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Here's my cameraman,
Ralf Oberti, in a souped-up 1929 Ford Roadster. |
I've just finished production and
post-production on 3 new programs about street
racing for Discovery
Networks International, all of which were
shot in 24p HDTV.
If you look at the new DV and HDV prosumer camcorders
that are coming out, many of them offer either
true or simulated 24p recording as a key feature,
and you may have wondered what that means.
The "24" in 24p is 24-frame-per-second video. Film
runs at 24 frames per second (fps), whereas video
normally runs at 30 fps. Shooting video
at 24fps make it look more like film.
In photographic terms, this is actually a slower
shutter speed. Just like
the streaks you see when using a slower shutter
on a still camera, in 24p
you get also get some motion artifacts. However,
for some unexplained
reason, these artifacts are pleasing to the eye.
The "p" in
24p means the frames are progressively scanned
- just like a
still or film camera, the entire frame is captured
and shown 24 times per
second. Normally, video is "interlaced",
where alternating halves of the
frame are shown 60 times per second, with your
brain putting them together.
This solves some broadcast problems, but reduces
resolution.
Combine the 24 and the p, and you've
got great looking, film-like video.
For that reason, lots of programs today are shot
using 24p video, either in
Standard or High Definition. Next time
you're looking for a camcorder, see
if offers 24p or a 24p mode - it may make your
videos that much better.