Thanks,

I am rendering to MainConcept MPEG2 (HDV 1080/25p) or Blue-Ray (same format), from HDV clips (1080/25PsF). All 4 cores are busy, but while they are 100% busy in 8bit, they are used only up to 60% with 32bit video.

I've tried rendering in 32 bit both in XP and Vista 64. On both occasions all 4 cores are firing under full load.

What I do find interesting though is that to get Vegas to actually render in 32 bit, I HAD to introduce a color correction onto the time line to knock out "NO RECOMPRESSION REQUIRED" other wise it would simply smartrender (the cpu was running at 45% during the smart render)

If I knocked out smart render then during an 8bit render the speed would be as it normally would at 100% load, but in 32 bit the rendering would be slow as molasses at 100% load (indicating to me anyway that an ACTUAL 32 bit render was happening)

But it is clear to me that the 32 bit render does not work at all UNLESS a color correction (or similar) is introduced.

I've got to ask, just what do you think 32 bit is giving you anyway?

Bob.

I don't think much of anything, right now anyway.... I don't even use it. Megabit was simply asking for confirmation one way or the other.

At this stage of the game I don't think Sony has even got all the bugs out of the 32 bit render.... it's a new introduction and there isn't much in the way of 32 bit footage out there in the first place so I wouldn't expect 32 bit render to be working and viable for a while yet. My point of view anyway.

I think it'll be a very long time before there's any 32 bit footage out there at all, 10bit is fairly common, beyond 12 bit and you're into the cutting edge.

Which is not to say there's not some advantages to using a 32 bit pipeline to avoid some problems even with 8 bit HDV but some of what you think you might be gaining could be an illusion or you could have achieved in 8 bit anyway. Dig up what Glenn has had to say, he can explain it way better than me.

And yes I was primarily interested to see why Megabit was so concerned about this. I've used 32 bit processing once and although I was very happy with what I got I'm pretty certain I was deluding myself that I couldn't have done the same thing in 8 bit.

Bob.

Bob
You're absolutely right (as most of the times :)), with my rather basic editing and HDV input from the V1, there isn't too much I can get from 32bit vs 8bit processing. One thing I like about 32bit is that in preview, it makes the colours more vivid and apparently wider latitude - but in the output video, I can get the same in 8bit, by either applying the Studio RGB -> Computer RGB correction, or by choosing PAL or Component as the video format within the "Advanced Video" properties tab of "Render as..."

Blink3times
Thanks for answering; you're right saying that my concern has been mainly some potential problems in my XP configuration. Because whatever I do (like adding some basic colour correction, or simply turning the Smart Render feature off) - Vegas never renders a 32bit project at full speed... It does under Vista x64, and I think it used to under XP as well - but cannot remember now for sure, as I switched back to XP after a considerable time running Vista only. Since it still uses 100% CPU resources with 8bit projects even under XP, it cannot be a serious problem I'm having, but anyway... Will be grateful for any hints and suggestions.

Cheers,

Piotr

When there are clear advantages to using 32-bit video and when you can't see the difference is a subject that has been beaten to death, made to rise from the dead, and then beaten some more.

Just search for 32-bit,and also 10-bit as they are different subjects.

I have a question for everyone using 32 bit... I had doen some really short 32 bit uncompressed outputs and they worked beautiful... but last weekend I did some color correction for a client and I wanted to output that uncompressed to use it in after effects and my attempt to output the two and a half minute clip worked to about 80% then closed vegas with an error. I redid it and it closed this time at 60% I have done I have redone it several times since then with the same issue. it never stops in the same place and I have hundereds of gigs of free hard drive so that is not the issue, has anyone else seen this? the file outputs if I change the bit depth to 8 bit... I thought it might be that the magic bullet plugin I used in one spot was not 32 bit capable but I removed that and resaved the job and it still has the same issue. the only plugin i am using on the footage is color curves. I removed all of those and it still fails on uncompressed output of the 32 bit project. actually I thought I did this successfully before I updated to v8 pro update a. anyone else out there with this issue? my footage is only SD 720x480.