8bit rendering vs 32bit

wwjd wrote on 7/24/2013, 1:07 PM

went to render a project but when I put it into 32bit video mode, it locked up 24% of the way in. tried playing it back also and seemed to lock up at the same spot.

I'm sure it is a plugin or setting or whatever, but I have not run across this before... is there something obvious I dont know about to get it to work?

vp12

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vtxrocketeer wrote on 7/26/2013, 7:18 PM

As with Will, I had to click "apply" first, too, in making the change from 8-->32 bit stick. Thinking I was clever, it wasn't long before I discovered that it was a one way ticket...

videoITguy wrote on 7/26/2013, 7:34 PM

vtxrocketeer and previous post by willgen NOW raise serious concerns about what build 670 is doing with a given system - be it GPU setting, type of video card and driver version, etc. Somethin's as "crazy" as ever when a person can roll back previous version and restore different behaviors.

SCS has apparently introduced new bug complexity in the latest 670 build.

Robert Johnston wrote on 7/27/2013, 2:13 AM

@vtxrocketeer:

You can switch back to 8-bit using a workaround. Evidently you didn't read my post several blocks back?

willqen wrote on 7/27/2013, 2:32 AM

Robert Johnson is right.

I experimented using levels and the studio rgb to computer rgb preset and can get 32bit full range to look exactly the same (to my eyes, & with my gear) as 32bit floating point (video).

Uncanny.

That works as a workaround. And it doesn't seem too hard to do.

Thanks Robert ... Much appreciated ...

Edit: works vice-versa. Sometimes 32bit full range color actually looks much better than 32bit video range. Using levels I can bring 32bit floating point (video) up to 32bit full range's color quality. Don't know why yet ... But I'll figure it out sooner or later. Maybe one of you could enlighten me ... mostly notice it in AVCHD media, all other parameters being the same.

vtxrocketeer wrote on 7/27/2013, 9:21 AM

You can switch back to 8-bit using a workaround. Evidently you didn't read my post several blocks back?

Quite right, Robert. I think I missed your post. Thanks! (But, man, what a kludge of a workaround.)

GlennChan wrote on 7/27/2013, 5:52 PM

Edit: works vice-versa. Sometimes 32bit full range color actually looks much better than 32bit video range. Using levels I can bring 32bit floating point (video) up to 32bit full range's color quality. Don't know why yet ... But I'll figure it out sooner or later. Maybe one of you could enlighten me ... mostly notice it in AVCHD media, all other parameters being the same.
That's because Vegas' preview isn't accurate in some/many situations. This is extremely unintuitive but you need to understand that first... Vegas is not WSIWIG. What you see isn't always what you get.

If all video is in studio RGB levels (which is often the case, e.g. 8-bit project with AVCHD)... then the Video Preview window won't be accurate. One way to get around this is to use the Windows secondary display as your preview device. In the settings for it, check the "studio RGB" checkbox.

http://www.glennchan.info/articles/vegas/v8color/vegas-9-levels.htm