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WYSI *NOT* WYG — problems with Use Maximum Render Quality setting for output
Hi All,
I’m enjoying my transition to Premiere Pro 6 very much and so far it’s working well. I recently used it on a simple job. Doing the job itself was a breeze, but I ran into an output problem that surprised me. I’m hoping you can help.
My workflow involved sending my client h.264 previews, as well as screen grabs made using the Export Frame button in the Program monitor.
When the video was finished, I exported to ProRes 422 with the Use Maximum Render Quality setting checked (I left it off for the h.264 previews).
I was surprised that the final render for a particular effect was so much lighter than the screen grab and h.264 client previews. I did a test render to ProRes with Maximum Render Quality off and the shot looked correct. I don’t think this is a gamma bug. Based on my tests, Maximum Render Quality is significantly changing the way the video looks in this shot.
The effect I was going for was a shaped spotlight. I made a white filled polygon over a black background in the titler tool and overlaid it on top of the video below at 60% opacity. In the end, I went with a different technique, in part because of the inconsistency between the previews and the final. Here are screen shots:
Question: how can I avoid this in the future? What do I need to do to make sure what I see in the Program monitor is *exactly* what I’ll get in my final render?
Thanks for your help!
_______________________
David Lawrence
art~media~design~research
propaganda.com
publicmattersgroup.com
facebook.com/dlawrence
twitter.com/dhl -
12 Replies
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Have you checked your prores codec setting? The gamma correction should be turned off. It’s on by default.
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[Tero Ahlfors] “Have you checked your prores codec setting? The gamma correction should be turned off. It’s on by default.”
Hi Tero,
In my screen shots above, the ProRes codec settings are identical. The only difference is the Use Maximum Render Quality setting.
The ProRes gamma setting makes no difference. I tried the test again making sure to specify that gamma was set to none and had the same results.
_______________________
David Lawrence
art~media~design~research
propaganda.com
publicmattersgroup.com
facebook.com/dlawrence
twitter.com/dhl -
Is it just a file-viewing problem? I.e. do the exported elements look different if viewed on an externa monitor through Premier or After Effects?
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Ok,
Do you require the maximum render quality tab to be checked eg. do you have any resizing or scaling in the video?
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I’ve found similar issues; I can’t export ProRes or DNxHD with Maximum Render Quality checked. Opacity and multiple layers involving transparency don’t render out properly.
This is a carry-over issue from CS5.5 and seems to affect Quicktime-wrapped destination media.
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There is no intuitive interface, not even the nipple. It’s all learned. – Bruce Ediger -
[Erik Lindahl] “Is it just a file-viewing problem? I.e. do the exported elements look different if viewed on an externa monitor through Premier or After Effects?”
I don’t have an external monitor. These files are for all digital delivery and distribution (web, and mobile devices) so I use my monitor as a reference and so far no complaints from the client ever.
The maximum quality rendered file looks wrong in any application I play it back in.
_______________________
David Lawrence
art~media~design~research
propaganda.com
publicmattersgroup.com
facebook.com/dlawrence
twitter.com/dhl -
[Tero Ahlfors] “Do you require the maximum render quality tab to be checked eg. do you have any resizing or scaling in the video?”
No scaling, but I am transcoding from XDCAM EX to ProRes for the master. I notice that the video looks grainier if maximum render quality is unchecked. With it on, it looks better. The difference is subtle, but I see it and I want to give my clients the best quality I can.
_______________________
David Lawrence
art~media~design~research
propaganda.com
publicmattersgroup.com
facebook.com/dlawrence
twitter.com/dhl -
[Petros Kolyvas] “I’ve found similar issues; I can’t export ProRes or DNxHD with Maximum Render Quality checked. Opacity and multiple layers involving transparency don’t render out properly.
This is a carry-over issue from CS5.5 and seems to affect Quicktime-wrapped destination media.”
Wow, really? This is a huge problem if true. Is this documented anywhere?
_______________________
David Lawrence
art~media~design~research
propaganda.com
publicmattersgroup.com
facebook.com/dlawrence
twitter.com/dhl -
Are you using a Cuda Card? Try to turn that off and work in Software only mode. The setting with CUDA puts the export into linear color space, which lifts the Gamma, turning it off takes you out of the color space change.
– JB
Jon Barrie
Adobe Video Solutions Consultant ANZ
Jon’s YouTube Tutorial Page
follow Jon with twitter -
Your not alone, I see this with the drop shadow effect too.
It was a problem with CS5.5 as well.Lame Adobe.
Chris Tompkins
Video Atlanta LLC
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