A three part question -- 1080pN vs 720pN

S

sodotoguwangus

Well-known member
1. First, I have read that 720pN gives better colors than 1080pN, and that the difference in overall resolution is not signifigant. Is this true?

2. With 720pN mode, I understand that it is possible to get 20 minutes of video on an 8 gig card -- which is more than standard 720p mode. My question is this: Does 1080pN have similiar time-related recording advantages over standard 1080 mode? If so, how much time could I record onto an 8 gig card in 1080pN?

3. Finally, based on the above, I would like to hear what setting (720p or 1080p) the majority of you will be using for film-related work.
 
woah woah woah woah! Slow down.

As far as I know there is no such animal as 1080pN. So there is no advantage to shooting in it!

720P has a native mode (hence the N) that strips out the extra frames used for 3:2 pulldown bit 1080P requires these frames. So there is no mode that is 24PN for 1080HD recording in the DVCPRO-HD codec.
 
sodotoguwangus said:
1. First, I have read that 720pN gives better colors than 1080pN, and that the difference in overall resolution is not signifigant. Is this true?

2. With 720pN mode, I understand that it is possible to get 20 minutes of video on an 8 gig card -- which is more than standard 720p mode. My question is this: Does 1080pN have similiar time-related recording advantages over standard 1080 mode? If so, how much time could I record onto an 8 gig card in 1080pN?

3. Finally, based on the above, I would like to hear what setting (720p or 1080p) the majority of you will be using for film-related work.
Click to expand...

Sorry about that. I meant to say 1080p and 1080p advanced.
 
Okay. It works just the way that 24P is laid down to a 60i dv stream. Are you familiar with that? Like the dvx or XL2?

Theonly difference bwtween 24p and 24pa is that the pulldown cadence is different. 24Pa allows for easier extrapolation the 24 frames without a recompression stage. In traditional 3:2 pulldown certain frames are split across several fields and this degrades the qulaity when trying to get back to staight 24P....

In short there is no benefit to it for saving space. Al versions of 1080 on the HVX will consume 100mb per second regardless.
 
Like icicle22 said, there is no "Native" (or "N") mode for 1080. The difference between standard and advanced mode when shooting 24p in 1080 is just the difference in pulldown schemes; either 3-2 pulldown (for standard mode) or 2-3-3-2 pulldown (for advanced). It's the same setup as 24p in the DVX. Unfortunately, right now FCP doesn't support 24pA in the 1080 mode, but I'm sure they will in time. I would use the "advanced" mode over the "standard" mode if it was compatible with FCP. If you don't understand the difference between the pulldowns, check out Adam Wilt's old DVX article on his website; it gives a pretty good example:

http://www.adamwilt.com/24p/index.html#24pRecording

As far as I'm concerned, my camera will never leave the 720p/24pN mode. It's the only mode that variable framerates are achievable in, it gives you much longer (60%!) recording times, it's less bandwidth-intensive to edit, and it's already compatible with a variety of editing platforms. I also don't think there's much visible gain in resolution, and given that the chipset is only 960x540, that makes a bit of sense. I'm sure the day will come when I'll be shooting 1080 footage and beyond, but I don't really think I'll use it much with this camera.
 
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