Audio & Video Are Not Synchronized

[Dok]

I had originally posted the following under the section "DVD/MiniDVD Encoding & Authoring," but perhaps it is more appropriate to post it here as I do consider myself a Newbie and I have not receive any responses to date:

"I'm experiencing difficulty converting DVD's with a frame rate of 23.976 fps to DVD-R wihout some sort of synch problem. The typical scenario is the audio will fall further behind the video as the film progresses.

Firstly, I obtain the DVD data (i.e. aspect ratio, frame rate, etc.) from DVD2AVI.

Secondly, I let DVD2AVI create the .d2v and .wav files, using Forced Film and Dolby Digital Decode settings.

Thirdly, I load the 2 files into TMPGEnc and select DVD-NTSC (as there is no selection for NTSC Film), and increase the audio volume under settings. The 3:2 pull down is automatically selected by default and the only other adjustment I make is to select High Quality under Motion Search Precision. I make no changes to the Advanced tab unless I want to Clip Frame. I do not load the default TMPGEnc's settings for DVD-NTSC as I noticed this changes the read-out at the bottom from 23.976 to 29.97 (Perhaps this is my mistake).

Does there exist a step-by-step guide for copying DVD to DVD-R and avoiding the synch issue altogether, or is it basically trial and error.

Any assistance in resolving this dilemma would be greatly appreciated."

I have thoroughly read through the Forum Rules and searched the database for a solution to my problem, but have essentially come up empty.

If I am unknowingly in violation of the Forum's cultural mores, please advise so I can modify my behavior accordingly. Thanks!

[Kb_cruncher]

I think you will find that the solution is to NOT check forcefilm in dvd2avi which will give you a 29.97fps d2v file then choose the dvd-ntsc template in tmpeg with 3:2 pulldown enabled.

because you checked forcefilm in dvd2avi and tmpeg you are essentially doing it twice.

let me know if this works.if not i will try and find a solution.
I love a good problem to solve.

you may have to process the audio on its own in dvd2avi with forcefilm checked then save the d2v file a second time without audio and without force film checked so that u get a audio file @23.976fps

[Dok]

Thanks Kb_cruncher!

I only select ForceFilm in DVD2AVI as per CloneAD's guide to creating a DVD:

"Before I carry on, just a quick word if you are converting an NTSC DVD, example, a REGION 1 DVD (USA). If in the statistics window under 'Video Type' it says 'FILM' or 'FILM 90%' or more, then you must go into the 'VIDEO' menu and in the 'Field Operation' section select 'Forced FILM', this is IMPORTANT!!!!"

I also notice that the film needs de-interlaced if the ForceFilm is not selected, but I will try your suggestions and let you know how it turns out. Thanks again for the feedback.:) :)

[Kb_cruncher]

yes you are correct.if dvd2avi says 90% or more then it is film and you should do a 3:2 pulldown but there is no need to check forcefilm in dvd2avi as you will be doing the 3:2 pulldown in tmpgenc.

but because tmpgenc will produce a 23.976fps movie your audio must be done with forcefilm checked in dvd2avi so that the audio will not be out of synch.once you have done your audio with forcefilm checked, then load your vobs back into dvd2avi and redo them but this time leave forcefilm unchecked and also check no audio in audio properties.this will give you a d2v file at 29.97fps(no audio) that then gets loaded into tmpeg and has 3:2 pulldown done on it which results in a 23.976fps file(and will match your forcefilm audio).

an original movie film is 24fps but when it is mastered for the region 1 market they duplicate 1 frame out of every five which gives you a playback rate of 30(29.97)fps.(this is called telecide)this results in a interlaced movie.
basically what happens with 3:2 pulldown(or inverse telecide) is that duplicated frame is taken back out and in so doing effecivly gets deinterlaced and results in a 24(23.976)fps movie again.

so what you should end up with before you load anything into tmpgenc is:
1x movie.wav(done with forcefilm CHECKED)
1xd2v file((done a second time(overwrite the original)with forcefilm UNCHECHED)and no wav output.

then just load both into tmpeg with 3:2 pull down and you should end up with a movie that's perfectly in synch @ 23.976fps

hope this isn't all too :confused: ing for you.

[Dok]

Thanks for the details. And don't fret about the length. I personally feel that detailed explanations are truly the only effective way of communicating methodologies when it comes to copying DVD's.

I'm currently working on another project but I will certainly put yours to the test within a day or so. Will keep you posted.:)