Roba sets Q=0 ??

[windtrader]

Never seen anything odd like this before. Roba looks like it is going along fine then jumps to binary search and decides Q=0.

It is way off as you can see and then does a transcode pass.



--------------------------------------------------------
D2SRoBa v3.78, by Tylo
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- WIN_XP - AutoIt 3.0.103.128
- 2005-09-13 09:42:27
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- INI file : C:\Program Files\DVD2DVD\Tylo\D2SRoBa.ini
- Output type : DVD
- CD size : 4464
- Threshold Q : 30
- Sample file size : 1.0% (delete previous: Yes)
- Adjust estimated : 1.2% (accuracy tweak: No)
- Sizing pass : Encode (1 pass) if opv pass < -2.5% from target, or Q > 28
Transcode (Requant) if opv pass > 0.0% above target, and Q <= 28
- Cond. filtering : If configured, and estim. Q reaches above Threshold Q
- Run mode : Normal
--------------------------------------------------------
- Waiting for CCE window, or 'Ripping done' message box...
- Detected a CCE encode window
- Detected the movie encode window - shutting down
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- 2005-09-13 10:03:01
- Copying D2SRoBa.ini to project dir G:\DVD2DVD\
- Avisynth setup: FACAR
- Configured cond. filter: C:\Program Files\DVD2DVD\Tylo\RoBaConditional.avs
- D2S ver. 1.2.2.3, CCE ver. 2.67.0.23
- Setting process priority 0
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- Movie length : 02:05:02 (179877 frames, 23.976 fps)
- D2S audio select : 192 + 0 kbps
- D2S video calc. : 4640 kbps, 1 CDs
- Select ranges : every 1200, select 12 frames
- Sample frames : 1800
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Calculations:
- 1 CD: video_br=4640 (4640) audio_br=192+0 video_sz=4351378878 fill=100% cbr=0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Using num CDs : 1
- Target mpv br : 4640 (max 9000) kbps, size=4351378878 bytes
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Search for Q:
- Sample enc. Q=30 : 5074 kbps, err=9.4%, size=4758403506, sample sz=48194912
- Sample enc. Q=34 : Skipped. Restarting search with cond. filter
- Sample enc. Q=30 : 4064 kbps, err=-12.4%, size=3811237091, sample sz=38601652
- Sample enc. Q=24 : 4761 kbps, err=2.6%, size=4465209884, sample sz=45225336
- Switch to binary search
- Sample enc. Q=0 : 8583 kbps, err=85%, size=8049690048, sample sz=81530308
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- Determined Q : 0 = Round(0 + (85/-1.#IND)) with 1.2% adjustment.
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- 2005-09-13 10:11:30
- Start movie OPV encoding (Q 0)
- OPV pass result: 187% on target, 8678 kbps (8138680940 / 4351378878) Speed: 0.74
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- 2005-09-13 12:59:37
- Executing: "C:\Program Files\DVD2DVD\Tylo\dist\Requant.exe" -level 53.47 -o "G:\DVD2DVD\Encoded_Video_CCE_NTSC.mpv" -i "G:\DVD2DVD\Encoded_Video_CCE_NTSC.oversz.mpv" -auto -close
- Transcoding pass: 100% on target, 4641 kbps (4352516837 / 4351378878) Speed: 6.41
--------------------------------------------------------
- 2005-09-13 13:19:08
- Recover DVD2SVCD: Pulldown
--------------------------------------------------------
- 2005-09-13 14:45:40
- D2SRoBa successfully finished
--------------------------------------------------------

[tylo]

Hi, windtrader. Yes, it shouldn't have decided to switch to binary Q search anyway. I seems to me that I don't reset all conditions when restarting with conditional filter. This is one of the fixes I'll do with d2sroba within the weekend. Cheers.

[windtrader]

Tylo,

Thanks for the reply.

Just curious but in this instance, how much quality of the shrinking steps has been compromised? It seems with Q=0, the first pass does not crunch the video at all and with a larger than original estimate (187%), maybe even creates a larger result. The transcode then does all crunching. Is this right? Does the output of the encode pass create a larger/different/more difficult source for the transcode pass and may even result in less quality than just doing the transcode alone?

thx don

[tylo]

Your analysis is correct - yes to all questions.

[Holomatrix]

Hi, windtrader. Yes, it shouldn't have decided to switch to binary Q search anyway. I seems to me that I don't reset all conditions when restarting with conditional filter. This is one of the fixes I'll do with d2sroba within the weekend. Cheers.
Hey Tylo, did you get the new version fixed?
Thanks

[tylo]

Yep, but it's posted in the beta testers forum only, to be bundled with the upcoming DVD2SVCD 1.2.2 build 4. In any case, I will post it here soon. There were a few other issues to fix as well, you see. ;)