DVD Architech won't burn 24p? or will it?

Chris Light

Chris Light

Veteran
...Unless i'm missing something, did i waste my time shooting, editing and rendering out 24p footage for it to burn at 29.976 fps? also, is rendering to uncompressed .avi with Sony's YUV built-in codec a wise idea?...though it won't play correctly in Windows Media Player (not a big issue) the footage looks awesome, but is this a good way to do it, by editing full HD, rendering uncompressed (huge file), and letting DVD Architect compress the movie for DVD?

any pointers would be great (i get so much conflicting info from other forums, so i thought i'd ask fellow vegas users.)

thanks

Chris
 
Use the DVD Architect 24p DVD templates under MPEG-2. If it's HD material, change the render quality setting to Best. If it's SD (including DV), leave it as Good. That will give you a DVD Architect-compliant file.

If it's not compliant, DVD Architect will recompress it. Under File>Optimize Disc>Video 1, you'll see "Recompress Settings." At default, this is set to 29.97. This means when DVD Architect recompresses footage, it will always recompress it to 29.97, no matter what the frame rate of the footage is.

You can change it to 23.976 to make sure you footage gets recompressed to the correct frame rate.

However, the best thing to do is feed DVDA a compliant 24p file. So, do what I mentioned in the first paragraph.
 
David, that is really useful information too - so thanks. I have a related question: Is it possible to produce a 30p DVD. Here's what I did:

1. My source video was shot 720p30.

2. I loaded this into Vegas with project set at HDV 720p30.

3. I rendered using using the stock NTSC widescreen for DVDA, except I changed it to Best because of resampling. I forgot to change from interlace to progressive.

4. I made a DVD in DVDA, no recompression. When I played it on my tv there were a lot of what appeared to me to be interlace artifacts as the player deinterlaced the video.

I then repeated above steps except I changed the Vegas render template to be progressive. I then again created a DVD in DVDA, no recompression. Now when I played it on same tv it looked great. This leads me to believe that DVDA does in fact handle 30p.

Here is what the Sony knowledgebase specifies for avoiding recompression in DVDA:

Compliant NTSC MPEG video:

720x480
Display aspect ratio 4:3 or 16:9
Frame rate 29.97... fps
File cannot have low delay set
36 or less fields in every GOP (group of pictures)
data rate less than 9.8 Mbps

Note that it does not explicitly allow or disallow progressive. I am taking this to mean you could use either. But it would be nice if they listed both, as they have done with aspect ratio.

Over on the Sony forum there was some disagreement as to whether the DVD spec permits 30p. So do you think I actually produced a 30p DVD, or is there something else going on here?


David Jimerson said:
Use the DVD Architect 24p DVD templates under MPEG-2. If it's HD material, change the render quality setting to Best. If it's SD (including DV), leave it as Good. That will give you a DVD Architect-compliant file.

If it's not compliant, DVD Architect will recompress it. Under File>Optimize Disc>Video 1, you'll see "Recompress Settings." At default, this is set to 29.97. This means when DVD Architect recompresses footage, it will always recompress it to 29.97, no matter what the frame rate of the footage is.

You can change it to 23.976 to make sure you footage gets recompressed to the correct frame rate.

However, the best thing to do is feed DVDA a compliant 24p file. So, do what I mentioned in the first paragraph.
Click to expand...
 
Sorry for the redundancy David, but I want to make sure I'm absolutely clear about this:

As long as I change the render quality setting to Best, I'm good? I have a DVDA-compliant 24p MPEG-2 file? Everything else happens in DVDA automatically to output a 24p DVD?
 
kyozoku said:
Sorry for the redundancy David, but I want to make sure I'm absolutely clear about this:

As long as I change the render quality setting to Best, I'm good? I have a DVDA-compliant 24p MPEG-2 file? Everything else happens in DVDA automatically to output a 24p DVD?
Click to expand...

As long as you use the template, yes. You change it to Best because you're in HD and you're resizing the image.

Note -- you'll have to render the audio separately. Do it as AC-3, usually. Give it the same file name and DVDA will bring it in and mate it up automatically.
 
VideoMaker said:
David, that is really useful information too - so thanks. I have a related question: Is it possible to produce a 30p DVD. Here's what I did:

1. My source video was shot 720p30.

2. I loaded this into Vegas with project set at HDV 720p30.

3. I rendered using using the stock NTSC widescreen for DVDA, except I changed it to Best because of resampling. I forgot to change from interlace to progressive.

4. I made a DVD in DVDA, no recompression. When I played it on my tv there were a lot of what appeared to me to be interlace artifacts as the player deinterlaced the video.

I then repeated above steps except I changed the Vegas render template to be progressive. I then again created a DVD in DVDA, no recompression. Now when I played it on same tv it looked great. This leads me to believe that DVDA does in fact handle 30p.

Here is what the Sony knowledgebase specifies for avoiding recompression in DVDA:

Compliant NTSC MPEG video:

720x480
Display aspect ratio 4:3 or 16:9
Frame rate 29.97... fps
File cannot have low delay set
36 or less fields in every GOP (group of pictures)
data rate less than 9.8 Mbps

Note that it does not explicitly allow or disallow progressive. I am taking this to mean you could use either. But it would be nice if they listed both, as they have done with aspect ratio.

Over on the Sony forum there was some disagreement as to whether the DVD spec permits 30p. So do you think I actually produced a 30p DVD, or is there something else going on here?
Click to expand...

30p isn't in the DVD spec. But . . .

It doesn't matter. You'll never be able to tell one way the other no matter what you play it on. If it's 30p in a 60i stream, on a progressive display, the fields will be blended 2:2 with correct field pairs, recreating the 30p frames, so you'll never see interlacing. The file size will be the same whichever way you go, too.
 
But i think the only difference will be that the interlaced video might look slightly sharper than the progressive one ? Is this true David ?
 
No. You won't be able to tell the difference.

If anything, the interlaced video would theoretically look less sharp, but it isn't a factor.
 
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