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This says nothing about 1080 24P??? only iiiiii
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[toke lahti] “Can you tell us a technical reason, why pal version cannot record 1080p24?”
There isn’t a way to do an even gated pulldown against 50 fields. Since there is only one frame difference, 24 vs 25, the video would look like it had a hiccup, if the 24P was not extracted. Unlike NTSC where there is an opportunity to put 6 frames into the 24, and the gate is very even.
Hope that helps,
Jan
Jan Crittenden Livingston
Product Manager, DVCPRO, DVCPRO50, AG-DVX100
Panasonic Broadcast & TV Systems -
So the codec chip just prevents from recording 24fps without anykind of pulldowns?
Thanks. -
Because the Camera is recording 50i it has to lay 24 frames into 50i, therefore with only one frame left out of the fields available, it would look wierd, so 25 frames it is.
Best,
Jan
Jan Crittenden Livingston
Product Manager, DVCPRO, DVCPRO50, AG-DVX100
Panasonic Broadcast & TV Systems -
24 to 25 or vice versa conversion does NOT involve pulldown. Pulldown in the classical sense is strictly a NTSC feature.
24/25 covnersion is down by slowing down the image and sound.
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Yes, slowing 25fps to 24fps is the traditional procedure, but with modern technology it might be nice to have 25:24-pulldown, so you can keep the original speed of movement.
On the other hand next gen of dvcpro codec might also incorporate arbitrary framerate also for 1080p so there isn’t need for kludges any more…
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24 on 25 is achieved by duplicating a field every 12 frames. The problem is every other half of the second comes out interlaced. But that’s not the real question. The real question is Why PAL version?! Why not make a camera doing all frame-rates?
BTW, are we getting 720 50P at least?
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Is who getting 720/50p? The European version? Yes the European/Australian version will have 720/50p, and 720/25p, and many other frame rates as well. And it will have 1080/50i and 1080/25p too.
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[mishka] “The real question is Why PAL version?!”
That is the right question. Global model would be logical.
Maybe the old dvcproHD chipsets are the limiting factor here… -
It was said that the camera will record 24p by adding 3:2 pulldown. Is the pull down recorded on the P2 card? If so, why not just record 24 full frames and save space for longer recordings?
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Because they didn’t think of it at the time they invented the DVCProHD1080i codec!! Yes, I know, very short sighted of them. Would be nicer still if Panasonic also included a no pulldown frame option for the 24p mode, but using the PhotoJPEG codec instead if they don’t want to do changes to the DVCproHD codec.
Graeme
– http://www.nattress.com – Film Effects and Standards Conversion for FCP
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