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-   -   Bitrates: Cqmatic starter help please (http://www.digitalfaq.com/archives/encode/7579-bitrates-cqmatic-starter.html)

khusru 01-09-2004 07:34 AM

cqmatic starter help please
 
im new to using Cqmatic, can sum1 tell me what stage of the encoding process i use it and how i use it, im quite familar with the encoding part using tmpg, but never used this to work out the cq, and have been told that the reason why my files are to big is cos i havnt been using cqmatic

Dialhot 01-09-2004 07:40 AM

Do all what you do with TMPGENC as usual but do not launch the encoding process.

Be carreful to reset the source range as said in the message where you can DL CQmatic.

Just save the project (in menu file) as "tmpgenc text project" (that's important) and close Tmpgenc.

Then open CQMatic, load the project, open Calcumatic to compute the average bitrate to use and give this info to CQMatic. Then let it go and it will open tmpgenc byu itself and after some tests, your video will be encoded automatically.

khusru 01-09-2004 07:48 AM

thaks mate il give it a try

khusru 01-09-2004 08:25 AM

i did what u said, but unsure on a cuple of things, on calcumatic is the average bit rate a 0. number eg. on my video it was 0.57, the other boxes were greyed out so i was unsure and that was the only box with a number in it, also do i enter this number as 57,
tmpg did not start up after i put this info in and clicked execute??

Dialhot 01-09-2004 08:34 AM

Quote:

Originally Posted by khusru
i did what u said, but unsure on a cuple of things, on calcumatic is the average bit rate a 0. number eg. on my video it was 0.57, the other boxes were greyed out so i was unsure and that was the only box with a number in it, also do i enter this number as 57,
tmpg did not start up after i put this info in and clicked execute??

Let the 57 where it is, it has an other purpose but personnaly I do not use it.

What you have to do is to load the source (your d2v or your avi), select the audio bitrate (default 128) choose the final target size (CD80, CD90...) and click on "calculate". That computes the avg bitrate that you need to give to CQMatic.

khusru 01-09-2004 08:35 AM

my bad i didnt hit the calculate button, i got the average bit rate which was 1075.8 ( does that sound rite) then enterd this into cqmatic, hit execute waited sum more but it doesnt start encoding

Dialhot 01-09-2004 08:43 AM

Post the log of CQMatic.
(double click in the windows when the work is finished and it will copy the log in the clipboard. Then you can paste it into a message on the forum).

khusru 01-09-2004 09:31 AM

here the log mate

http://www.kvcd.net
CQMatic Version 1.2.06
Copyright Softronex Corporation, 2003.
All rights reserved.
Time: 14:24:56 Date: 01/09/2004
Ready!
Project: C:\Documents and Settings\Khusru Miah.HOMEPC1\My Documents\video\identity\kvcd.tpr

Creating: CQMatic.tpr


Project resolution: 528x576
Execute.
Movie Time: 90
Average Bitrate: 1075
Full Encode mode
Executing Prediction Phase...
Process started at 14:27:29
On 01/09/2004
CQ set for prediction
Setting up initial sampling.
Using CQ of 60.00
Prediction cycle #1
Encoder started...
Process time: 0.00 minutes.
Encoder end.
File size difference = -16512000.000000
Low fence: 60.000000
High fence: 90.000000
Last CQ = 60.00
Current CQ = 75.00
CQ difference = 15.000000
Using CQ of 75.00
Prediction cycle #2
Encoder started...
Process time: 0.00 minutes.
Encoder end.
File size difference = -16512000.000000
Low fence: 75.000000
High fence: 90.000000
Last CQ = 75.00
Current CQ = 82.50
CQ difference = 7.500000
Using CQ of 82.50
Prediction cycle #3
Encoder started...
Process time: 0.00 minutes.
Encoder end.
File size difference = -16512000.000000
Low fence: 82.500000
High fence: 90.000000
Last CQ = 82.50
Current CQ = 86.25
CQ difference = 3.750000
Using CQ of 86.25
Prediction cycle #4
Encoder started...
Process time: 0.00 minutes.
Encoder end.
File size difference = -16512000.000000
Low fence: 86.250000
High fence: 90.000000
Last CQ = 86.25
Current CQ = 88.13
CQ difference = 1.875000
Using CQ of 88.13
Prediction cycle #5
Encoder started...
Process time: 0.00 minutes.
Encoder end.
File size difference = -16512000.000000
Low fence: 88.125000
High fence: 90.000000
Last CQ = 88.13
Current CQ = 89.06
CQ difference = 0.937500
Using CQ of 89.06
Prediction cycle #6
Encoder started...
Process time: 0.00 minutes.
Encoder end.
File size difference = -16512000.000000
Low fence: 89.062500
High fence: 90.000000
Last CQ = 89.06
Current CQ = 89.53
CQ difference = 0.468750
Using CQ of 89.53
Prediction cycle #7
Encoder started...
Process time: 0.00 minutes.
Encoder end.
File size difference = -16512000.000000
Low fence: 89.531250
High fence: 90.000000
Last CQ = 89.53
Current CQ = 89.77
CQ difference = 0.234375
Using CQ of 89.77
Prediction cycle #8
Encoder started...
Process time: 0.00 minutes.
Encoder end.
File size difference = -16512000.000000
Low fence: 89.765625
High fence: 90.000000
Last CQ = 89.77
Current CQ = 89.88
CQ difference = 0.117188
Final CQ value is 89.77
Encoding set to Full encode.
Full encode start...
CQMatic complete!
Total minutes of process: 0.00
Process ended at 14:27:29
On 01/09/2004

Dialhot 01-09-2004 09:45 AM

It seems that you never told to CQMatic where tmpgenc.exe is ! It can't guess it :-)

Click on "Settings" in CQmatic window and give the path to tmpgenc.exe

khusru 01-09-2004 09:52 AM

thanks again pal, il try now, does the bitrate of 1075 seem rite?? do i have to do anything else with the cq value?? it shows it as bein 89

Dialhot 01-09-2004 10:33 AM

1075 is correct for a 109 movie (btw Calcumatic just applies a simple math equation and can't gives wrong answer)

89 ? hum... I guess it is 89.77 and that means that you have a problem.

Be carreful to follow exactly what is recommanded on the CQMatic page. And if it does not work, again post your log.

khusru 01-09-2004 11:49 AM

thanks mate, do i need to do anything with the CQ value? how comes 87.9 is a problem???and does changing the aspect ratio of my out put video to full screen affect my file size

Dialhot 01-09-2004 11:52 AM

87.9 for a 109 min long movie ? in 528*576 ??? It seems very high but not impossible.

Again post your log !

Note: yuou should ALWAYS be in fullscreen if you use an avs script as input.

CheronAph 01-09-2004 11:55 AM

Doesn´t the log say that the movie is 90 minutes long?

khusru 01-09-2004 11:59 AM

iv not been using scripts, only just found out about them, so not tried, il post my next log if i have any problems, is it just two numbers that get entered into CQmatic ( the movie length, and average bit rate)?????
if i use the cq of 87.9 and start encoding do u think itl fir on my cd??

Dialhot 01-09-2004 12:00 PM

Quote:

Originally Posted by CheronAph
Doesn´t the log say that the movie is 90 minutes long?

You're right. Bad memories about an other thread.

khusru 01-09-2004 12:02 PM

the movie im doing now is 90 minutes, did i say it was 109?? if i did im sorry

Dialhot 01-09-2004 12:03 PM

Quote:

Originally Posted by khusru
if i use the cq of 87.9 and start encoding do u think itl fir on my cd??

If it is really 87.9, you can go. It's weird (moreover if you do not use any script) but why not ?

What are the min and max you use ?

khusru 01-09-2004 12:05 PM

what do u mean min and max??

Dialhot 01-09-2004 12:24 PM

ow do you set Tmpgenc ? Manually or you laod a template ? Which template ? And if you do that manually, what is the min and the max video bitrate you set in the video tab of tmpgenc ?


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