24 fps AVI to DVD issue

[karlh10]

I posted a similar question in the AVI conversion forum. Sorry if I've x-posted.

I have an xvid avi which plays nicely in MS Media player w/ 24 fps. I use Nerovision Express to burn to a DVD, but when I play it on my TV, it appears choppy: an extra frame after every 4 frames. So, it appears that a frame has been duplicated to bring it from true 24 fps NTSC up to 30 fps.

I have Nerovision, VirtualDub, TMPGEnc, TMPG DVD Author, IFOEdit, and a little knowledge of how to use them. I know a standalone DVD player should be able to automatically pulldown the 24 fps for the NTSC television.

So, my questions are: is NeroVision converting the AVI incorrectly to 30fps NTSC, and is there some setting I can make to correct this to 24fps NTSC Film? Should I be using a program like VDub or TMGEnc to first convert the 24 fps up to 30 fps with a pulldown/telecine? (Don't think so).

Thanks for any advice or answers! Tell me how you get 24fps AVIs onto DVD for smooth playback.

[jagabo]

In TMPGEnc (Plus?) encode with the Frame Rate set to "23.976 fps (internally 29.97 fps)".

[karlh10]

Thanks for the response, jagabo!

TMPGEnc-plus is not recognizing the MP3 audio in the AVI, I forgot to mention.

I think I've found a resolution to the problem by using the ConvertXToDVD software. From the automatic settings I saw for my DVD project, it looks like the software is doing the pulldown to bring it up to 29.97 fps. Nerovision, on the otherhand, did not appear to be doing the pulldown on my 23.976 fps AVI, but rendered a 29.97 fps choppy video.

We'll see how it plays when I burn it. If the original video was 23.976 fps non-interlaced, I may not ever get a truly smooth video.

The ideal would have been, like jagabo said, to render it as "23.976 fps (internally 29.97 fps)". So, I'll keep working on this, but for now, I think I have a reasonable solution.

[dadrab]

You can also pull the audio out using VirtualDub, save it as .WAV and put the audio and video back together during authoring. That way you only encode the video in TMPGEnc and can use the "23.976 fps (internally 29.97 fps)" option. Basically, just move the audio out of the way until you're ready for it again.

I do audio in Adobe Audition when I can. It offers a heap of flexability for remixing.

[karlh10]

Thanks dadrab.

Yeah, you are right about splitting out the WAV and then muxing it back later. I can do that (and may) but I always try to first avoid stuff that could bring up an audio sync problem. (Happens a lot for me).

Most of the time, NeroVision is my go-to-software for authoring because I can just add AVIs and get a DVD out of it real easy. Its definitely for novices like myself, but one thing I like about it is that it (converts to and) writes out AC3 soundtracks. I guess Nero has the license for this.

TMPGEnc, OTOH, always seems to want to write out Mpeg1-Layer2? I don't think every DVD player out there supports it. I'm talking about the version of TMPGEncPlus that I have which is from probably 2005. Anyway, just thinking/wondering out loud.

Thanks again for the ideas, dadrab.

[jagabo]

I believe there is an AC3 plugin for TMPGEnc Plus.

[FulciLives]

I believe there is an AC3 plugin for TMPGEnc Plus.

TMPGEnc Plus only does PCM WAV or MP2 ... the so-called plug-in you are probably thinking about is the old plug-in for TMPGEnc DVD Author 1.5x/1.6x

I would just use HCenc and ffmpeggui or Aften for the AC-3 audio encoding.

- John "FulciLives" Coleman