Quantcast Bitrates: CQmatic/Calcumatic - Page 22 - digitalFAQ.com Forums [Archives]
  #421  
08-09-2003, 11:50 AM
vhelp vhelp is offline
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aah Rambytes..

also, if you are using the VFAPI route, you could cut the credits out in vdub
and NOT have to worry about the end creadits AND the extra TMPG steps
and things

I'm not saying to NOT use AVIsynth of course, cuase it's GREAT, but I just
haven't gotten the cropping/resizing things nailed yet !!
It's not easy asking simple noob questions, and then a guru is to proud to
answer such questions, and kicks you off w/ a stupdity response
I slowly get my answers, thanks to this forum here. anyways.. just me ranting
about nothing..

But, I like using the VFAPI(psuedo .avi) to vdub route because I have what
I consider THE BEST cropping (for 16:9) encodes around (imo) to my taste.
Anways.. the above is definately something to consider too, if you want to
cut credits or anything 'in between' (specially) using vdub as your server

Be cool dude,
-vhelp
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  #422  
08-09-2003, 06:32 PM
kwag kwag is offline
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CQM Updated to 1.1.07.
Top of this thread.

-kwag
  #423  
08-09-2003, 07:50 PM
incognito incognito is offline
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Are you guys having success now with avi conversions?
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I own a Philips DVD 701. NTSC.
  #424  
08-09-2003, 07:54 PM
kwag kwag is offline
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Quote:
Originally Posted by incognito
Are you guys having success now with avi conversions?
Look at my post here http://www.kvcd.net/forum/viewtopic.php?t=5522

-kwag
  #425  
08-12-2003, 04:44 AM
girv girv is offline
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I think I've missed something here - can someone please explain or link to where the "min-bitrate = 0.57*avg-bitrate ; max-bitrate = 2000" modifcation came from? Whats the benefit of using these settings compared to the regular 300-2500kbps range? Does it apply to non-MA encodes as well?

TIA girv
  #426  
08-13-2003, 01:46 AM
kwag kwag is offline
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Quote:
Originally Posted by girv
I think I've missed something here - can someone please explain or link to where the "min-bitrate = 0.57*avg-bitrate ; max-bitrate = 2000" modifcation came from? Whats the benefit of using these settings compared to the regular 300-2500kbps range? Does it apply to non-MA encodes as well?

TIA girv
Hi girv,

It has to do with TMPEG's linearity range. The recommended MIN is (0.57 * average bitrate) and the MAX is 2,000. That is, if you are using the MA script. If you are not using the MA script, then you must use a higher MAX bitrate (~2,500) to overcome the visible macroblocks on high motion scenes.

-kwag
  #427  
08-13-2003, 01:49 AM
kwag kwag is offline
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CQM updated to version 1.1.10
Grab it at the top of this thread.
And PLEASE, UNCHECK Detect Scene Change in TMPEG before you save your project
That's one reason our prediction is off in some movies.

-kwag
  #428  
08-13-2003, 03:58 AM
ozjeff99 ozjeff99 is offline
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Ripper!!!!!

At long last with a few unsuccessful attempts with CQMatic, I used 1.1.07 on Santana Supernatural Live PAL DVD. Full Screen, Lot's of movement, very low CQ of 38 (still very watchable), interlaced. This was the DVD from hell but CQma"J"ic did its job and put the whole encode with sound to within .5%.

No worries Kwag mate. Thanks a million. Feels like a mega-milestone
Cheers
ozjeff99
  #429  
08-13-2003, 04:58 AM
girv girv is offline
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Where does 0.57 come from in "(0.57 * average bitrate)" ?
  #430  
08-13-2003, 07:34 AM
nicksteel nicksteel is offline
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Quote:
Originally Posted by kwag
CQM updated to version 1.1.10
Grab it at the top of this thread.
And PLEASE, UNCHECK Detect Scene Change in TMPEG before you save your project
That's one reason our prediction is off in some movies.

-kwag
Should "Detect Scene Change" be unchecked during both prediction and encoding?
  #431  
08-13-2003, 08:43 AM
kwag kwag is offline
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Quote:
Originally Posted by nicksteel

Should "Detect Scene Change" be unchecked during both prediction and encoding?
Yes.

-kwag
  #432  
08-13-2003, 08:52 AM
kwag kwag is offline
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Quote:
Originally Posted by girv
Where does 0.57 come from in "(0.57 * average bitrate)" ?
Now I can't find the thread where we came to that percent
I know it's the right balance below average bitrate and a MAX of 2,000, after many trial runs. This may now change, however, with the latest version of CQMatic and the way prediction is done.

-kwag
  #433  
08-14-2003, 09:05 PM
kwag kwag is offline
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CQMatic Updated.
http://www.kvcd.net/CQMatic-1.1.11.exe

-kwag
  #434  
08-15-2003, 12:44 PM
vhelp vhelp is offline
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Hi Kwag..

Quote:
Originally Posted by kwag
Quote:
Originally Posted by girv
Where does 0.57 come from in "(0.57 * average bitrate)" ?
Now I can't find the thread where we came to that percent
I know it's the right balance below average bitrate and a MAX of 2,000, after many trial runs. This may now change, however, with the latest version of CQMatic and the way prediction is done.
.
.
I believe that the MIN = (0.57 * average) formula was derived from
one of the following threads.. however, I believe it may have started
on page 3 of the last thread

* Confirm TMPGE Settings

* File prediction experiment #1,000,000 (pg 5)

* File prediction experiment #1,000,000 (pg 3)

Good luck.. TGIF !!
-vhelp
  #435  
08-16-2003, 01:31 PM
kwag kwag is offline
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Version updated to 1.1.12a.

-kwag
  #436  
08-19-2003, 07:50 PM
MrTibs MrTibs is offline
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I've been testing CQ 1.1.12 on an analog capture. My results seem a bit strange:

My settings:

Movie Time: 117
Average bit rate: 800



My Results:

Final CQ- 2.11 (?)

According to BitrateViewer:

Aveage bit rate: 384
Max bit rate: 905
Min bit rate: 328
Final file size: 466,888

The movie was Chocolat.
  #437  
08-19-2003, 08:02 PM
kwag kwag is offline
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Hi MrTibs,

Was this with HuffYUV

-kwag
  #438  
08-19-2003, 08:04 PM
kwag kwag is offline
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Is this correct Max bit rate: 905
  #439  
08-19-2003, 09:50 PM
MrTibs MrTibs is offline
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The source is an analog capture using HuffYUV, 352x480. The only noise filter used was PixieDust().

Here is the CQ log (as best I can re-type it with my broken kb)


http:\\www.kvcd.net
CQMatich Version 1.1.12a
Copyright....
Time 17:19:28 Date: 08/18/2003
Ready!
Projectc:\chocolat_cq_matci.tpr
Creating: CQMatic.tpr
C:\Avisynth\chocolat_cq_matic.mpg
Project resolution: 352x480
Execute:
Movie Time:117
Average Bitrate: 800
Full Encode mode
Executing Prediction Phase...
Process started at 17:22:17
On 08/18/2003
Setting up initial sampling.
Using CQ of 60.00
Prediction cycle #1
Encoder started...
Process time: 9.13 minutes
Encoder end.
File size difference = 0.023225
Low fence: 2.000000
High Fence: 60.000000
Last CQ = 60.00
Current CQ = 31.00
Prediction cycle #2
Encoder started...
Process time: 90.93 minutes
Encoder end.
File size difference = 0.023703
Low fence: 2.000000
High fence: 31.000000
Last CQ = 31.00
Curren CQ = 16.50
CQ difference = 14.500000
Using CQ of 16.50
Prediction cycle #3
Encoder started...
Process time: 90.52 minutes
Encoder end.
File size difference = 0.023704
Low fence: 2.0000000
High fence: 16.500000
Last CQ = 16.50
Current CQ = 9.25
CQ differnece = 7.250000
Using CQ of 9.25
Prediction cycle #4
Encoder started....

---- this goes on until Prediciton cycle #9-----


As for the max bit rate, yes it says 905 but to be honest, I don't see where it ever hits that. The short lived peak seems to be at the begining and it maxes out at 543. Most of the movie is at about 345.

When I encoded the movie (from a Huffy capture from TV) at a CQ of 100%, the average bit rate was about 1341 with a max of 2432. The final file size was 1,355,977.
  #440  
08-19-2003, 10:01 PM
kwag kwag is offline
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Hi MrTibs,

Verify that you only have "Checked" "AVI VFW Compatibility Reader" in TMPEG. Uncheck ALL other options. Maybe your capture is being read by one of the darn DivX (XviD) CODECS, and that's what's throwing off file reading and proper prediction from your capture.

-kwag
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