Kept DTS and 5.0 AC3 - Still VBR max 9000????

[eriksen76]

Strange things happen with this movie.

It has 2 commentaries and 1 DTS (1536 kbit according to Powerdvd) and 1 5.0 AC3 track (224 according to Powerdvd)

When I do the movie from scratch I get a max bitrate in the .ECL file which it set to 9000

This must be wrong, right???

I manually put in a max_bitrate=xxxx line, and set it to apx 8300, save and then run encode. But whasn't this supposed to happen automaticly??

What could the problem be?

I'm using latest build of RB

/Eriksen76

[Rockas]

It would be helpfull to know more details about the source:
- Size
- Structure (how the VTS are distributed and what's on them)



keep it UP

[eriksen76]

Originally posted by Rockas
It would be helpfull to know more details about the source:
- Size
- Structure (how the VTS are distributed and what's on them)



keep it UP

Well, I'm not home at the moment. But if I remember it right. The dvd contained a total of 5 VTS. The main movie was found in the first VTS with 1 pgc only (movie) about 1 Hour 45 Minutes long.

It has the audio tracks as mentioned at top of this thread.
The main movie PGC is apx 4,8 gigs size and the total of the DVD9 is apx 5,5 gigs.

The remaining VTS is some trailers and advertising/warinings.

The menu is 150 mb (is founded in the main movie VTS)

Very strange that it gave me 9000 as max bitrate. I did it from scratch (mounted the image)

Hopefully this info is full-filling.

/Eriksen76

[eriksen76]

I compressed the dvd to 85% of the original size and it only had an average bitrate of 3500 kbit even though the movie was kinda short.

I thought that was kinda strange......

So I took a analysis of the vob files with Bitrate viewer which gave me a max peak of 6046 kbit.

Maby this is what causing the max bitrate to be set to 9000 by default. I mean that the encode does not need high bitrates in order to encode the movie.

Feel free to correct me if I'm wrong

/Eriksen76

[TheSeeker]

I really dont think that the max being set to 9000 will introduce any sort of issues into your video stream. It is odd that the audio and subtitle bitrate wasnt subtracted from that but hey... JDobbs just introduced that fix thinking it MAY help with the audio dropouts issue.

[Rockas]

As long as the result fits on a DVD-5, I don't think you have something to worry about.
You must have checked "Steal Space From Extras" or "Half D1..." (check if you didn't select both), right? So... the maximum quality available was transfered to your main movie... in you case that would take you to the 9000... again... don't worry ... you're movie won't get a better quality than the source :D

keep it UP

[eriksen76]

I did not check any of the mentioned bottons

But I guess I don't have to worry about it, just a strange behavour I think.

Thanx for your time

/Eriksen76

[Sir Didymus]

@Rokas

Hi! :)

Love your approach to the point stated in this thread... It is very pragmatic... :D

Nevertheless, even if the source never hits the muxing limit of 10.08 Mbps, nobody can ensure that the encoder, if told to go up to 9 Mbps Max bitrate, will not reach in some points this value...

IMHO [it's just a random thinking] the issue may be due to the assumption (think I remind some very early post on this subject, but not really sure about), that DTS tracks were removed, automatically or by the user, due to their huge size, so their bitrate may be is not properly taken into account in the complex evaluation of the Max Bitrate values...

Only Jdobbs may comment more precisely about...

Cheers,
SD

[Rockas]

@Sir Didymus
You may be right... but if that's the case... then the resulting "DVD" will be Oversized, won't it?

[eriksen76]

Very very strange, I just watched the movie and it has glitches in the DTS track. Also when I play it on my computer.

It has about 4-5 of them through-out the movie....???

Nothing if I rewind and playback with AC3 track

Could this somehow be caused by the above mentioned. If I reauthor the whole thing with Dvdmaestro its still there. So this is not the typical stutter issue.

/Eriksen76

[Trahald]

easy to test.. just encode it at safe bitrate (max - dts - ac3) and remux it w/maestro. if your standalone has a small fifo and/or a single speed dvdrom, it will have a hard time with streams going over max bitrate.

[eriksen76]

Just tried to playback the DVD9 image, same problem so I guess its hard to solve then :D

/Eriksen76

[jdobbs]

I can't fix and error that is present on the original!!!:D

I truly think you have problems with your player... (previous stutter problems considered) ever think about replacing it?

[eriksen76]

This is not a player issue. My player can't play something right which is already screwed up.

But anyways, I might replace it soon

Thanx for your time

/Eriksen76

[jdobbs]

Your call... but the odds that the original DVD-9 had audio issues isn't very high.