29.97 interlace to 23.976 progressive

[Alex DeLarge]

Are there any tutorials here to acheive this conversion properly, preferably using TMpgEnc or Sony Vegas? I keep getting duplicated frames for some reason.

Any help would be appreciated.

[edDV]

Missing piece of info, is the 29.97 input a telecine source?
If not don't go there.

[Alex DeLarge]

yeah

[manono]

Then for best results you IVTC it using an AviSynth IVTC filter frameserved into your encoder of choice. TMPGEnc has an auto IVTC which can be tripped up, and you can do a manual IVTC if you have a lot of time on your hands. Here's a guide:

http://www.doom9.org/mpg/tmpg-ivtc.htm

But anyone with any sense uses AviSynth's, Decomb, TIVTC, Smart Decimate, etc.

[Alex DeLarge]

The problem is that the source videos don't seem to have visible interlacing at uniform intervals. Eg, sometimes 3 normal frames and 2 interlaced frames and sometimes 2 normal and 1 interlaced.

Will the avisynth solution catch this and automatically adjust for it like TmpgEnc doesn't, because I have alot of clips and can't possibly do them manually.

[manono]

Hi-

Will the avisynth solution catch this and automatically adjust for it like TmpgEnc doesn't, because I have alot of clips and can't possibly do them manually.

Oh, hard stuff, eh? A default setting probably won't. A tweaked setting probably will. If the pattern isn't regular, then it's not a standard telecine. If you have a sample (15 seconds or so of the source, showing steady movement), I and others can have a look and advise you how to handle that particular one, and give you pointers on how to handle others.

And AviSynth has the only IVTC filters that can do this kind of thing without putting in the literally hours and hours per video that a manual IVTC in TMPGEnc might require.