VOB output not in spec

therat

New member
I recorded a Digital TV show using my Fusion HDTV card in .tp format. I the used VRDP v2.1.0.373 to remove the commercials and save in vob DVD format.

My problem is that I can't do anything with the VOB file. I tried to use TMPGenc and dvdlab pro but can't get anywhere. errors keep saying it is out of spec.

I even tried using vobedit t6o demux it and then reauthor it but still the same problem.

How do I use the VOB file to create a DVD?

Is there some way to setup VideoReDoPlus so that the DVD output it within DVD specifications.

cheers

UPDATE: I get the same error but only about bitrate when using the MPV elementary streams output option.
 

therat

New member
Looks like I might have to eat my words. The VOB file does work perfectly with DVDauthor however the resulting DVD that is created is not within spec. It has a max video bitrate of 15000 kbps whereas the allowable max is 9800 kbps.

Also the video GOP is too long.

I will add that th DVD I burned played fine in my standalone player but there were a couple of slight glitches (may be nothing) but audio was perfect throughout.

Because it is a non-standard DVD it might not play in all DVD players.

Dan, is there anyway to limit the max bitrate of VRDP to 9800 kbps please?
 

murrayt

New member
Therat

Not aware of where you are but my experience is in Australia where the broadcasters default the bitrate header to 15Mb/s, which is way beyond the actual average or max bitrate transmitted, and higher that the DVD max of 9800. This may be a standard or at least convention for DVB (I've not been able to establish the reason, just the fact). Some programs like PVAStrumento and Project.X patch the header to a value that is within the DVD standard

But in my experience even leaving the header as is and ignoring the warnings in the DVD authoring step, produces a DVD that plays fine in any player I have tried
 

murrayt

New member
Therat

Not aware of where you are but my experience is in Australia where the broadcasters default the bitrate header to 15Mb/s, which is way beyond the actual average or max bitrate transmitted, and higher that the DVD max of 9800. This may be a standard or at least convention for DVB (I've not been able to establish the reason, just the fact). Some programs like PVAStrumento and Project.X patch the header to a value that is within the DVD standard

But in my experience even leaving the header as is and ignoring the warnings in the DVD authoring step, produces a DVD that plays fine in any player I have tried

EDIT: I've just noted a response in the Support thread where Danr has advised that you can as an option change the saved file's bitrate header, and GOP length if desired !
 

therat

New member
Thanks murray. I'm in Australia as well. as I posted, the DVD I burned plays fine in my standalone dvd player. I just assumed that being out of spec it "might" not play in all players.

I'll check out that reply from Dan.

cheers
 

Danr

Administrator
Staff member
It appears that this has been answered, but just in case: Click on the "Options" button on the file save dialog. The resulting dialog has the parameters you will want to override.

FYI, The DVB broadcast standard specifies an MPEG bit rate header of 15 Mbps. But other than HD material you'll find that the typical actual bit rates are 3-5 Mbps.
 

therat

New member
Thanks Dan. I do have a quesion tho. As many people these days do have HDTV cards these days and record special events, was wondering why in the "Save As" -> Options-> Max Bitrate the option for 9.8 Mbps (the DVD standard) wasn't included.

I know it's minor but it would mean no error messages from other programs that the max bitrate is too high.

Otherwise, it's a fine program.

cheers
 

Danr

Administrator
Staff member
wondering why in the "Save As" -> Options-> Max Bitrate the option for 9.8 Mbps (the DVD standard) wasn't included.
Good question. We will put it on the list, probably change the 10 MB rate to 9.8 Mbps. However, this parameter only changes the MPEG header. It does not reduce the bit rate of the video content itself.

You mentioned HDTV. Regardless of the bit rate, HDTV dimensions exceed the DVD specs. Are you trying to put HD material onto a DVD?
 

murrayt

New member
Dan

Just for "calibration" An edit of BattleStar Galactica broadcast in Australia last night was reported by VRD as 7 Mb/s. Does VRD report max or ave bitrate ?
 

murrayt

New member
Jeez Dan

That was quick !

Must be something about being on opposite sites of the globe

Thanks, I figured it was that. So some SD broadcasts over here run at 7Mb/s ave, That is at least an interesting result
 

Danr

Administrator
Staff member
some SD broadcasts over here run at 7Mb/s ave
That is pretty high compared to the SD broadcasts we have here in the US and from what I've seen from Europe DVB-T.

Its all a matter of economics. Economics for the broadcaster. Here in the US, satellite and cable companies try to cram as much programming as possible into the available bandwidth. That's why they lower the bit rate, especially the satellite operators. Their bandwidth is very finite.

From what I understand some of the sat operators are moving to MPEG4 now since decoder chips have become quite reasonable.
 

murrayt

New member
Dan

Understood

Australia has a highly regulated system whereby commercial broadcasters are not permitted to use multichannelling" and the "National broadcasters (two only) can use multichanneling to a limited degree.

So typically the TS is segmented into an SD channel (576i), a HD channel (576p or 1080i) plus maybe a low bitrate program guide

Not something you would be familair with in the US, so I guess the bandwidthe can be used for slightly higher quality when desired
 

Danr

Administrator
Staff member
therat, I'm intrigued by comment of putting HD material on a DVD. Can you describe the process as well as dimensions of the video? Did you have to do a downconversion?
 

therat

New member
Dan, like murray I am also in Australia. For me the process was as simple as can be.

I use a Fusion HDTV card and I recorded the HD television using the cards own software in .tp format. I then used VideoReDoPlus 374 to edit the commercials and save the file in .VOB format complete with a chapter file. Following the commands in another topic, I used DVDauthor to create DVD Video files. Burned those files with nero.

It's all 16:9, PAL format

Plays fine in my standalone DVD standalone player.

only hiccup was errors during the DVDauthoir oujtput (mentioned in another thread) tho it doesn't sdeem to have affected anything.
 

therat

New member
DanR said:
Still curious. What are the video dimensions of your programme?
Not quite sure what dimensions you mean Dan.

I know it's PAL 25fps 720x576

Is that what you are after?
 

murrayt

New member
Therat

I think you will find that the dimensions you quote are SD not HD, It does make sense as not many if any DVD players will render MP@HL
 
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