Audio/Video Synch...Please help, really simple

[Likwid]

Okay here is my problem,

I have an avi file in divx format but it is in 23.967 FPS. Now to get that DVD compatible I have to convert it to 29.967 My question is how do I do this using nandub / tmpgenc with audio/video in synch. I don't want to use besweet to make an AC3 file because it isn't compatible with some pioneer dvd players. I couldn't find this paticular problem doing search and It's getting very late so I thought I would ask this question. If you could help me I would appreciate it very much. Thanks.

[Innershield]

Load NTSC film in tmpg instead of NTSC.

[bugster]

In TmpGenc, set encode mode to 3:2 Pulldown on playback and set frame rate 23.976 fps (29.976fps internally).

[Likwid]

hmm,

I don't think you understood my question? Let me rephrase so you can better understand as I think I may have confused you. I am trying to get my video synched with my audio. Right now my audio plays behind my video because I changed the frame rate to 29.97. How do I make it so that the video and audio will be synched without using besweet (since ac3 files aren't compatible with using pioneer dvd players). Please help me if you can. Thanks.

[Likwid]

I want to keep the video at 29.97 since I want to burn this to dvd and that is the standard. I just wanted to know how to get the audio to synch up with the video after a conversion such as this.

[bugster]

I do understand what you need, but you are encoding it wrong.

If you do what I suggested, it will be DVD compliant.

3:2 pulldown on a 23.976fps video stream tells the player to play it at 29.976fps by repeating certain fileds/frames in a pattern to achieve 29.976fps playback. This is part of the DVD standard and is the usual method of encodeing 23.976fps material for DVD.

[Gazorgan]

Most DVD's are 23.97 fps. And if your AVI is, then it's from a DVD source(hence the 23.97). Just encode it to mpeg2 and use the 3:2 flag, you will be fine.

Your sync issues are probably from soemthing else (VBR audio?)

[Likwid]

Okay so when I author it using DVD author. Then I add the audio...will it all be synched? And how do I use 3:2 pulldown guess I got some looking to do in tmpgenc. Thanks for your help so far.

[Likwid]

Ah,

I see the pulldown under encode. Now my question to you is....will tmpg dvd authoring program recognize this as a compliant dvd. This is my problem at the moment as I can't author it because it's in 23.97 fps. I want to make it 29.97 fps but the audio goes out of synch so this is my real question.

If I do the pulldown, what do I use for the Framerate right above it...do I put 23.97 since it really is 23.97 and let the 3:2 do its job?. Also what is the 3:2 filter for and I suppose I don't use that? Anymore help is greatly appreciated.

[bugster]

In TmpGenc, set encode mode to 3:2 Pulldown on playback and set frame rate 23.976 fps (29.976fps internally).

Thats what you do in TmpGenc. If you use Tmpgenc to encode video only and add the AC3 audio when you author it should sync fine.

[Likwid]

Ah, you've been so much help. Thank you so much and to whoever has replied. I am encoding now.

[Likwid]

One more question, does this effect the quality of the movie at all. Also on tmpgenc I've been using it for a while and I am confused between advanced and video, I never can figure out which one to mess with if I want a 16:9 video instead of a 4:3.

It kind of looks blocky through tmpgenc while encoding but I guess that will all go away on the dvd player?

Thanks!

[bugster]

Does what affect the quality of the video, 3:2 Pulldown? If anything it should improve the quality as you are encoding less frames per second, so allowing more bitrate for each frame. If it looks blocky the either your bitrate is too low or the source is 'noisy'. In the noisy case you can help a little by using a noise removal filter. The one built into Tmpgenc is quite good but it is VERRRRRRRRRY slow, increasing encode times by several hundred percent in some cases (depending on settings).