Quantcast KVCD: Qmatic only Allows a CQ Value of 50 - digitalFAQ.com Forums [Archives]
  #1  
11-08-2003, 06:20 PM
Icarus3000 Icarus3000 is offline
Free Member
 
Join Date: Feb 2003
Posts: 258
Thanks: 0
Thanked 0 Times in 0 Posts
I am currently in the middle of the encoding the new Finding Nemo DVD to KVCD.

TMPGenc hasn't finished its thing yet, but CQMatic is telling me I can only get a CQ value of 50. This seems very low to me! (although in about 8 hours I will know whether it is acceptable or not to the eye )

I am using the optimal MA script.
Size: 480x480
NTSC 23.976

For some reason, I always have to include the line:
ConvertToRGB()
as the last line of all my Avisynth 2.5 scripts. Could this have anything to do with the low CQ?

Has anyone had any success with this movie at higher CQ values?

Many thanks!
Icarus
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Site Staff / Ad Manager
 
Join Date: Dec 2002
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
11-08-2003, 09:05 PM
Dialhot Dialhot is offline
Free Member
 
Join Date: May 2003
Posts: 10,463
Thanks: 0
Thanked 0 Times in 0 Posts
This is a VERY low value even for that movie. Can you give your script ? And the length of the movie ?
Reply With Quote
  #3  
11-09-2003, 08:04 AM
Icarus3000 Icarus3000 is offline
Free Member
 
Join Date: Feb 2003
Posts: 258
Thanks: 0
Thanked 0 Times in 0 Posts
Dialhot:

Results turned out terrible! I think I will try with 2 CDs at 544x480.

This is the script I used:

Quote:


## Defined Variables and Constants ##
#
MaxTreshold = 1.50
nf = 0 # Current frame.
#
####

## Main section and static filters ###
#
Mpeg2Source("D:\My Documents\My Videos\Finding Nemo\Finding.d2v")
#
undot()
Limiter()
asharp(1, 4)
GripCrop(480,480,overscan=1)
GripSize(resizer="BicubicResize")
STMedianFilter(3, 3, 1, 1 )
MergeChroma(blur(MaxTreshold))
MergeLuma(blur(0.1))
#
#

## Linear Motion Adaptive Filtering ##
#
# ( Portions from AviSynth's manual ) - This will apply temporalsoften to
# very static scenes, and apply variable blur on moving scenes.
# We also assign a variable - and this is why a line break is inserted:

SwitchThreshold = (Width<=352) ? 4 : (Width<=480) ? 3 : 2
ScriptClip("nf = YDifferenceToNext()"+chr(13)+ "nf >= SwitchThreshold ? \
unfilter( -(fmin(round(nf)*2, 100)), -(fmin(round(nf)*2, 100)) ) : \
TemporalSoften( fmin( round(2/nf), 6), round(1/nf) , round(3/nf) , 1, 1) ")

#
#
#

GripBorders()
#LetterBox( Your_Values_Here ) # Depends on situation. Use MovieStacker!
Limiter()

#
#
## Functions ###

function fmin( int f1, int f2) {
return ( f1<f2 ) ? f1 : f2
}

#
####
converttorgb()
I also used a GOP value of 15. Is that right?

The movie is 101 minutes long.

Thanks,
Icarus
Reply With Quote
  #4  
11-09-2003, 10:40 AM
Jellygoose Jellygoose is offline
Free Member
 
Join Date: Jun 2002
Location: Germany
Posts: 1,288
Thanks: 0
Thanked 0 Times in 0 Posts
You don't need to use a tighter GOP with Computer Animated movies. Use the standard KVCD GOP of 24 max frames. That'll give you a much better compression and a higher CQ too!
__________________
j3llyG0053
Reply With Quote
  #5  
11-09-2003, 11:42 AM
Dialhot Dialhot is offline
Free Member
 
Join Date: May 2003
Posts: 10,463
Thanks: 0
Thanked 0 Times in 0 Posts
Which audio bitrate do you use ?
Reply With Quote
  #6  
11-09-2003, 01:49 PM
Icarus3000 Icarus3000 is offline
Free Member
 
Join Date: Feb 2003
Posts: 258
Thanks: 0
Thanked 0 Times in 0 Posts
audio: 128
Reply With Quote
  #7  
11-10-2003, 09:36 AM
Icarus3000 Icarus3000 is offline
Free Member
 
Join Date: Feb 2003
Posts: 258
Thanks: 0
Thanked 0 Times in 0 Posts
I hate to be a quitter, but I eventually gave up trying to fit it all on one CD.

Two CDs @ 544x480 with a CQ of 88, and audio of 256 looks and sounds amazing - very hard to distinguish from original DVD!

There is so much detailed animation in this movie that fitting it all on one CD with the same quality is beyond my level of expertise.

Has anyone actually managed to get this movie on one CD? If so, please share your experience!

Thanks,
Icarus
Reply With Quote
  #8  
11-10-2003, 01:35 PM
Deva Deva is offline
Free Member
 
Join Date: Sep 2003
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
I had no probs putting this on 1cd and it looks great aswell. Plus i'll defo watch the film again 'cause i thought it was really good. :P

Heres the details for ya:

File : 812 MB (812 MB), duration 1:40:23, type DSH, 1 audio stream(s), quality 40 %
Video : 697 MB, 971 Kbps, 23.976 fps, res. 352*480 (0.73:1), = MPEG Video, Supported
Audio : 114 MB, 160 Kbps, 44100 Hz, 2 chan., 0x50 = Mpeg-1 audio Layer 1, Supported

Can't remember exactly but i think i had bitrate set to MAX-2300 MIN-300 kbps using a MAF script.

Note, this was not encoded direct from a dvd but from a 1cd avi.

Hope it helps

{code9-sharer}Deva
Reply With Quote
  #9  
11-10-2003, 02:17 PM
Icarus3000 Icarus3000 is offline
Free Member
 
Join Date: Feb 2003
Posts: 258
Thanks: 0
Thanked 0 Times in 0 Posts
Deva:

Can you post your exact script?

Also, what CQ did you end up with?

Thanks,
Icarus
Reply With Quote
  #10  
11-10-2003, 02:33 PM
Dialhot Dialhot is offline
Free Member
 
Join Date: May 2003
Posts: 10,463
Thanks: 0
Thanked 0 Times in 0 Posts
Icarus : note that you used 480x480 and he used 352*480
Reply With Quote
  #11  
11-10-2003, 02:49 PM
Deva Deva is offline
Free Member
 
Join Date: Sep 2003
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Sorry Icarus but i did it a few weeks ago now and cant remember what the cq was. I can tell u i try not to encode anything with less than cq 65.
I dont have the log either, as far as i can remember i used the latest MAF script but just changed it from Temporalsoften to Temporalcleaner.
If i get time i will do another test for u

Deva.
Reply With Quote
  #12  
11-10-2003, 02:58 PM
rhino rhino is offline
Free Member
 
Join Date: Jan 2003
Location: Back in Ireland (for a while)
Posts: 166
Thanks: 0
Thanked 0 Times in 0 Posts


Found Nemo,

Cheers,
__________________
rhino
Reply With Quote
  #13  
11-10-2003, 03:19 PM
Krassi Krassi is offline
Free Member
 
Join Date: Mar 2003
Location: Germany
Posts: 390
Thanks: 0
Thanked 0 Times in 0 Posts
Reply With Quote
  #14  
11-10-2003, 05:57 PM
kwag kwag is offline
Free Member
 
Join Date: Apr 2002
Location: Puerto Rico, USA
Posts: 13,537
Thanks: 0
Thanked 0 Times in 0 Posts
Reply With Quote
  #15  
11-12-2003, 02:38 PM
TheDJ TheDJ is offline
Free Member
 
Join Date: May 2003
Location: UK
Posts: 201
Thanks: 0
Thanked 0 Times in 0 Posts
Reply With Quote
  #16  
11-12-2003, 04:29 PM
Icarus3000 Icarus3000 is offline
Free Member
 
Join Date: Feb 2003
Posts: 258
Thanks: 0
Thanked 0 Times in 0 Posts
Very cute! but seriously, this is a popular movie, there must be someone else out there who tried to back this up on 1 CD?

My 2-CD version looks fantastic, but I'm still curious if anyone was able to get it on one CD with a resolution of 544x480, or would I have to go to 352x480 to make it fit?
Reply With Quote
  #17  
11-12-2003, 05:04 PM
nicksteel nicksteel is offline
Free Member
 
Join Date: Nov 2002
Posts: 863
Thanks: 0
Thanked 0 Times in 0 Posts
I used SKVCD 352x480 and optimal MA template on one cd with 128 mp2. Results were very good. I don't remember CQ, but it was adequate.
Reply With Quote
  #18  
11-13-2003, 06:14 AM
GFR GFR is offline
Free Member
 
Join Date: May 2002
Posts: 438
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Jellygoose
You don't need to use a tighter GOP with Computer Animated movies. Use the standard KVCD GOP of 24 max frames. That'll give you a much better compression and a higher CQ too!
That is generally true but... Most of this movie takes place underwater... Even if it's computer generated water that's not the easiest thing to compress.
Reply With Quote
  #19  
11-13-2003, 11:07 AM
Jellygoose Jellygoose is offline
Free Member
 
Join Date: Jun 2002
Location: Germany
Posts: 1,288
Thanks: 0
Thanked 0 Times in 0 Posts
I'm the last one to say that underwater scenes are easy to compress
However that will not change the fact that a tighter GOP with this movie will not be of any help!
__________________
j3llyG0053
Reply With Quote
  #20  
11-26-2003, 05:23 AM
gamma gamma is offline
Free Member
 
Join Date: Nov 2003
Location: Rotterdam (The Netherlands)
Posts: 237
Thanks: 0
Thanked 0 Times in 0 Posts
hi,

I've gotten it on one 90min CD, file was 930 MB audio 128 kbps, video
mpeg2 480x576, 25 fps (pal), cq 63, max bitrate 2100.

The quality is the same as the source, but the source video wasn't really great quality. But the result is satisfactory....

It isnt a very high cq value, but the movie is difficult to encode due to the water-scenes...
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
HCenc: HC-Qmatic Prodater64 Video Encoding and Conversion 32 01-19-2007 04:30 AM
QMatic et projet Tmpgenc *.tpr pedroxx Conversion et d'Encodage de Vidéo (Français) 4 11-21-2004 11:17 AM

Thread Tools



 
All times are GMT -5. The time now is 03:55 PM  —  vBulletin © Jelsoft Enterprises Ltd