Quantcast Bitrates: CQmatic/Calcumatic - Page 14 - digitalFAQ.com Forums [Archives]
  #261  
07-28-2003, 05:49 PM
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Hi Kwag,

Another question, if you got a moment

Quote:
It has to do with the dynamic range in TMPEG. If average bitrate is exactly centered between MIN and MAX, that's excelent for the encoder. In our case, we usually are encoding with a very low average, closer to MIN than to MAX. This throws off the dynamic range of the encoder
If my average bit rate is 1100, for example wouldn't having Min=300 Max=2000, be "centered" better within the encoder's dynamic range than using Min=1100*.57=627, Max=2000?

It just seems (at least to my limited understanding) having the option of being able to encode at a lower bitrate can only help with regards to compression/quality.

Am I over simplifying this

Thanks again
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  #262  
07-28-2003, 06:00 PM
kwag kwag is offline
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Hi Chuck,

If your average is that high, then you don't need the (0.57 * average), because as you said, your average is already equidistant from MIN and MAX
The formula is best used when using average bitrates around ~900 and below, because it "pushes" the CQ curve up because of the higher calculated MIN bitrate.
I still prefer a MAX of 2,000Kbps when using the MA script because I get higher accuracy on prediction ( narrower Min, Max width )

-kwag
  #263  
07-28-2003, 06:21 PM
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I get it now

Thanks again

- now to out what I learned
  #264  
07-29-2003, 12:53 AM
kinggee kinggee is offline
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i can't seem to get CQMatic RC4 to work
tmpgenc just flashes a couple of times for a second and the log says cq is above watermark using cq of 90

RC3 seems to be working fine for me, just wandering if there is a setting i have to change for RC4
  #265  
07-29-2003, 12:57 AM
kwag kwag is offline
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Quote:
Originally Posted by kinggee
i can't seem to get CQMatic RC4 to work
tmpgenc just flashes a couple of times for a second and the log says cq is above watermark using cq of 90

RC3 seems to be working fine for me, just wandering if there is a setting i have to change for RC4
Hi kinggee,

Please check your paths, that you dont have any spaces or strange characters in the paths or the file names.

BTW, RC-5 is up!

-kwag
  #266  
07-29-2003, 01:08 AM
kinggee kinggee is offline
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Quote:
Originally Posted by kwag
Please check your paths, that you dont have any spaces or strange characters in the paths or the file names.
hmm there are no strange characters in the paths

Quote:
Originally Posted by kwag
BTW, RC-5 is up!
will try now thankyou
  #267  
07-29-2003, 01:15 AM
kwag kwag is offline
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What is the full path to your .tpr, and to your output file name in TMPEG

-kwag
  #268  
07-29-2003, 01:51 AM
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Quote:
Originally Posted by kwag
What is the full path to your .tpr, and to your output file name in TMPEG
C:\Documents and Settings\Ben King\Desktop\KVCD ENCODING TOOLS\DogSoldiers.tpr

Output = C:\Documents and Settings\Ben King\Desktop\KVCD ENCODING TOOLS\DogSoldiers.m1v

now everytime i try to predict it gives a negative file size difference after the initial cq of 60 and jumps and stays on cq 90
  #269  
07-29-2003, 01:58 AM
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Quote:
Originally Posted by kinggee
Quote:
Originally Posted by kwag
What is the full path to your .tpr, and to your output file name in TMPEG
C:\Documents and Settings\Ben King\Desktop\KVCD ENCODING TOOLS\DogSoldiers.tpr

Output = C:\Documents and Settings\Ben King\Desktop\KVCD ENCODING TOOLS\DogSoldiers.m1v

now everytime i try to predict it gives a negative file size difference after the initial cq of 60 and jumps and stays on cq 90
Look at your file names

C:\DocumentsspaceandspaceSettings\BenspaceKing\Desktop\KVCDspaceENCODINGspaceTOOLS\DogSoldiers.tpr

and Output = C:\DocumentsspaceandspaceSettings\BenspaceKing\Desktop\KVCDspaceENCODINGspaceTOOLS\DogSoldiers.m1v
  #270  
07-29-2003, 02:02 AM
kinggee kinggee is offline
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ohhhhh so a space is not a normal character

i will fix this up and try again

thanks
  #271  
07-29-2003, 02:05 AM
kwag kwag is offline
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kinggee,

The problem is the way TMPEG stores the file names in the project file. When you use very long filenames and paths, it stores them something like this:

'C:\--== DVD RIPPING ==--\Band Of Brothers 10 Teile\Teil 4\bob4.d' + '2v'

Which of course, is an error for any standard windows program trying to open the file

-kwag
  #272  
07-29-2003, 02:07 AM
kinggee kinggee is offline
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i see

now i understand

thanks for the explanation
  #273  
07-29-2003, 02:08 AM
kwag kwag is offline
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Quote:
Originally Posted by kinggee
ohhhhh so a space is not a normal character
Yes it is
It's a space character

-kwag
  #274  
07-29-2003, 02:51 AM
kinggee kinggee is offline
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its still not working

video source = c:\dogsoldiers\dogsoldiers.avs
output filename = c:\dogsoldiers\dogsoldiers.m1v
tpr path = c:\dogsoldiers\dogsoldiers.tpr

Code:
http://www.kvcd.net
CQMatic Version 1.0 RC-5
Copyright Softronex Corporation, 2003.
All rights reserved.
Time: 17:29:44 Date: 07/29/2003
Ready!
Project: C:\DogSoldiers\DogSoldiers.tpr

Creating: CQMatic.tpr


Execute.
Movie Time: 99
Average Bitrate: 1009
Prediction Only mode
Executing Prediction Phase...
Using CQ of 60.00
Process started at 17:30:03
On 07/29/2003
Encoder started...
Process time: 15.40 minutes.
Encoder end.
File size difference  = -16248719.000000
Last CQ = 60.000000
Current CQ = 90.000000
CQ difference = 30.000000
Using CQ of 90.00
Encoder started...
Process canceled
  #275  
07-29-2003, 02:54 AM
kwag kwag is offline
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Hi kinggee,

Send me your .tpr by PM
  #276  
07-29-2003, 03:24 AM
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Ok, my PC just finished encoding movie...
Result: 781 129 659 bytes
Must be: 683.19 Mb....
Too bad.
The movie was: Half Past Dead, hi-action movie
Average bitrate: 972
MAX - 2000
MIN - 554
Total lenght - 97 min
Source - DVD
Now I cant fit it to cd, even with 112 kbps sound
CQmatic - version RC-3
Now i try to predict with newest (RC-5) version of CQmatic...
  #277  
07-29-2003, 03:51 AM
rhino rhino is offline
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@GetUp:

Was your source DVD in PAL format or NTSC format?

Cheers,
__________________
rhino
  #278  
07-29-2003, 04:16 AM
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Quote:
Originally Posted by rhino
@GetUp:

Was your source DVD in PAL format or NTSC format?

Cheers,
NTSC, film
  #279  
07-29-2003, 05:04 AM
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well curious here :

have an 84 min movie, set min=0.57*avg bitrate and max=2000,
predicted and got an cq of 71,89, took 71.

then i changed min to 270, max = 2000, and well the videostream got 659 mb + audio of 115 mb (192kbit) , after muxing the movie has 785 mb so perfect for 1 cd
  #280  
07-29-2003, 06:42 AM
mistermickster mistermickster is offline
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@Kwag

So, if I want to encode a sample with my script settings and fave template to check the resulting quality, how do I do it?

Also, do the filters loaded in the optimal script come with Avisynth or are they external?

What sort of figures are passed to the Letterbox and GripCrop filters?

Thnx
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