheers
Paul Flint

[Jeremy Garchow]

[Paul Flint] “hmm this seams to complex – and it slows the process a lot. “

Tell me this. If you remove the codec, launch motion and render do you get the gamma shift? If so and you don’t have to keep remoivng the ocdec, ust leave it out of the Wuicktime fodler. How does that slow it down? You can send to Motion right from FCP.

Jeremy