tmpeg framerate problem

[vandakeg]

I'm trying to convert an xvid file (23.976 fps), but everything I've tried has resulted in jerky playback. I'm trying to convert to NTSC DVD format. I couldn't find a guide or any posts directly relating to this. Can anyone help me?

[bugster]

Encode to DVD format except use a framerate of 23.97 fps to match the source, do video only and you will end up with a .m2v file. Now use pulldown.exe (available from the tools section, there is a GUI available too) and run your .m2v file through this. Use this output as the source for your DVD authoring program.

Hope this helps

[vandakeg]

I am encoding at 23.97 in the dvd template.
I have tried:
CBR 3000,4000, and 8000 w/ dc offset of 8,9 and 10
VBR 2-pass and auto w/ average bitrate of 3000, 4000, and 6000 w/ dc offset of 8,9 and 10
I have tried all these settings with motion search precision set to each of the selections.
NOTHING has resulted in smooth playback, which is why i believe it needs some sort of framerate conversion. the quality of the video is fine... it's the jerkiness that's unacceptable.

[bugster]

Ok, are you SURE the source file is 23.97fps. Can you describe the jerky playback in a little more detail. Does it jerk slightly approx 1/second or longer jerks less often?

[BoogieMan]

Bugsters method should work just fine, that is what I have found works best for my Xvids. CBR and all that stuff doesnt seem to have any effect at all for jerkiness. I found it is actually TMPg or CCE's framerate conversion that seems to cause jerkiness to mine. So leave frame rate alone(23.97), encode, then run pulldown on m2v file.

BoogieMan

[vandakeg]

what settings do you use for pulldown.exe? do you use:
pulldown source.m2v target.m2v -drop_frame true? thanks for hte help? I'm going to give this a try, but i don't see how it will work if the source.m2v is jerky already.

[vandakeg]

will the jerkiness stop once i burn to dvd.. b/c the output file from pulldown.exe was just as jerky as the input.

[wipeout]

Yeap, I get the same problem. I dont know if inverse telecine will work.




I also tried to use a different codec and adjust Enviormental settings under TMPGenc.

[vandakeg]

I also tried inverse telecine w/ no luck.

[puertorican138]

I'm trying to convert an xvid file (23.976 fps), but everything I've tried has resulted in jerky playback. I'm trying to convert to NTSC DVD format.

Have you tried using 3:2 pulldown when playback as it is used when your source framerate is 23.976fps???

3:2 pulldown when playback:

This is used when you have a FILM source movie (23.976fps), to leave it at 23.976fps but have your decoder play it back at 29.97fps (works great for ripping DVDs). When 3:2 pulldown when playback is used it does this.. It takes four sequential video frames (A, B, C, D) from the FILM and are drawn on the video display as A1, A2, B1, B2, C1, C2, D1, D2, where the 1 or 2 represents the field number within the frame.

Hope That Helps!!! :P

[vandakeg]

Unfortunately, i tried that as well.. i believe '3:2 pulldown when playback' is actually checked automatically... and i have tried it both ways...

i have spent all day on this, trying every conceivable option, but it just doesn't seem to be working... maybe it's something obvious?? I used virtual dub and made a clip of the very beginning credits (which has a lot of motion), and this is the clip i've been using for all my tests.

i want to thank all you guys for your continued help... hopefully it's just something obvious that i'm overlooking.... should i maybe try converting the xvid file to divx? or maybe even huffy? (i have 150gb free space... which should be enough).. but i didn't think that'd help if it was a framerate problem.

[DoblANy]

To dubbel check the frame rate get GSpot and read the guide over at Doom9.net this will confirm it.

Also have you tried CCE?

I have converted Xvid's with CCE with superb success.

Good Luck
Dob

[flaninacupboard]

i had an xvid of "about a boy" which was 23.976 fps, and when i loaded it up in tmpgenc, it set the output frame rate to 23.976fps, which seemed fine. however, when i opened the source range window, it showed the time at the top and reported the file as being 29.97 fps. i tried a few things to make tmpgenc read it right but to no avail. my suggestion is to do as you say and convert to huffyuv (it's lossless afterall) in virtual dub, and try with that file. i don;t think frameserving is an option on this one, as the served file will be read wrong anyway.
in the end i gave up and went and bought the DVD. shock! horror!

[nkuperw]

Hi, I've been trying to encode a bunch of avi's (samurai jack tv episodes; source is 23.97 fps) to make a DVD using tmpenc and my problem occurs when I try to multiplex the resulting m2v file with the audio. I multiplex using ifoedit to make vobs and then watch with powerdvd to check on the quality. If I make a wav audio file and multiplex, I get the video flying by about 4 times faster than the audio. However, I mux compressed audio with the m2v, it works fine. I think that jerkiness may come from a combination of authoring problems and audio source problems when the muxing occurs.
I guess I havent offered any answers either, but I've been bashing my head the last couple of days trying to figure out what I cant mux wav audio and get a good result.

[vandakeg]

The audio in my xvid file uses some codec that no program seems to be able to accurately decompress. I've tried in Vdub, Tmpgenc, and Adobe Premiere... also, when I check the file info, it says that the audio compression is 'unkown (tag 2000)'
The only thing i've gotten to work is using Instant CD+DVD, then using the InstantVideo option to process the video.. this acutally works fairly well, but the video quality is not what I want, not even close to what tmpgenc can give.
I can get smooth video from InstantVideo, and quality from Tmpgenc... but i can't get both from either... i'm getting frustrated!

[bugster]

also, when I check the file info, it says that the audio compression is 'unkown (tag 2000)'

This, I think, is AC3 audio, even if it is only two channel. What you do here is save it out from the avi using vdub, direct stream copy. This will create a movie.wav file which you then rename to movie.ac3. Unfortunatley vdub puts a wav file header on so you must fix this using ac3fix.exe (a command line tool from the tools section). Once you have done this you can convert it to wav, or mp2 or almost anything using HeadAc3he, again available from the tools section.