KVCD: 5823 or 5832 in GOP?
 

Kwag,

in what's happening thread i read:
The new optimized GOP,....... 1-5832-2-1-24
but inside the templates i read:....5823.

what's right?
thanks in advance! :wink:

Re: Kwag,5823 or 5832 in "news dec 23"
 

Typo, Typo, Typo :lol:
The correct signature is 5823 :wink:

-kwag

very nice,thank you!
:)


if HAPPY CHRISTMAS is for family and friends ,

is for all of us here and forum.

i'm confuse if we are friends or family!!! :D

Kwag,please:
what's differences with the old?

changing the "number of P picture in GOP" to 5823
in dvd2svcd script,
after encode,the 5823 turn to 100. :? :?

what more settings i have to change in dvd2svcd script?

thanks!

Hi jorel,

Merry Christmas to you and your family :D

If you use DVD2SVCD, don't put 5823 in the "number of P picture in GOP". Put 12, because 5823 will send DVD2SVCD to the moon ( a Lua :wink: ) and back and give you a crazy result :lol:

-kwag

yes Kwag ,really goes to "lua"! :lol:

in dvd2svcd is right:
file predition factor=0.95 ?
offset CQ value=22?
have more differences?

thanks! :wink:

I don't know how the prediction will work on DVD2SVCD with the new GOP. The new file prediction formula and method we developed is much higher in accuracy than the current prediction in DVD2SVCD.

-kwag

thanks.......
well,
i need to learn how to use the kvcd prediction.
"i'm flying".
i read the posts but need more to understand...
from the begining!
:?

waiting for you and/or muaddib to help me (in portuguese).
:wink:

ps:
i need again the big emoticon for "stupid"! :lol:

Hi jorel,

Here's the manual way to do it. Say you want to put your movie on one CD. First thing you do is find out the size of your audio. That's very easy with HeadAC3he. Just run HeadAC3he and select your demuxed AC3 or WAV file. Select .mp2 as output and the bit rate you want. I usually select either 112Kbps ot 128Kbps, depending on the movie. You'll see the audio size automatically in HeadAC3he. Suppose the audio is 100MB. Just subtract 800 - 100 = 700. The ~800MB is your VCD capacity. So you have 700MB for your video stream, and this is your predicted target file size. Now apply the formula like this:

Predicted MPEG size = (( Total frames/MovieTimeInMinutes)/24) * MPEG sample file size

So say your file has 198673 frames and is 138 minutes long. You would do 198673 / 138 / 24 = 59.98 and then 700MB ( which is your predicted video stream size ) / 59.98 = 11.67MB and that's what your sample size has to be :D. 11.67MB. Now you encode with SansGrip "Sampler()" line at the end of your .avs, and when the encoder finishes, take a look at the sample size. This is what I do to zero in faster on the correct CQ value:

New_CQ_Value = WantedSize(11.67 in this case) / Encoded_Sample_Size * Current_CQ_Value

So say my sample came out to 10.0MB and I was encoding with a CQ value of 25. My new CQ value for the next run is: 11.67 / 10 * 25 = 29.175 So I change the CQ value in TMPEG to 29.175 and encode again. It usually takes 2 to 3 samples to hit your target this way.
Hope this helps :wink:

-kwag

thanks Kwag,
i try and "see if i can do it".
:D
i post a result....... .