@Kwag,

Here's an interesting link from Doom9 where SansGrip started a
post about Psychovisual:

http://forum.doom9.org/showthread.ph...t=psychovisual

-black prince

Now we have to double check that the file prediction is still consistent with this GOP. I'm currently encoding "K-19" with GripFit ( :wink: ) at 528x480 with 1-24-4-1-24 + BETA-1a matrix, so I'll post tomorrow if the predicted/actual size are on target.

-kwag

Kwag,
and for (320 wrong)352x240 lbr? :imstupid:
about matrix,gop,cq or cq_vbr,high quality? :wink:

if my player plays svcds,than should play skvcds? :?
i never do skvcd!

thanks in advance! :wink: :)

editing:
is 352x240!

You mean 352x240 right :?:
The above GOP should apply too. Need more testing. Try it out :wink: It should play SKVCD too. The only difference from SKVCD to SVCD is the resolution, where SVCDs are 480x480 and SKVCD is 352x480 ( Half D-1 resolution, or CVD resolution )

-kwag

I'm currently encoding "K-19" with GripFit( :wink: ) at 528x480 and the test GOP 1-24-4-1-24 + BETA-1 "Notch" Matrix. This is what the movie will look like on one CD-R: http://www.kvcd.net/k-19-small-samp.mpg

-kwag

Kwag wrote:
"You mean 352x240 right :?: "

yes,of course...... :imstupid: :tongue2: :BangHead:

thanks,i try! :)

Hey, don't worry jorel, I do that all the time too :mrgreen:

From Kwag "I'm currently encoding "K-19" with GripFit( ) at 528x480 and the test GOP 1-24-4-1-24 + BETA-1 "Notch" Matrix. This is what the movie will look like on one CD-R: http://www.kvcd.net/k-19-small-samp.mpg"

do you mean BETA-1 or BETA-1a "Notch"?

very good....clear! :)

"do you mean BETA-1 or BETA-1a "Notch"?"
yes, i ask like syk2c11.

Sorry, it's Beta-1a "Notch" Matrix. :imstupid: :lol:

Movie encoded. Final file size was ~4% lower because my sample size was also ~4% lower :x
So ratio is correct and prediction is valid :D

-kwag

Well, I just finished running samples from Death To Smoochy (DVD 16:9 1h49m). Here's what I did:

CQ original GOP original matrix
CQ new GOP original matrix
CQ new GOP beta-1a matrix
CQ experimental GOP beta-1a matrix

and the same combinations of GOP and matrix for CQ_VBR mode.

Result:

The experimental matrix caused a huge drop in CQ level, from 48 for new GOP beta-1a to 39. To be honest it looked like I had dropped the CQ that much, with significantly more Gibbs and blockiness. The artifacts at CQ 48 are barely acceptable (I'm going to do a two-disc encode as well, just in case), but at CQ 39 they're definitely not acceptable for a one-disc encode.

The experimental matrix increases CQ_VBR compression greatly, causing a jump in CQ_VBR level from 7 for new GOP beta-1a to 11. All CQ_VBR encodes looked far worse than the CQ versions.

Overall I prefer the new GOP beta-1a sample. It seems to be about the right balance of compression and artifacts, blocks and Gibbs.

Hi SansGrip,

You mean the 1-12-1-1-24 or 1-24-4-1-24 :?:

-kwag

Sorry... By "experimental" I meant 1-24-4-1-24. By "new" I meant 1-12-1-1-24. I should've been more clear ;).

@Kwag,

Just finished "Signs" using GOP 1-24-4-1-24, Q-Matrix Notch Beta-1a,
and CQ=100. This was for a 2 CD encode + audio. The results were
GREAT!!! 8O :D Flashing was very subtle this time and from 2+ feet
from TV not noticable at all. There was Gibbs, but no worst than using
CQ_VBR. File size was smaller than before (e.g. 1.4GB vs 1.5GB) with
old GOP and Q-Matrix. The picture quality was Excellent!!! :wink:
Gibbs was slightly more noticable than before, but viewing 2+ feet
away from screen it was hardly noticable unless you were looking
for it. I'm encoding another full video with the new GOP and Q-Matrix
to make sure this was not just a fluke. I'll let you know how it
turns out :)

-black prince

Yes :x , I just made a couple of screen shot comparisons with Vdub, and I can see the Gibbs. So back to the drawing board. I won't be satisfied until I find the correct GOP that doesn't "flash" (like 1-24-4-1-24) and no more Gibbs than the reference sample (like 1-12-1-1-24) or any reference sample made with 1-12-1-1-24.
So back to more tests here :roll:.

-kwag

Would experimenting with MPEG-2 do any good as SansGrip said the I-frames would be less blocky? I know it produces bigger files than MPEG-1 but as we've all seen here, it's only a matter of time before the filesize gets shrunk down :idea:

i lost something?

now we are testing
the BETA-1a notch :
8 9 12
9 10 14
12 14 18 :?:

or not?
correct it please! :?

Yes, but the primary focus right now is MPEG-1, so we can target to most standalone DVD players. I assume that for MPEG-2, we're going to wind up with another GOP :roll:. As far as the matrix, it seems to do a good job as it is with MPEG-2 :D
But as soon as we get the MPEG-1 stabilized, which I hope is soon :!: , then we can tackle the MPEG-2 optimizations :idea:

-kwag

Yes, and I think that's the best and final matrix ( for a while 8O ).
Really, I hope we freeze that matrix now, and that will be the new KVCD v2 Q. Matrix. Hopefully it will stay that way for a long time.

-kwag

:D really good Kwag, i do now some more tests with 352x240 lbr!

:wink: