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-   -   Bitrates: Well I'm confused (http://www.digitalfaq.com/archives/encode/6863-bitrates-confused.html)

andybno1 11-25-2003 06:03 AM
well I'm confused
 
I chose to use the 120 min 352 x 576 template and the lotr ttt ee d1 and its only 102 mins long and used x3 prediction and I got a cq 44.89 I wasn't hapy so I thought I'd try the x1 prediction see what that brings but that gave me a shockingly low cq of 2.31 whats goin on??? I used a txt tmpgenc template and I used latest script and I have avisynth 2.53 installed I'm confused. (sorry for the long post)

X3 predicition
Code:
http://www.kvcd.net
CQMatic Version 1.2.04
Copyright Softronex Corporation, 2003.
All rights reserved.
Time: 01:47:25 Date: 11/22/2003
Ready!
Project: C:\DVD Movie\LOTR - TTT D1.tpr

Creating: CQMatic.tpr

C:\DVD Movie\LOTR - TTT D1.m1v
Project resolution: 352x576
Execute.
Movie Time: 102
Average Bitrate: 536.3
Prediction Only mode
Executing Prediction Phase...
Process started at 02:01:19
On 11/22/2003
CQ set for prediction
Setting up initial sampling.
Using CQ of 60.00
Prediction cycle #1
Encoder started...
Process time: 28.05 minutes.
Encoder end.
File size difference  = 0.732576
Low fence: 2.000000
High fence: 60.000000
Last CQ = 60.00
Current CQ = 43.95
CQ difference = 16.045444
Using CQ of 43.95
Prediction cycle #2
Encoder started...
Process time: 28.17 minutes.
Encoder end.
File size difference  = 1.010358
Low fence: 43.954556
High fence: 60.000000
Last CQ = 43.95
Current CQ = 51.98
CQ difference = 8.022724
Using CQ of 51.98
Prediction cycle #3
Encoder started...
Process time: 28.10 minutes.
Encoder end.
File size difference  = 0.854119
Low fence: 43.954556
High fence: 51.977280
Last CQ = 51.98
Current CQ = 47.97
CQ difference = 4.011360
Using CQ of 47.97
Prediction cycle #4
Encoder started...
Process time: 28.20 minutes.
Encoder end.
File size difference  = 0.943185
Low fence: 43.954556
High fence: 47.965919
Last CQ = 47.97
Current CQ = 45.24
CQ difference = 2.725170
Using CQ of 45.24
Prediction cycle #5
Encoder started...
Process time: 28.22 minutes.
Encoder end.
File size difference  = 0.977455
Low fence: 43.954556
High fence: 45.240749
Last CQ = 45.24
Current CQ = 44.22
CQ difference = 1.019939
Using CQ of 44.22
Prediction cycle #6
Encoder started...
Process time: 28.05 minutes.
Encoder end.
File size difference  = 1.010005
Low fence: 44.220810
High fence: 45.240749
Last CQ = 44.22
Current CQ = 44.73
CQ difference = 0.509972
Using CQ of 44.73
Prediction cycle #7
Encoder started...
Process time: 28.22 minutes.
Encoder end.
File size difference  = 1.007171
Low fence: 44.730782
High fence: 45.240749
Last CQ = 44.73
Current CQ = 45.05
CQ difference = 0.320759
Using CQ of 45.05
Prediction cycle #8
Encoder started...
Process time: 28.22 minutes.
Encoder end.
File size difference  = 0.988299
Low fence: 44.730782
High fence: 45.051540
Last CQ = 45.05
Current CQ = 44.89
CQ difference = 0.160381
Final CQ value is 45.05
CQMatic complete!
Total minutes of process: 225.23
Process ended at 05:46:33
On 11/22/2003
X1 Prediciton
Code:
http://www.kvcd.net
CQMatic Version 1.2.04
Copyright Softronex Corporation, 2003.
All rights reserved.
Time: 22:30:59 Date: 11/23/2003
Ready!
Project: C:\DVD Movie\LOTR - TTT D1.tpr

Creating: CQMatic.tpr

C:\DVD Movie\DVD.m1v
Project resolution: 352x576
Execute.
Movie Time: 102
Average Bitrate: 536.3
Prediction Only mode
Executing Prediction Phase...
Process started at 22:31:33
On 11/23/2003
CQ set for prediction
Setting up initial sampling.
Using CQ of 60.00
Prediction cycle #1
Encoder started...
Process time: 43.58 minutes.
Encoder end.
File size difference  = 0.629897
Low fence: 2.000000
High fence: 60.000000
Last CQ = 60.00
Current CQ = 37.79
CQ difference = 22.206165
Using CQ of 37.79
Prediction cycle #2
Encoder started...
Process time: 29.78 minutes.
Encoder end.
File size difference  = 0.763503
Low fence: 2.000000
High fence: 37.793835
Last CQ = 37.79
Current CQ = 28.86
CQ difference = 8.938114
Using CQ of 28.86
Prediction cycle #3
Encoder started...
Process time: 28.55 minutes.
Encoder end.
File size difference  = 0.780878
Low fence: 2.000000
High fence: 28.855721
Last CQ = 28.86
Current CQ = 22.53
CQ difference = 6.322916
Using CQ of 22.53
Prediction cycle #4
Encoder started...
Process time: 28.75 minutes.
Encoder end.
File size difference  = 0.788951
Low fence: 2.000000
High fence: 22.532804
Last CQ = 22.53
Current CQ = 17.78
CQ difference = 4.755522
Using CQ of 17.78
Prediction cycle #5
Encoder started...
Process time: 28.73 minutes.
Encoder end.
File size difference  = 0.792488
Low fence: 2.000000
High fence: 17.777283
Last CQ = 17.78
Current CQ = 14.09
CQ difference = 3.689002
Using CQ of 14.09
Prediction cycle #6
Encoder started...
Process time: 28.73 minutes.
Encoder end.
File size difference  = 0.794943
Low fence: 2.000000
High fence: 14.088281
Last CQ = 14.09
Current CQ = 11.20
CQ difference = 2.888896
Using CQ of 11.20
Prediction cycle #7
Encoder started...
Process time: 28.77 minutes.
Encoder end.
File size difference  = 0.796419
Low fence: 2.000000
High fence: 11.199385
Last CQ = 11.20
Current CQ = 8.92
CQ difference = 2.279987
Using CQ of 8.92
Prediction cycle #8
Encoder started...
Process time: 28.73 minutes.
Encoder end.
File size difference  = 0.796288
Low fence: 2.000000
High fence: 8.919397
Last CQ = 8.92
Current CQ = 7.10
CQ difference = 1.816987
Using CQ of 7.10
Prediction cycle #9
Encoder started...
Process time: 28.77 minutes.
Encoder end.
File size difference  = 0.798120
Low fence: 2.000000
High fence: 7.102410
Last CQ = 7.10
Current CQ = 5.67
CQ difference = 1.433834
Using CQ of 5.67
Prediction cycle #10
Encoder started...
Process time: 28.77 minutes.
Encoder end.
File size difference  = 0.797985
Low fence: 2.000000
High fence: 5.668577
Last CQ = 5.67
Current CQ = 4.52
CQ difference = 1.145136
Using CQ of 4.52
Prediction cycle #11
Encoder started...
Process time: 28.73 minutes.
Encoder end.
File size difference  = 0.798973
Low fence: 2.000000
High fence: 4.523441
Last CQ = 4.52
Current CQ = 3.61
CQ difference = 0.909333
Using CQ of 3.61
Prediction cycle #12
Encoder started...
Process time: 28.75 minutes.
Encoder end.
File size difference  = 0.799179
Low fence: 2.000000
High fence: 3.614108
Last CQ = 3.61
Current CQ = 2.89
CQ difference = 0.725789
Using CQ of 2.89
Prediction cycle #13
Encoder started...
Process time: 28.73 minutes.
Encoder end.
File size difference  = 0.799282
Low fence: 2.000000
High fence: 2.888319
Last CQ = 2.89
Current CQ = 2.31
CQ difference = 0.579736
Using CQ of 2.31
Prediction cycle #14
Encoder started...
Process time: 28.75 minutes.
Encoder end.
File size difference  = 0.799177
Low fence: 2.000000
High fence: 2.308583
Last CQ = 2.31
Current CQ = 2.15
CQ difference = 0.154291
Final CQ value is 2.31
CQMatic complete!
Total minutes of process: 418.17
Process ended at 05:29:43
On 11/24/2003

clickit 11-25-2003 07:15 AM
weird !!!

X3 - Final CQ value is 45.05
X1 - Final CQ value is 2.31

if you like do your tests following these steps :

1. delete the old .tpr file
2. recreate the .tpr file with TMPGEnc
3. do X3 prediction
4. exit CQMatic
5. restart from step 1 and in step 3 make X1 prediction
see the 2 final CQ values
these are the right values !!!

Dialhot 11-25-2003 07:19 AM
At the end of the precessing, check the sample that was produced by cqmatic. Open it in wmp and watch till the end to see if there is an error "avisynth caught an error" that appears in the middle of the sample.

Note: you need 28 mintues for ONE test ? What CPU do you have ? Which script ? Which avs version ?

andybno1 11-25-2003 08:23 AM
that 28mins would be me messin with the script, but now I moved back to normal script that was posted by kwag. Also is it best to use the d2v file in the tmpgenc project file or the avs script?

mistermickster 11-26-2003 06:11 AM
Quote:
Originally Posted by andybno1
Also is it best to use the d2v file in the tmpgenc project file or the avs script?
You must use the avs file if you want to use the MA script and all it's wondeful features :D

andybno1 11-26-2003 06:32 AM
well I guess I've been doin i all right then lol just wish I had higher predicted CQ levels lol.


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