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PAL to NTSC nightmare
Hi,
Just been handed a nightmare job (for me): a capture to QT from a DVCam tape.
The original master (as I understand it) was PAL 50i HD D5 tape, which was then dubbed to an NTSC 29.97 D5, from which was made the DVCam.Still with me?
I’m given a capture from the DVCam as an NTSC 29.97 QT file, but it’s playing slow. I assume because it was at some point taken from 25fps to 24fps (or 23.98?) to add the pulldown to get it to 29.97…
Aaaaagh!
Given that this QT is the only thing I have to work with, can anyone tell me how I can safely bring the footage back to it’s ‘correct’ playing speed??? A speed change? Math was never my strong suit…
I’ve already removed 3:2 to get it back to 23.976 and it looks right (no fields).
Any help greatly appreciated.
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3 Replies
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the difference is 4.1% on a slowpal conversion which is basically what you got. Increase the speed by 4.1% thats it..
del
you cant hear my inner voice scream… can you..?
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Del & Dave,
Thanks for the rapid replies, much appreciated.
The fields ARE still there, I just removed 3:2 pulldown in AE from the footage to get it to 23.976… after that, I was whole frames at 23.976.
My question was really about the speed increase, and del has given me an answer I can go try. I’m assuming they ‘simply’ slowed it from 50i to 23.976, then added 3:2, in which case I’m just surprised there’s anything left to watch at all!?
trust me, I’ve been trying to determine the lineage of the tape, but it came from Romania, and all bets are off….
thanks again.
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The fun part of hd is about to begin. 50i is essentially 25p if there are no differing field’s. If you have a progressive tape in hd you can change the framerate 23.98/24/25/29.97/30 but it changes the run time, pitch corrupts the vitc etc. 25->23.98 you just have to do the math its about 4.1%. You would probably have more issues if they did a hd standards conversion through a teranex but the run time would be good. i’d be careful about the lingo, PAL is PAL, its a standard for SD the same as NTSC. HD is neither NTSC or PAL, HD is HD no matter what the framerate or where its being played. I hear this daily, i want a PAL D5, i can easily make a SD PAL D5, then i get oh no i want a 1080 50i and thats completely different..
del
you cant hear my inner voice scream… can you..?
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