Several High end questions for Guru's.

[Mnemonic]

I checked the guides for maestro and scenarist but did not notice a way to delay audio IE (-180ms) Some of my DVD2AVI AC3 Demuxes have reported up to a -180ms delay and it throws the sync off enough to make it noticable throughout the movie. I have re-encoded over 15 movies now with CCE and it works BEAUTIFULLY!!!!!!!!!!!!!!!! I also have converted 4 SVCDs to DVD with TMPEG and also WORKS BEAUTIFULLY!!! I can say there is no, ONE guide i followed, but experimentation that brought me the best results. I see no need to screw around with IFOedit "AFTER" CCE, just re-author in scenarist or Maestro (Maestro is faster at setting chapters). Same thing with SVCD-DVD. The only problem i have with TMPEG for SVCD is that it degrades the $hit out of the audio! I can extract the MP2 (from original SVCD Mpegs), and convert to PCM 48K in Soundforge (Making one awesome sounding audio file when re-encoded to AC3!) but i have the SAME delay problems.

PS is there a way to get CCE to convert the 480x480 SVCD Mpeg to 720x480 DVD Mpeg? I would really like to use CCE instead, but no re-sizing in CCE.

Thanks! If anyone wants to know my method for CCE DVD, or TMPEG SVCD-DVD please ask.

MnemoniC

[Cayne]

I don't think I'm a Guru, but I will try to help you anyway.
For your audio-problem there is a tool called AC3 Delay Corrector.
Very simple to use just get it at Doom9s.

For converting with CCE you should resize using AVIsynth.
Get some info about it.

[Mnemonic]

I have tried avisynth and CCE 2.64 will not load the avs file. Man i wish they would finish resizing in DVD2AVI!!!!! or add Resizing to VFAPI :) i guess im stuck with slow arse tmpeg for now ;)

[Cayne]

You MUST use Version 2.50 of CCE

or you could resize with TMPGEnc, Save Project and then VFAPI to CCE

[Eyes`Only]

I've searched doom9's downloads for "AC3 Delay Corrector" but I can't find any link to it. Does it go by a different name? I too am having audio delay problems with svcd->dvd conversions.

[Deepa DvD]

When you are in the audio tools click -->show more.Here's a link:AC3 Delay Corrector (http://www.doom9.org/Soft21/Audio/ac3delay_all.zip)

[mikeathome]

Hi,

DON'T TOUCH AC3 Audio ripped from a DVD with any Delaycorrector !!!

It's NOT necessary, rather UNCHECK 'Ignore AC3 Embedded Timecodes' in Maestro General Preferences Settings Dialog.

This will force Maestro to sync align your Audio with video AUTOMATICALLY based on the timecodes in an AC3 stream. This is valid as well for the 'Create Sync Audio Track' function.
DVD w/o timecodes in the AC3 streams are very rare.

This does NOT work when you use your own encoded AC3 or DVB captured AC3 since most often the DON'T contain appropriate timecodes. In these case it's better to ignore them.

This is proven technology, I do this all the time, at least for PAL DVDs.

mike

[TRILIGHT]

Originally posted by mikeathome
This is proven technology, I do this all the time, at least for PAL DVDs.

I can vouch for it on NTSC DVD's as well. There is no need to adjust anything if you've ripped it. (I use SmartRipper with no problems). This also happens to work fine with timelines exported from Premiere. I capture in Premiere (using a Pinnacle DVD1000 card) from my DirecTiVo unit, edit, convert my resulting PCM WAV file to a Dolby Digital AC3 file and author in Maestro. I've never had a need to adjust any delay settings through this particular process either.

[tom para]

can somebody explain why this "AC3 delay" occurs ?

some of the AC3 files I smartripped has a delay as much as 16000ms. Playing it back in spruce shows the video and audio are clearly out of sync.

And yes, I unchecked the "Ignore AC3 timecode" in spruce as well as combination of Creating Sync AC3 and/or Exporting new concatenated mpv.

"AC3 delay corrector" does help somewhat by padding the beginning w/ silence, but not the tail end.

Am also confused b/c 100 % of the time, my AC3 d/o contain timecode aligned to the video. I go with duration and it's been working fine the past 3 years.

thanks for any help,

[benf2]

Your not alone!!!
I put up a thread like this as well...I have 2 movies in particular that no matter what i do, i can't sync the video and audio. That is why i asked if there is any new encryption technique involved.

Joyride and Heist are obviously out of sync even when they show the same time lentgh. I use the same tools u do...smartripper, maestro, and tried both dvd2avi->cce combo as well as flask with the plugin.
Always the same results.

If u figure it out let me know!!

Ben

[TRILIGHT]

Any other titles you've seen it on? I have not done either of those. I've done a number of titles but still have not had the problem y'all have experienced. Let me know if there are any other titles you've seen it on and I'll see if I have them here to test.

[mpucoder]

Seamless branching titles can use gaps to sync the audio to the video when 2 or more branches converge. These gaps are indicated in the NAV Packs (specifically the DSI packet, starting at sector offset 43b, see http://mpucoder.kewlhair.com/DVD/dsi_pkt.html )
I am not aware of any ripping program which converts these to silence. Perhaps they are causing this on certain titles.

[TRILIGHT]

I'll admit I haven't done any seamless branching titles yet. Thank goodness! From all I've heard, they sound like a TOTAL pain in the butt!

[benf2]

MPUCODER...I could not get the link to work...please recheck...thanks

[tom para]

Thanks Mpucoder for pointing out the "seamless branching" possibility, but the titles I had problem with are very ordinary titles and definitely do not use this feature (I'm sure the title publisher/producer would not even know what seamless branching is !).

Strange thing is: there's no sync problem playing back the disc, but ripping it would result in these OUTRAGEOUS delays. (This could be the excellent anti-rip trick of all !)

I tried everything, smartripper, vStrip, DVDdecrypter, cladDVD... the lot. I even tried demux/remux the VOBs. Same results.

anybody had any idea ?

[mpucoder]

@benf - sometimes the server goes down while I'm sleeping, just try again later. Or, for the info pages, you can also use the AOL mirror http://members.aol.com/mpucoder/DVD/