Mike
1. I sympathize with the question; I'm perpetually unsure on these
matters. I read recently, I think in Videomaker, that progressive is best
for most applications (including web, mobile devices, and computer
applications), but then they proceeded to enumerate situations where
interlaced might still be preferred, such as DVD's. They seem to associate
frame rate to whether it is interlaced or progressive, that is, you don't
hear of 60p.
2. As for 24fps, I'm pretty sure that the film industry would love to
move beyond such a visually deficient standard but they cannot afford to;
their investment with it is simply too great. The quality in film-making has
always been with their videography skills and has never been inherent in
24fps. I suspect the root source for the 24fps' reputation can be found in
the many aspiring videographers hoping if only they can get that "film-look"
then the film industry's prestige will rub off onto them.
3. I think your "assumption" in para. 2 is correct. However, the
technology of doing so is problematic, thus the many discussions about
combing and other motion artifacts.
Lee
From: [email protected] [mailto:[email protected]]
On Behalf Of Mike Boom
Sent: Wednesday, August 03, 2011 7:05 PM
To: [email protected]
Subject: [AP] Frame rates
Since we just talked formats, let's talk frame rates. I just got a
Canon XA10 that I'm enjoying very much, but am trying to figure out
what the best capture format and frame rate is for me. The format is
easy; it's AVCHD using H.264 compression. I just chose maximum
resolution (1920x1080) and maximum bit rate (24 Mbps), which Canon calls
MXP.
Frame rate's more difficult because I can't see any difference in
playback quality between them on my 1080p monitor. The camera (an
NTSC camera) offers 60i, 24p, and a couple of oddball frame rates
they call pf24 and pf30. Each of these last two is supposed to be
progressive, but the frames are "stored in 60i format," whatever that
means. I assume there's some sort of translation that takes place
between data in 60i frames, perhaps interleaving two fields there
into a single frame at 24 or 30 fps.
My question for the group: is there a frame rate that you find better
to work with and better for sales to other productions? I know 24p is
supposed to be film-like and is beloved by people aspiring to make
feature films, but 30p seems to me to provide more frames of
information per second and likely to work better on computer
monitors. And I've read that 60i is the usual native format for
today's 1080p TV sets -- at least here on the NTSC side of the world.
My own productions are usually aimed at display on 1080p NTSC
monitors, for what it's worth.
Thanks for any advice,
Mike Boom
www.laughingeel.com
[Non-text portions of this message have been removed]
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