737 change in output

stevehiner

New member
I have a file that is just short of 1 hour 24 minutes. It's in MPEG 2 format recorded in Beyond TV at a bitrate of 2GB per hour. The final edited file is a bit over 2.6GB.

File: Name : C:\Temp\The Time Traveler's Wife.mpg
Size : 2.700 GB
Duration : 01:23:54.28
Mux type : PS - MPEG2
Video: Encoding : MPEG2
VideoStreamID : xE0
Frame rate : 29.97 fps
Encoding size : 720 x 480
Aspect ratio : 4:3
Header bit rate : 4.000 Mbps
VBV buffer : 224 KBytes
Profile : Main@Main
Progressive : Prog or Int
Chroma : 4:2:0
Bit rate : 3.904 Mbps
Captioning : DVD 608
Field order : Top field first
Audio Stream: 1 (Primary) Codec : MPEG
MPEGLayer : Layer 2
Channels : 2.0
PES Stream Id : xC0
Bit rate : 224 Kbps
Sampling rate : 48000
Sample size : 16 bits
The only changes I have mode to the settings in VRD lately are related to MP4 files as suggested in the other thread to try to make MP4 output compatible with BTV.

Today when I added the file above to the DVD burn list and opened the DVD burner I was surprised that it wants a major recode. I see in the output options that the source file is 3.90Mbps and it says the DVD output quality is 9.50Mbps. That makes the output file 6.02GB estimated.

When I click the button to change the output options I find that the Video Options->Bit rate is set to No Change. I can modify that to a lower value and it shrinks the estimated output so it would fit on a single sided DVD but I really don't want a recode. If I then change that setting back to No Change" then it sets the output to 7.07Mbps with an estimated size of 4.53GB. I assume it is trying to fit it only a single sided DVD.

I assume this is not expected behavior. In the past I've been able to burn DVDs without a recode. I believe this is different than the previous version, however, it's been a few months since I burned a DVD so I might have gone through a couple beta versions without using the DVD burner.

I tried it with a different MPEG2 file and the behavior was exactly the same.
 
Last edited:

Dan203

Senior Developer
Staff member
Check all the output options tabs and make sure you don't have the "remember these setting" option checked at the bottom.

If you're just trying to burn the file above, and nothing else, I have no idea why it would want to recode.
 

stevehiner

New member
Nope, nothing is set to remember the settings. That's correct, I drag one of my mpeg2 files onto VRD and try to burn a DVD and it always sets the output bitrate to 9.5 Mbps. The bit rate is certainly set to No Change but it insists on forcing it to 9.5 Mbps.

Can I download older beta versions so I can track down when this started? This is certainly a new behavior but I'm not sure which version introduced it. Should I try older betas or should I compare to the last stable version?
 

Dan203

Senior Developer
Staff member
I just tested this here and I'm not able to reproduce the issue. Does it say it's recoding to 9.5Mbps in the output options list? Or do you only notice it after you author the DVD and see it's recoding?
 

stevehiner

New member
It says it in the options list even though when I look at the options it says "no change".

If I change the DVD output size to a single layer DVD then it changes the bitrate to 7.07Mbps and if I change it to dual layer or folder only then it changes it to 9.5Mbps. I've been using VRD for quite a few years and I've burned a LOT of DVDs but I've never had it do this before.
VRDBitrateIssue.jpg
 

stevehiner

New member
I reverted back to the release version (731) and it behaves correctly. Nothing else on my system or in VRD was changed and these are exactly the same files I was working with in 737. In 731 I add the file to the DVD list and create a DVD and it uses "no change" for the bitrate like it should. I'd test in prior beta versions but I didn't save the install files and I can't find links to them.
VRD731_NoRecodeProblem.jpg
 

stevehiner

New member
Excellent! Thank you.

I switched to the retail version so I guess I'm going to have to keep an eye out for the new beta since its updater won't tell me when the beta comes out.
 
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