CCE 2.66 VBR has near constant bitrate

[apfraats]

I used CCE SP 2.66 for a few months now, and always saw that the creating of VAF files had a kind of constant bitrate. (so CUURENT-bitrate compares closely to += whatever AVERAGE BITRATE).

I always thought that was normal.

But I've created exactly the same environment on another system even having same mainboard and CPU but used CCE SP 2.67, and what did me really suprise ???

ON THIS SYSTEM THE BITRATE CREATED DURING VAF PASS GREATLY SWINGS !!!

As a result of this, the M2V passes have heavy swings in bitrate....


I have a VBR_BIAS of 0. So wanting FULL VBR.

What should be the case with the VAF FILE ?

Should it have a near to average bitrate constantly or can the current bitrate swings a lot ????

2.66 --> VAF ALMOST LIKE CBR

2.67 --> VAF IS MORE LIKE VBR


What should it be ????

Strange things happens, and this is one of them....

[Guest]

Shit happens, and that's what I have.... Did you forget about forum rule 4: no profanity? I suggest you edit your title before you get struck. It also violates rule 9, by the way.
:readrule:

[spuddog]

Actually I think that (shit happens) would be considered a vulgarity, profanity is when something that is sacred (religious) is treated irreverently or taken in vain. I could give examples, but that would break the rules.

[apfraats]

Actually I think that (shit happens) would be considered a vulgarity, profanity is when something that is sacred (religious) is treated irreverently or taken in vain. I could give examples, but that would break the rules.


Well I got strucked for rule 9 only, just ok. Let's give the moderators something to do too, or they get borred probably and you and give people a strike for in fact nothing essential at all :sly:
(This being a personal opinion and should not be seen as an insult.... :) )

RULE 9: Descibe the contents of youre post.

Yep, sorry, detailed problem desciption not included it was in the thread, it was about 05.00 AM when I wrote it and detected just before the problem, so I was in a really suprised sate of mind. (nobody is perfect..)

Also I asked myself: Where is the profanity and sure the insult ????

By the way,guys, do you ever look movies ???

The sentence I used is NOT vulgarity at all, in normal speaking terms...., it is used a lot in movies and is sure a statement of its own and NO PROFANITY or INSULT !!

Epecially here in holland it's quite a normal term and even used by Politicians.
(saying it in English it's a term of it's own here....., no vulgarity or something like that at all !!!!)

So just hold youre horses...

But it has a litle a self critism and sarcasm included and also ment as a 'Murphy's' way to state a problem. People probably never heard of them....

But some people here are having some strange understanding of speaking language used...., or should I have said 'Live is full of problems, VAF VBR' which is essentially the same, but are more words....(and include a hint on the problem, but you still have to read it, however)

So sorry for that people who just read words, totally out of context, and don't know about commonly known terms, moderators included, they also thought about offending rule 4. (Again this is NOT an insult but a personal opinion).

(and Engslisch isn't my mother's language, so that should be taken into consederation also).

If I say ..... HAPPENS, I just mean the laws of Murphy, and the words shouldn't be taken litterally.......


I consider the strike to be too strict, but however, I will behave and don't use too much generalized titles. I can point out many posts were the title doens't cover the contents of the thread in any way.....
Not just one, but of couple of tens at least...
If I said "Strange bitrate problem" I would probably not have a strike at all...., and even nobody knows were the thread is about. Yep, bitrate.


So people thank you very much (especially Moderators included !), for pointing out things to me. Ik now WILL descibe any way of contents. Even if I have to say "General problem DVD-RB-PRO", which seems to have no general problems anymore however (thanks to JDOBBS :cool: )

Now about the problem , please, which is of lot more importance to me.

I tried a same movie today an the bitrate-distribution is actually much much much better using 2.67.

I have tested this is the only varaible factor, by just replacing the CCE SP executable.

Immedialtely bitrates of the VAF pass were much more fluctuating.....


Know I want to know what's the best and what should be the case with VAF files.

I like to thing 2.67 which produces a lot more VAF VBR like, is better, because black parts now get doen to 0.xx Kbps, and with 2.66 they were just below the average cell bitrate.

Folowwing M2V passes are much more swinning with bitrates then with 2.66 used.

Be warned: I use FULL VBR with VBR_BIAS set to zero.

This was of because my experences with 2.66.

Now I maybe create too much VBR wich can result in overshoot in bitrate and too low average bitrate for less demanding scenes.

Although the bitrate average is lowered (because of compression), the output stream even contains higher spikes than the input stream with VBR_BIAS=0 and 2.67 !!

Anybody on this one, and anybody on the current and average bitrates in the VAF pass ???

Thanks a lot.


(sorry JDOBBS, if this was a problem in some way, maybe also lower average bitrates indeed can result in good quality pictures as you mentioned good/excellent result whith streams of an 2500 average..., this however didn't work for me with 2.66 but maybe it will now..)

[Guest]

Well I got strucked for rule 9 only, just ok. Let's give the moderators something to do too, or they get borred probably and you and give people a strike for in fact nothing essential at all :sly:
Now you're ignoring rule 4: respect the moderator.

[jptheripper]

how many times have we told you not to set the bias to 0

[Carpo]

i have it set to 0 - why should you not have it set to 0 ?

[jptheripper]

its too agressive.. the default is default for a reason

[Fishman0919]

how many times have we told you not to set the bias to 0

Setting the Bias to 0 is FUll VBR... no limit... so setting the bias to 0 will not give you result of anything close to CBR.

[Fishman0919]

its too agressive.. the default is default for a reason


The default is the default because it is a good avg setting...The default is for the avg encoding, med actions and med bitrate.

Lowering the bias is good for high action movie and lower bitrates

[Carpo]

what about if the bitrate is high any way would it make any diff if bias was 0 or default ?

[jptheripper]

i understand there are times to lower the bias

my question is, is there ever a situation where 0 is appropriate?