Question about 720 Progressive/Native

Z

Zkrazy

New member
Okay,
So I know this has probably been asked and answered many times, but I can't seem to find it. P2 8 Gig card gets 8 minues in 720p; and 20 minutes in 720pn. What EXACTLY is the difference between p and pn? What am I missing out on by going native? (so to speak) It doesn't make sense that it can produce exactly the same image. Please help me with this because my DP at the moment swears up and down that we should just be shooting in pn to save P2 card space, but I don't want to be upset when at the end I lose something in the image. Any help about what this native really does would be very appreciated.
 
PN only records the actual 24 frames per second. p records the frames with pulldown into a 60i stream.

I'd shot with 24pn a lot and it rocks. I now pray for the day they make a 1080 24pn...:)
 
The image is exactly the same, as is the final frame rate of the footage - you can get that "real film quality" in both P and PN modes.

The only real advantage to PN mode is that you are not recording duplicate frames that are going to be stripped out later in the post process anyhow - so it saves space on the P2 card (or Firestore).

There will never be a 1080 24PN in the DVCproHD codec.
1080 is a 30 frame interlaced format, so the final stream must be recorded as interlaced frames.

720 is a 60 frame progressive format, which is what allows for the recording of PN modes.
 
Luis Caffesse said:
There will never be a 1080 24PN in the DVCproHD codec.
1080 is a 30 frame interlaced format, so the final stream must be recorded as interlaced frames.

720 is a 60 frame progressive format, which is what allows for the recording of PN modes.
Click to expand...

Lies! Lies!!! Please? Pretty please? :)
 
Truth.

There can be 1080/24pN in the new AVC-Intra codec, but not likely ever to be in the DVCPRO-HD codec.

Even so, it would only save a little space, about 20%. It's far more effective in 720pN mode, where it saves 60%.
 
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