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Old 20th January 2004, 10:42   #341  |  Link
m0rtal
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Quote:
Originally posted by Selur
just wondering did anyone try a quantizer ratio of 0.75 for bframes?
quantizer ratio or offset?
I've tried offset 0.75, works just fine!
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Old 20th January 2004, 11:51   #342  |  Link
Selur
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Quote:
quantizer ratio or offset?
like I wrote, I ment ratio
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Old 20th January 2004, 11:53   #343  |  Link
m0rtal
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Quote:
Originally posted by Selur
like I wrote, I ment ratio
then my answer will be "NO"
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Old 20th January 2004, 18:16   #344  |  Link
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I think I do a small PSNR test for tomorrow...

Fixed qunat2 with no BVOP's -VS- Fixed qunat2 with quant2 BVOP's

PS: Has somebody allready tested how cartoon-mode works with real movies ???

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Last edited by Soulhunter; 20th January 2004 at 18:54.
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Old 20th January 2004, 20:21   #345  |  Link
Koepi
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Yes. A year ago (or even longer) sysKin invented a small glitch he called TOO_SMALL_LIMIT.

Overall reaction was:
- Booo! Where are my details?
- Boo! You suck!

and so on.

It's cartoon mode. What do you expect?!?! It won't help quality on "real life footage".

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Old 20th January 2004, 22:22   #346  |  Link
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Quote:
- Booo! Where are my details?
- Boo! You suck!
Should one be frightened of an avatar with such a strong personality as yours?

(Sorry for being off topic!)
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Old 21st January 2004, 03:35   #347  |  Link
mikeX
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talking about avatars and being completely OT i would like to say Teegedeck stole my idea for an avatar
oh well
i guess i'll look for a picture of Harpo
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Old 21st January 2004, 08:49   #348  |  Link
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Quote:
Originally posted by Blue_MiSfit
a palomino core athlon XP (anything before the 2500+)
Actually the palominos topped out at 2100+, and all palomino speed grades were eventually replaced by thoroughbreds anyway.

I hope this line of discussion hasn't become so OT that it gets removed...
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Old 21st January 2004, 09:25   #349  |  Link
Koepi
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Further o/c or hardware discussion can take place in our PC Hard & Software Forum - thanks for not further polluting this thread.

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Old 21st January 2004, 09:32   #350  |  Link
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Well what about my post considering the quality of the b-frames, when using the same quantizer for p- and b-frame? Anyone else tried this?

I did not yet try lower quantizer for b-frame, but when using the same, the quality is nice. Also it takes little less space than using only p-frames, when trying to get best possible quality. I will do tests more soon.

Last edited by begu; 21st January 2004 at 09:34.
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Old 21st January 2004, 10:00   #351  |  Link
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bframes at the same quant as i and p frames shouldn't give an improvement in either quality or filesize.

But of course you have to judge for yourself.

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Old 21st January 2004, 11:23   #352  |  Link
begu
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Ok, I might be wrong.
All I know, that i-frame takes many times more bits than p- or b-frame at same quantizer.

And I was in such asumption, that the b-frame takes less bits than p-frame, when using same quantizer. Ok, I will try look more carefully.
When using virtual dub, there can be seen the video stream info, where the framesize can be seen.

Now, I might just imagine, but I can see from the graph, when there is b-frame. This is because there are for example two to three lower bars between a little higher ones (p-frames).

And when using same quantizer, there are still slightly lower consecutive bars between slightly higher bars (p-frames). But of course I should use statsreader to find out. Sorry or possible mis-information.
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Old 21st January 2004, 11:43   #353  |  Link
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Quote:
Originally posted by Koepi
It's cartoon mode. What do you expect?!?! It won't help quality on "real life footage".
I hoped it could help with moving noise in uniform arears (aka. moving wall texture...) as a stabilizing factor !!!


Ive done some test encodes with qunat2 BVOP's !!!

So far, it looks like this...

"avg. I-VOP size" : 2 = "avg. P-VOP size" : 2 = "avg. B-VOP size"


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Last edited by Soulhunter; 21st January 2004 at 18:54.
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Old 22nd January 2004, 07:21   #354  |  Link
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Quote:
Originally posted by begu
Ok, I might be wrong.
All I know, that i-frame takes many times more bits than p- or b-frame at same quantizer.

And I was in such asumption, that the b-frame takes less bits than p-frame, when using same quantizer. Ok, I will try look more carefully.
When using virtual dub, there can be seen the video stream info, where the framesize can be seen.

Now, I might just imagine, but I can see from the graph, when there is b-frame. This is because there are for example two to three lower bars between a little higher ones (p-frames).

And when using same quantizer, there are still slightly lower consecutive bars between slightly higher bars (p-frames). But of course I should use statsreader to find out. Sorry or possible mis-information.
The thing to be careful of is if you are using packed-bframes then the bframe will actually be in the previous p-frame, and where the bframe should be will be a very small frame.
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