if you don't need sound, interpret as 29,97 .

it will speed up but image will remain perfect

2013/12/13 Chris Zwar <chris@chriszwar.com>

Sorry to sound like a pedant but that's not PAL or NTSC.  Those terms refer to the old analogue system.  Incidentally, analogue TV has just stopped broadcasting here in Australia so I suppose it's no longer correct to refer to us as a PAL country.  Using the digital terminology, PAL is (was) 720x576, 50i and NTSC is 720x486,59.94i.

You have HD comps.  There is no PAL or NTSC with high def, just different frame sizes, frames rates, and either progressive or interlaced.

You've said that you have a 1920x1080 "PAL" comp - does that mean it's 25p or 50i?  And you want it to be NTSC - again, you actually have a few frame rates to choose from - 29.97 and 30 progressive, and 59.94 or 60 for interlaced.

The easiest way to do it is just import the clip into After Effects and ensure it is interpreted correctly (frame rate and fields).  Then drop it into a new composition that has the new settings you want (e.g. 1920x1080, 29.97).  After Effects will take care of the conversion and you just have to render it out.

This probably won't give you the best results though.  The next step is to turn on frame blending.  Try both settings and see if the pixel-motion setting works without artefacts.  If that doesn't work too well then split the clip at each edit point, and use the time warp effect - adjusting the parameters for each clip.  And finally, if that doesn't work too well then try a 3rd party product like twixtor.  Don't expect Twixtor to do a better job that After Effects without you doing some manual adjusting for each shot though.

You might have to split the clip at each edit point and use a different technique for each shot.  If you can get pixel blending to work then great, but often there's a rogue scene that won't work with it.  Try it and see...

On 13/12/2013, at 8:52 AM, mpo@michaeloreilly.com wrote:

> I have not paid attention to threads about PAL coz I never work with it
>
> But I have a great PAL 1920x1080 comp in my possession which I cannot rework.
>
> What's the best way to go about outputting an NTSC version of it ? (drop
> it in an NTSC 1080p comp ?)
>
> Answer is probably simple, but my brain is fried and I am under deadline.
>
> thanks
>
> Mike O
>
>
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