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-   -   Bitrates: CQMatic/CalcuMatic (http://www.digitalfaq.com/archives/encode/4595-bitrates-cqmatic-calcumatic.html)

vhelp 08-09-2003 11:50 AM

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 :eeks:

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

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

kwag 08-09-2003 06:32 PM

CQM Updated to 1.1.07.
Top of this thread.

-kwag

incognito 08-09-2003 07:50 PM

Are you guys having success now with avi conversions?

kwag 08-09-2003 07:54 PM

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

girv 08-12-2003 04:44 AM

I think I've missed something here :oops: - 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 :)

kwag 08-13-2003 01:46 AM

Quote:

Originally Posted by girv
I think I've missed something here :oops: - 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

kwag 08-13-2003 01:49 AM

Version 1.1.10 released!
 
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

ozjeff99 08-13-2003 03:58 AM

Ripper!!!!! :lol:

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%. 8)

No worries Kwag mate. Thanks a million. Feels like a mega-milestone
Cheers
ozjeff99

girv 08-13-2003 04:58 AM

Where does 0.57 come from in "(0.57 * average bitrate)" ?

nicksteel 08-13-2003 07:34 AM

Re: Version 1.1.10 released!
 
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?

kwag 08-13-2003 08:43 AM

Re: Version 1.1.10 released!
 
Quote:

Originally Posted by nicksteel

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

Yes.

-kwag

kwag 08-13-2003 08:52 AM

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

kwag 08-14-2003 09:05 PM

CQMatic Version 1.1.11
 
CQMatic Updated.
http://www.kvcd.net/CQMatic-1.1.11.exe

-kwag

vhelp 08-15-2003 12:44 PM

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 :wink:

* Confirm TMPGE Settings

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

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

Good luck.. TGIF !!
-vhelp

kwag 08-16-2003 01:31 PM

Version updated to 1.1.12a.

-kwag

MrTibs 08-19-2003 07:50 PM

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.

kwag 08-19-2003 08:02 PM

Hi MrTibs,

Was this with HuffYUV :?:

-kwag

kwag 08-19-2003 08:04 PM

Is this correct 8O :arrow: Max bit rate: 905

MrTibs 08-19-2003 09:50 PM

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.

kwag 08-19-2003 10:01 PM

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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