Rendering question: why would this be? at DVinfo.net

John McCully · February 2nd, 2011, 11:59 PM

I shoot a clip, EX1 at 1080 30p, and pop it on the timeline in Vegas Pro 10. I confirm that it is indeed 1080 30p. I prepare to render as XDCAM (*.mp4) and Vegas is telling me the template that matches my project is =HQ 1920x 1080 60i 35 Mpbs VBR. So I go with those settings and the rendered clip is indistinguishable from the original, at least to my old eyes, but it is about 20% smaller than the original. Re-compression happened, I think.

Then I select the HQ 1920x 1080 24p 35 Mbps template and change the 24p to 29.97p and ‘no re-compression required’ as one might expect.

Why is Vegas Pro 10 encouraging (if that’s the right word) me to render as interlaced?

Oh, I should add I’m viewing the rendered files on a somewhat new top-of-the-line Dell 24” monitor.

Many thanks.

John

Leslie Wand · February 3rd, 2011, 12:16 AM

can't help really as i don't have an ex1 - however, i notice you're in nz. why are you shooting ntsc?

John McCully · February 3rd, 2011, 12:56 AM

Today NZ, tomorrow maybe back to Mexico, or Canada, but does it really matter. My web site is hosted by Bluehost in Utah, USA, and my understanding is that my neighbors HDTV doesn’t care one way or the other and I prefer the look of 30p versus 25p (the EX1 won’t shoot 50p which I might prefer) so what’s a boy to do?

But that’s a different conversation...

Harry Simpson · February 9th, 2011, 08:23 AM

Hi John.

Apologies if this is not the answer but I've had similar problems with Sony Vegas Studio 10 HD where I use the handy use the format of the file adding to the project. Mine are 1080p AVIs after Cineform conversion....The answer I got when asking why it thought mine was 1080i @60 was the program literally cannot tell the difference from the file so it guessed at i instead of p and also therefore sets it to 60.

I always open up in the 1080p 30 template now and forget the set project to file source.

John McCully · February 10th, 2011, 06:38 PM

Thanks Harry, appreciate your comments. Interestingly, a moment ago I went to render a 1080 30p project (clips shot with the EX1) and the template Vegas Pro 10 presented with the = sign was in fact the =HD EX 1920x 1080-30p template which of course makes perfect sense. Go figure!

February 2nd, 2011, 11:59 PM	#1
John McCully Major Player Join Date: Oct 2003 Location: South Island, New Zealand Posts: 609 Images: 2	Rendering question: why would this be? I shoot a clip, EX1 at 1080 30p, and pop it on the timeline in Vegas Pro 10. I confirm that it is indeed 1080 30p. I prepare to render as XDCAM (.mp4) and Vegas is telling me the template that matches my project is =HQ 1920x 1080 60i 35 Mpbs VBR. So I go with those settings and the rendered clip is indistinguishable from the original, at least to my old eyes, but it is about 20% smaller than the original. Re-compression happened, I think. Then I select the HQ 1920x 1080 24p 35 Mbps template and change the 24p to 29.97p and ‘no re-compression required’ as one might expect. Why is Vegas Pro 10 encouraging (if that’s the right word) me to render as interlaced? Oh, I should add I’m viewing the rendered files on a somewhat new top-of-the-line Dell 24” monitor. Many thanks. John Last edited by John McCully; February 3rd, 2011 at 01:22 AM.*

February 3rd, 2011, 12:16 AM	#2
Leslie Wand Trustee Join Date: Mar 2004 Location: upper hunter, australia Posts: 1,410	can't help really as i don't have an ex1 - however, i notice you're in nz. why are you shooting ntsc? __________________ www.lesliewand.com.au

February 9th, 2011, 08:23 AM	#4
Harry Simpson Major Player Join Date: Aug 2009 Location: Nashville, TN. Posts: 581	Hi John. Apologies if this is not the answer but I've had similar problems with Sony Vegas Studio 10 HD where I use the handy use the format of the file adding to the project. Mine are 1080p AVIs after Cineform conversion....The answer I got when asking why it thought mine was 1080i @60 was the program literally cannot tell the difference from the file so it guessed at i instead of p and also therefore sets it to 60. I always open up in the 1080p 30 template now and forget the set project to file source. __________________ Nashville TN using Canon 5D MK3, Canon 550D, RODE SVM mic, 70-200 f2.8L II IS, 24-105 f4L IS, 50 and 85 f/1.8, Vegas Pro 11, Zoom H4n, Blackbird, Lilliput Monitor, Lightroom

February 3rd, 2011, 12:56 AM	#3
John McCully Major Player Join Date: Oct 2003 Location: South Island, New Zealand Posts: 609 Images: 2	Today NZ, tomorrow maybe back to Mexico, or Canada, but does it really matter. My web site is hosted by Bluehost in Utah, USA, and my understanding is that my neighbors HDTV doesn’t care one way or the other and I prefer the look of 30p versus 25p (the EX1 won’t shoot 50p which I might prefer) so what’s a boy to do? But that’s a different conversation...

February 10th, 2011, 06:38 PM	#5
John McCully Major Player Join Date: Oct 2003 Location: South Island, New Zealand Posts: 609 Images: 2	Thanks Harry, appreciate your comments. Interestingly, a moment ago I went to render a 1080 30p project (clips shot with the EX1) and the template Vegas Pro 10 presented with the = sign was in fact the =HD EX 1920x 1080-30p template which of course makes perfect sense. Go figure!