Will the stutter ever stop?

[Toranaga]

I have been doing Deep Space Nine backups, but they suffer from the audio stutter. It seems to be concentraded on spots with lots of motion (higher bitrate). There is one place in the intro wich allways has stutter. Also there is a place in the intro where the time suddenly goes to zero. If I try to fast forward over the intro it suddenly jumps a good 7 minutes into the episode. Where annoying.

[Rille]

Have also made backups of DS9 with several versions of dvdrb but have no audio stutter in my backups...

[SansGrip]

Originally posted by Rille
Have also made backups of DS9 with several versions of dvdrb but have no audio stutter in my backups...
May be a media problem. Have you tried burning 1x with different media?

If it's not the media it could be a bitrate issue, which is unlikely. If you still have the M2V files from that build, run the problem cell through birate viewer, which should give you an idea of the maximum bitrate of the video. It'll then be possible to roughly figure out the total bitrate of that scene. If it goes over the DVD standard (which is about 10mbps) that could cause issues with one standalone yet not another.

[erdoke]

Originally posted by SansGrip

If it's not the media it could be a bitrate issue, which is unlikely. If you still have the M2V files from that build, run the problem cell through birate viewer, which should give you an idea of the maximum bitrate of the video. It'll then be possible to roughly figure out the total bitrate of that scene. If it goes over the DVD standard (which is about 10mbps) that could cause issues with one standalone yet not another.

I think that RB does not touch audio streams, it uses the original audio when rebuilding. Do you think that setting VBR Bias to a very low value can cause over-standard bitrate?

[SansGrip]

Originally posted by erdoke
I think that RB does not touch audio streams, it uses the original audio when rebuilding.
Yes, but a spike in the video bitrate, combined with the existing audio bitrate (448kbps or whatever) and the bitrate of the subs etc., which exceeds the DVD specification's maximum total bitrate, could cause that kind of stuttering on some standalones.

Do you think that setting VBR Bias to a very low value can cause over-standard bitrate?
It's possible. You'd need to take a look at the video stream in Bitrate Viewer (or similar) to know for sure.

[erdoke]

Originally posted by SansGrip
Yes, but a spike in the video bitrate, combined with the existing audio bitrate (448kbps or whatever) and the bitrate of the subs etc., which exceeds the DVD specification's maximum total bitrate, could cause that kind of stuttering on some standalones.


It's possible. You'd need to take a look at the video stream in Bitrate Viewer (or similar) to know for sure.

OK, I have never run into something like this with CCE, not even with highest bitrate DTS sound and high bitrate movie (though never went under 20 at VBR Bias either).
If I ever experience audio stuttering, will recall this and use Bitrate Viewer.:)

[Toranaga]

Originally posted by Rille
Have also made backups of DS9 with several versions of dvdrb but have no audio stutter in my backups...

Mine are PAL.

[Toranaga]

Originally posted by SansGrip
May be a media problem. Have you tried burning 1x with different media?

If it's not the media it could be a bitrate issue, which is unlikely. If you still have the M2V files from that build, run the problem cell through birate viewer, which should give you an idea of the maximum bitrate of the video. It'll then be possible to roughly figure out the total bitrate of that scene. If it goes over the DVD standard (which is about 10mbps) that could cause issues with one standalone yet not another.

It is not a media problem. I tried using different medias, and my Pioneer DV-545 reads everything without problem. But where do I find bitrate viewer program?

[Toranaga]

Could the problems be related to PAL movies?

[robot1]

Could you try to re-encode the movie with a lower max_bitrate?

[Toranaga]

Originally posted by robot1
Could you try to re-encode the movie with a lower max_bitrate?

Ok, but how do I set the max bitrate?

[erdoke]

Originally posted by Toranaga
Ok, but how do I set the max bitrate?

Take a look at his signature...;)

[robot1]

Originally posted by erdoke
Take a look at his signature...;) There is also an Option in Rebuilder.ini.
See
http://forum.doom9.org/showthread.php?s=&postid=482090#post482090
but I think you probably have to run the prepare step again (in three click mode).
Anyway with RB-Opt or RB-Keeper it's simpler ;)

[Rille]

Originally posted by Toranaga
Mine are PAL.
Mine are also PAL. PLayed them using my Pioneer DV-454 and also my xbox. Since you also have a pioneer player it must be media related or some settings you've made. I've left all settings at standard except passes which i use 4.

[jdobbs]

@Toranaga,

Could you do something for me? If you get audio problems, could you demux the audio from the newly authored disc (the track with which you are having problems) and also from the original and compare the lengths? Totya has reported finding differences -- although I haven't been able to repeat it. It would be helpful to know if anyone else is seeing it -- especiallly when you know you're seen problems.

[lamster]

Hi,

I just discovered that I'm suffering from this problem as well. It appears to be related to the player, not to the media or to PAL movies.

Everything I did had tested just fine on my PC and on my Conia DVD8506B, but now that I'm trying them on a Polaroid DVP-300, just about everything I'm checking is exhibiting "stutter", or audio dropouts.

I'd be happy to do anything I can to help figure this out, but if you're going to say something like, "demux the audio", you're going to have to be a little more specific as to what you want me to do. (E.g., using DVD Decrypter? Is this something I can do from what I have on the hard drive, or do I have to dig out the original discs?)