Bitrates: Same CQ value tested more than one time, waste of time ?
I'm currently making a CQ prediction with CQMatic 1.1.06. I'm very suprised about one thing : the same values are tested twice !
Kwag, can't you just memorize the results in an array and avoid to check same value twice ? See my log. Value 79 is used on attempt #1 and #4, and 81.75 on attempt #5 and #8. Quote:
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That shouldn't happen 8O
But yes, you're right, and I just saw it on one of my logs too. It's probably a math rounding error, as it should always close in and never repeat a value. I'll take a look into this today. Thanks Phil :) -kwag |
Here's the update. Thanks for pointing that out Phil ;)
( Stupid math error on my part :oops: :imstupid: ) http://www.kvcd.net/CQMatic-1.1.07.exe Results are the same as in 1.1.06. Except that now, it's even faster zeroing in on final CQ :) Here's my log of 1.1.06 on IceAge: Code:
http://www.kvcd.net Code:
http://www.kvcd.net -kwag |
Just the time to go buy a new 120Go HD and a new CQMatic version is delivered :D. Faster than Fedex :plane: :-)
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Quote:
:D see the results with 1106 here only to check: CQ63,54 Total minutes of process: 45.32 http://www.kvcd.net/forum/viewtopic.php?t=5522 :arrow: now the full log using 1107: http://www.kvcd.net CQMatic Version 1.1.07 Copyright Softronex Corporation, 2003. All rights reserved. Time: 20:44:33 Date: 08/09/2003 Ready! Project: C:\CQMatic\1106.tpr Creating: CQMatic.tpr D:\La Luna\ToK\2\VIDEOPhil1807pred2.m2v Project resolution: 480x480 Execute. Movie Time: 31 Average Bitrate: 1074 Prediction Only mode Executing Prediction Phase... Process started at 20:44:48 On 08/09/2003 CQ set for prediction Setting up initial sampling. Using CQ of 60.0000 Prediction cycle #1 Encoder started... Process time: 6.30 minutes. Encoder end. File size difference = 1.078564 Low fence: 60.000000 High fence: 90.000000 Last CQ = 60.0000 Current CQ = 64.7139 CQ difference = 4.713860 Using CQ of 64.7139 Prediction cycle #2 Encoder started... Process time: 5.93 minutes. Encoder end. File size difference = 0.965295 Low fence: 60.000000 High fence: 64.713860 Last CQ = 64.7139 Current CQ = 62.3569 CQ difference = 2.356930 Using CQ of 62.3569 Prediction cycle #3 Encoder started... Process time: 5.98 minutes. Encoder end. File size difference = 1.076412 Low fence: 62.356930 High fence: 64.713860 Last CQ = 62.3569 Current CQ = 63.5354 CQ difference = 1.178463 Using CQ of 63.5354 Prediction cycle #4 Encoder started... Process time: 6.18 minutes. Encoder end. File size difference = 0.990945 Low fence: 62.356930 High fence: 63.535393 Last CQ = 63.5354 Current CQ = 62.9462 CQ difference = 0.589233 Using CQ of 62.9462 Prediction cycle #5 Encoder started... Process time: 6.17 minutes. Encoder end. File size difference = 1.029791 Low fence: 62.946159 High fence: 63.535393 Last CQ = 62.9462 Current CQ = 63.2408 CQ difference = 0.294617 Using CQ of 63.2408 Prediction cycle #6 Encoder started... Process time: 6.02 minutes. Encoder end. File size difference = 1.008729 Low fence: 63.240776 High fence: 63.535393 Last CQ = 63.2408 Current CQ = 63.3881 CQ difference = 0.147308 CQMatic complete! Total minutes of process: 36.58 Process ended at 21:21:23 On 08/09/2003 :arrow: CQ63,2408 :arrow: Total minutes of process: 36.58 just the same and faster! 8) :plane: |
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