Help converting 25P to 24P/60I pulldown stream.

[Darkline]

Sorry if this is in the wrong forum, but its my best guess.

I have a film shot in 25p that has been accepted for an american festival. Currently the submission I have given them is frame blended to 30p. It looks a little strange.

My hope was that I could slow it down a little to 24p. Then encode using pulldown to fit into a 60i stream of NTSC video. This would eliminate the frame blending artifacts.

I have no idea how to do this. If I start in After Effects then I see options to choose pulldown for interpreting footage, but I dont know how to create pulldown from a non-pulldown 25p stream (slow to 24p)

Anyone have any links on this subject or know how to accomplish this?

Thanks

Karl.

[Demistate]

I know that the Cineform Codec capture utility has a file convert utility that will do the 25P to 24P or 23.976 conversion.

However, it can still be done with some of the other utilities that you have. In after effects, or Premiere Pro, you can tell footage to be interpreted as a different frame rate (You might be able to do this in FCP as well, but i'm not sure, since I have not used it since version 3)

So take 25P footage and interpret it as 23.976 or 24P depending on your output source.

You may have to re-sample the audio as well, If you do, just set a speed adjustment on the audio (in Premiere pro, there is a preserve pitch feature as well) to play back at (100.0 * 23.976) / 25.0) (this number does not need to be converted to a percentage, use the calculator to calculate the number and use the most digits possible to be percise.

Here is a guide (that is way more detailed than my post) to help you. http://www.geocities.com/xesdeeni2001/StandardsConversion-Preview-0.html#_From_25p

[Darkline]

Thanks Demistate

I had an idea that I would need to interpret the footage in AE, but my main concern was how to output this. How do I encode a 23.976 AE project to a 60i NTSC file? I know it has something to do with pulldown but thats as much as I know!

thanks again

Karl

[Augustine Arredondo]

If you are on a Mac this is a snap.
You would just output a full res 25p file.
Imprt the file into Cinema Tools and use conform to 24.
That reflags the file as 24p and is extremely clean.
The only downfall is you audio will be slowed down 8% so you will need to take it into Soundtrack Pro and adjust the Pitch.

[Darkline]

thanks, but Im on a PC.

I think cineform has a plugin to do this but it's expensive.