How to transcode 30fps to 24fps

[LC1104]

This may be a dumb question, but I have been trying to transcode an MPEG-2 clip which is 30 fps to Quicktime AVID OMF format in 24 fps. I am currently using Cleaner 5.1.1 (I hate this buggy program but I don't know what else has this capability). The problem that I have is that the final OMF clip comes out jerky and stutters often - I realize this is becuase I am going from 30 to 24 fps. I have inverse telecine enabled. Any advice on how to do this better?

I am working on a Dell Precision:
dual P3 1Ghz
512 MB Ram
Matrox G450
20GB system; 500GB Videoraid SCSI

Thanks so much for your help guys.

-jason

[dZeus]

if (parts of) the source has been shot on video or edited on video during the process of mastering/etc it, then ivtc will always be 'imperfect', as you will see stutter during panning which weren't there in the original, even when you play back the 24-fps-ivtc-ed result with 3:2 pulldown.

Maybe this is the cause in your case?

[Sciascia]

TMPGEnc has a pretty good inverse telecine tool as well as DVD2avi.

I was under the impression that OMF files were only able to be created on AVID systems, using their HW for compression. I assume that you are using a SW codec for it (let me know if I am right /wrong here), just wondering how good it is? This would be very helpful for converting and transferring files from AVID Media Composers, the Newscutters to the AVID Airplays.

[LC1104]

I am using a Quicktime codec that enables Avid OMF compression. So the output files are .mov files but encoded with the avid mjpeg schematic. I am using Windows 2000 and Cleaner 5.1.1 to do this. The one problem with this though is that these files play at half the frame rate - I don't know if this is a Windows 2000 problem (as many videos play horribly with a lot of stuttering on the 2000 system but then play fine on the XP system that I have).

Off this topic, I have another question. Does anyone know where I can get a very good source clip that is uncompressed, 720x480? I tried just capturing from my WinTV card but the noise makes the picture so unclear. My next best option would be to rip a DVD. My goal is to now encode to MPEG-2 (I realize if I went the DVD route, it would be reencoding MPEG-2) with two different settings, 4:2:2 and 4:2:0 and compare the difference. If I do choose to use a DVD clip as a source, should I rip it, say using smart ripper or would it be better to capture it through s-video. If you do have a good uncompressed source you can send me - it only has to be a few seconds long at the most - I would be very grateful.

jason