25 fps PAL AVI to 23.976 fps NTSC AVI

[get_thrashed]

I want to bring a PAL AVI down to 23.976 fps NTSC to get rid of the 4% speedup. How would i go about doing this with VirtualDub? Also, since i am going to convert it to MPEG2 and make a DVD anyway, is there anyway i can do the framerate conversion during the MPEG conversion, instead of making an NTSC AVI first? The MPEG encoder I prefer to use is TMPGEnc.

[Cobra]

If you want to convert the framerate, there are a few guides here to help you:

https://www.videohelp.com/convert#4;41

These are to be found along with many other guides on the bar at your left hand side.

Also, do either your DVD player of your TV support PAL? If so, you'd be much better off just creating a PAL disc.

I believe that DVD only supports 29.97fps - see the DVD info section just under the VideoHelp logo (top-left). You may need to perform further corrections to your video, and it will play back faster in NTSC than PAL.

Hope this gets you started,

Cobra

[Poppa_Meth]

this is what I do and its quite easy.
1) Extract audio to wave in VDub. Open the AVI and go to Audio menu. set compression to PCM No Compression. Make sure conversion is set to 16 bit 48000 stereo. Save WAV from the File Menu.
2) Load the AVI into TMPGEnc as video source. select the WAV as your audio source. Set your NTSC DVD settings as you normally would and encode. TMPGEnc will reencode the video to MPEG2 at 29.97 and adust the audio as it goes to match the video. Just make sure to set your output to Elemetary streams with a seperate audio and video stream and set audio output to PCM. You'll end up with a video stream and an audio stream.
3) Run the new audio through FFMPEG GUI to convert to AC3 and mux audio with video in TDA when I author.

[thor300]

Easiest to adjust the framerate in Virtualdub, and then frameserve to tmpgenc. Load the avi, click Video -> Frame rate.. and set Change to : 23.976, then start the frameserver (file menu) and load the vdr file into tmpgenc. After converting, run it through pulldown.exe to make it DVD compliant. But there are many other ways, depends on personal preferences.

[get_thrashed]

I believe that DVD only supports 29.97fps - see the DVD info section just under the VideoHelp logo (top-left). You may need to perform further corrections to your video, and it will play back faster in NTSC than PAL.
Cobra

I thought that many dvds were encoded with 23.976 fps video that the DVD player automatically telecines to 29.97 fps?

[get_thrashed]

Easiest to adjust the framerate in Virtualdub, and then frameserve to tmpgenc. Load the avi, click Video -> Frame rate.. and set Change to : 23.976, then start the frameserver (file menu) and load the vdr file into tmpgenc. After converting, run it through pulldown.exe to make it DVD compliant. But there are many other ways, depends on personal preferences.

If i go this method, how do i slow the audio down to match the framerate?

[thor300]

get_thrashed, look up the "What is -> DVD" on the top left menu here, a 2:3 pulldown is required for a 23.976 clip if you want to put it on DVD. Not a problem anyway, even those who hate commandline programs will find it easy to use pulldown.exe

[thor300]

Oh sorry, i dont know, i dont do audio and video together, and never tried in virtualdub. What i do is to extract audio with virtualdub, then convert it in Besweet. The -ota swith will change the audio "framerate", for Pal to NtscFilm you would use -ota( -r 25000 23976 )

[get_thrashed]

A few more questions, but i'm not sure if they pertain much to conversion:

I used virtualdub and BeSweet and now I have two files, the 23.976 NTSC video only file and the 23.976 NTSC audio file. So now, it's just as simple as loading these two files into TMPGEnc and selecting the correct settings, right? Also, I beleive that this AVI is "true" widescreen and not just letterboxed within a 4:3 frame because when I play it, it opens in a window matching the correct aspect ratio. Plus, AVI Codec tells me it is 2.21:1 (which is strange because i'm sure the original movie was 2.35:1 and it really doesn't look like 2.21:1). If it were simply letterboxed, it would tell me it is 4:3, correct? So when i'm converting it with TMPGEnc, if i set it to 16X9, will it make a widescreen enhanced video that will display properly on my widescreen TV and on standard 4:3 tvs?

If this question is more appropriate for another part of the forum, i will post it there.

[get_thrashed]

When I try to import the resulting video file into TMPGEnc DVD author, it gives me several errors. One of which is that the video framerate 23.976 cannot be used for a standard dvd. Strange, I thought DVD accepted that framerate. Anyone know what is wrong?

[Cobra]

Look at the posts by thor300, particularly his first post. Now go to the top-left of the screen and click the "DVD" tab under the VideoHelp logo. Notice that DVD only supports 29.97fps in NTSC.

You must perform a 3:2 pulldown. This will make an MPEG that is compatible with the DVD format.

Cobra

[get_thrashed]

Okay...I could have sworn that I set TMPGEnc to perform a 3:2 pulldown, so why the heck is the resulting MPEG 23.976?

[get_thrashed]

I tried the 3:2 pulldown with that PULLDOWN.EXE, and it seemed to work except that when I play it back, there is now a green, flickering bar at either the top or bottom of the frame, depending on which player I use.

[get_thrashed]

Oh, yeah, and only about 55 minutes of the 90 minute file were encoded.

[thor300]

Pulldown does nothing to your video, it just set pulldown flags, the green things cannot have come from pulldown, they must have been there in the 23.976 file as well. For the length problem, you must have let out some part in virtualdub, or tmpgenc stopped the encoding for some reason before completed. Did you frameserve with virtualdub or save as avi? And made sure no selection range was set in virtualdub? Just a few wild guesses. Maybe with more info someone could point out a more likely explanation.

[get_thrashed]

Well, it turns out the the MPEG I created from my 23.976 avi was also incomplete. I'll try to reencode it again and see what happens.