Why 720P?

B

bazza

Active member
I've always shot all my footage (mainly weddings) in 1080/50i. What exactly would using 720/50P or 720/25P do for me? Film look, whatever that is? Better images? Jerky motion? I'd rather not find out the hard way by shooting a whole wedding and having problems I'd never dreamt of! I'm sure this has been discussed before but can't seem to find an applicable thread, so any help will be appreciated thanks.
 
60p or 50p also give you the option of pulling still frames out of the video and not seeing interlacing artifacts.

An all progressive project compresses better on DVD as well.

Overall, if you are going to DVD I would always stay with a progressive format as the HD to SD conversion is made more difficult with interlaced footage.

60p & 50p translate very well to interlaced DVDs as they have the same framerate/field rate. 60p - 60i 50p - 50i
 
OK, looking good so far. What about jerkiness in movement particularly pans, or am I getting mixed up with something else? Also I thought DVD is specifically designed to display on interlaced scan displays so how come progressive actually makes better DVDs? Is there anything that I'd need to change in my workflow of Edius-Procoder-Ulead Workshop/Movie Factory?
 
I shoot 1080 and edit my project in a 720 workflow. That way i can move the footage around and reframe it by a few pixels if need be, and i can shoot 720 for 60p :)
 
bazza said:
OK, looking good so far. What about jerkiness in movement particularly pans, or am I getting mixed up with something else? Also I thought DVD is specifically designed to display on interlaced scan displays so how come progressive actually makes better DVDs? Is there anything that I'd need to change in my workflow of Edius-Procoder-Ulead Workshop/Movie Factory?
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If you are shooting 50p or 60p you can whip around just like interlaced.

You might be thinking 24p which is a slower framerate, so you need much slower camera moves.

DVD was designed around interlaced, but the reason to shoot progressive in HD is the down-conversion process.

If you were shooting in SD then interlaced would be the best choice.

Progressive frames make a cleaner down-convert as the frame is recorded as one unit, just like changing the image resolution in photoshop.

I use Edius and it will yield better HD to SD results with progressive footage.

One other reason to shoot progressive. If you put your footage on the web it will look more natural given computer monitors are native progressive instruments.
 
I stand corrected.

I was going from a "video" look perspective as the OP was shooting in 50i.

24p SD or HD is always a great option.

Sorry.
 
Bassman2003 said:
I stand corrected.

I was going from a "video" look perspective as the OP was shooting in 50i.

24p SD or HD is always a great option.

Sorry.
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No need to apologize Bassman :) I wasnt thinking about "video look" when I read the thread. Its been so long since I've shot anything interlaced.
 
I also like to shoot 60p when handheld and I have to get as smooth and steady a shot of signage or something with straight angles and or natural beauty. Tends to allow me to get a smoother look.. even if for a couple of seconds.. still works.


There is something to be said though about shooting 1080 and recomposing. I especially like to do this when I shoot greenscreen.
 
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