FPS for DVD?

[jcclow]

I'm reauthoring my Family Guy box sets and am so confused with all this FPS stuff. If I'm taking a DVD source and just compressing it to fit on one DVD do I have to change the FPS?

If I'm going to turn it into a VCD, do I have change the FPS?

If it's 23.976 FPS do I have to convert it to 29.97 to burn it to DVD and vice versa.

I'm going to use DoItFastForU along with CCE Basic and DVDLab (or some other reauthoring program).

Thanks!

[DeleriumMDK]

29.97 FPS for NTSC DVD is the standard. Keep them at 29.97FPS otherwise most (probably all) Authoring programs will not accept it. I know TMPGEnc DVD Author won't take a 23FPS MPG.

[cuervo]

Sony's DVD Architect version 2 will now let you encode DVD's with 24 fps.

[jcclow]

besides the obvious difference in size (29 fps is going to be larger than 23), is there any other difference?

[thor300]

There is no difference in size. When encoding 23.976fps with CCE, go to the GOP settings, set it to N=3 N/M=4, then when finished encoding run it through pulldown.exe to have a DVD compliant file.

[adam]

Almost all NTSC DVDs are encoded at 23.976fps. The NTSC and DVD standards, however, require a playback framerate of 29.97fps. So you just encode at 23.976fps and let the DVD decoder telecine it to 29.97fps as it plays. As thor300 said, this requires pulldown flags to be applied, but only for mpeg2 (SVCD or DVD). When you make your VCD you just encode to 23.976fps and the decoder does the rest. Pulldown flags are not necessary, or even supported.

Like I said, almost all NTSC DVDs are encoded at 23.976fps, but tv episode disks are often rare exceptions. You have to preview the vobs in dvd2avi to find out what your source is and encode it accordingly. The process for this is covered in nearly every DVD guide on this site and has been posted on this forum at least 9000 times, so just look it up. DoitFast4u also has an option to do the analysis for you. If you use DoitFast4u in conjunction with DoCCE4u then it takes care of everything.

But for the vast majority of NTSC DVDs, you will encode at 23.976fps.