DVD2DVD audio processing question

[windtrader]

I looked hi and low and could not find the information on how DVD2DVD processes the audio. The log (clip below) shows what happens but not the process doing it. It seems DVD2AVI should demux the audio but there is no DVD2AVI.INI file as it states in the log nor is there any commandline parameters that request the demuxing.

1) What DVD2DVD process/program actually demux and create the "extracted" audio files?

2) What program determines the audio delay?

At least I know BeSweet is used to created the encoded audio files that eliminate any audio delay. :confused:

thx
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- 6/4/2005 3:25:14 PM
- DVD2AVI
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Creating DVD2AVI INI file:
- C:\Program Files\DVD2DVD\DVD2AVI\DVD2AVI.INI

Variable settings:
iDCT_Algorithm: 32-bit SSE MMX

Executing DVD2AVI.
Executing DVD2AVI. Commandline:
"C:\Program Files\DVD2DVD\DVD2AVI\DVD2AVI.exe" -CS=2 -YR=1 -OM=0 -EXIT -OF=[G:\DVD2DVD\DVD2AVI_Project_file] -IF=[G:\king_of_Comedy\VIDEO_TS\VTS_01_1.vob,G:\king_of_Comedy\VIDEO_TS\VTS_01_2.vob,G:\king_of_Comedy\VIDEO_TS\VTS_01_3.vob,G:\king_of_Comedy\VIDEO_TS\VTS_01_4.vob,G:\king_of_Comedy\VIDEO_TS\VTS_01_5.vob,G:\king_of_Comedy\VIDEO_TS\VTS_01_6.vob,G:\king_of_Comedy\VIDEO_TS\VTS_01_7.vob]
Analyzing DVD2AVI Project file
Hybrid Film activated. IVTC will be applied and will slow down the entire process!
Framerate: 29970
DVD2AVI processing done.
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- 6/4/2005 3:30:32 PM
- Free on drive G: 20557.47 mb
- AUDIO Extraction
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Found AC3 stream id: 0x80
Filename: G:\DVD2DVD\Extracted_audio_1.ac3
Found AC3 stream id: 0x81
Filename: G:\DVD2DVD\Extracted_audio_2.ac3

Audio1 delay: 0 ms
Audio2 delay: 0 ms
Audio extraction finished.

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[Nick]

Honest answer, I don't know the ins and outs of this.
It is the case that when DVD2AVI demuxes audio, it puts the delay in the filename. I think DVD2SVCD extracts the audio and calculates delay using some internal routines based upon those from DVD2AVI.

BeSweet is then used to correct the delay in the extracted file

[jsoto]

Yes, D2S uses internal routines to extract the audios and to calculate the delays.

Note the delays can be different if you are using an old DVD2AVI or a new one, because the old versions of DVD2AVI can loose the first two B frames (80 msecs in PAL)

jsoto