1080i24pa question

Charlie Anderson

Charlie Anderson

Not so clever
I've always been told that the only stupid question is the one never asked, so I have 2 questions:

What's the advantage of shooting at 1080i24PA over 1080i24P? I normally shoot in 1080i24P for everything not requiring VFR, so do you shoot in 24PA for the pulldown removal? is that it?

Also if I want VFR should I just shoot everything in 720p, or shoot in 1080i, then use 720p for the scenes I want to have VFR and then downconvert/upconvert footage to match? So far I jsut shoot everything in 720p when I want to use VFR to not worry about quality loss and artifacting.

I'm new to HD so I'll be asking a lot of questions in regards to getting the best possible picture out of my set up.

Thanks in advance for the help!

Charlie
 
Charlie Anderson said:
What's the advantage of shooting at 1080i24PA over 1080i24P? I normally shoot in 1080i24P for everything not requiring VFR, so do you shoot in 24PA for the pulldown removal? is that it?
Click to expand...

You should always shoot PA if you want to strip pulldown out and have true 24 frames to work with. The only reason to shoot P instead of PA would be if you wanted to edit and/or output your video at 29.97 fps interlaced video through and through.

Also if I want VFR should I just shoot everything in 720p, or shoot in 1080i, then use 720p for the scenes I want to have VFR and then downconvert/upconvert footage to match?
Click to expand...

You will gain an improved picture quality with slightly better resolution and compression results if you shoot 1080 instead of 720p. The only advantage for shooting 720p is the reduced file sizes and the variable framerates. I would suggest shooting at 1080i 24PA whenever possible and choosing 720PN when you need the variable framerates.
 
John Froton said:
You should always shoot PA if you want to strip pulldown out and have true 24 frames to work with. The only reason to shoot P instead of PA would be if you wanted to edit and/or output your video at 29.97 fps interlaced video through and through.
Click to expand...
Thanks, yeah I noticed that while editing that it was at 29.97, so now I know how to fix that.

John Froton said:
You will gain an improved picture quality with slightly better resolution and compression results if you shoot 1080 instead of 720p. The only advantage for shooting 720p is the reduced file sizes and the variable framerates. I would suggest shooting at 1080i 24PA whenever possible and choosing 720PN when you need the variable framerates.
Click to expand...
I would shoot 720PN but I'm working off a firestore, so until panasonic fixes the 1394 output issue with PN then I'm stuck with 720p for right now.

Thanks a lot, really helped and now I know what to shoot all the time.
 
I would shoot 720PN but I'm working off a firestore, so until panasonic fixes the 1394 output issue with PN then I'm stuck with 720p for right now.

Sorry if I come across as ignorant, but what problems are you referring to?
 
Charlie,

Just remember to use a 24p (23.98 progressive) project setting when you edit and you should be fine with 1080i 24PA

Also the issue with the 720pn will never change as 720pn is not NTSC and therefore cannot be output in a signal. This is why 720pn is so cool :)
 
John Froton said:
Charlie,

Just remember to use a 24p (23.98 progressive) project setting when you edit and you should be fine with 1080i 24PA

Also the issue with the 720pn will never change as 720pn is not NTSC and therefore cannot be output in a signal. This is why 720pn is so cool :)
Click to expand...
Interesting, I'll have to do some PN tests tonight when I get home from work to see how it works.
 
You must log in or register to reply here.
Back
Top