Re(4): resolution 4 broadcats?

Re(4): resolution 4 broadcats?

Post by Holger Waterma » Mon, 12 Feb 1996 04:00:00

m> : NTSC TV is 30fps, PAL TV is 25fps, film is 24fps.
m> i'm not sure about the other two but NTSC isn't exactly 30fps it's slightly
m> less, and if you're syncing sound effects to your animation it can cause
m> no end of trouble.

The exact Framerate for PAL is 25 frames a Second, but every frame contains 2
pictures in
it - this is called interlaced (1 horiz line from frame one, 2nd line from
frame two, 3rd
line from frame one etc.) so you really get an animation framerate of 50
frames per second!)

so you have to render an framerate of 50 fps to get an really smooth animation
for tv.
(btw. you can setup the renderman to double every horiz. pixelline - so you
don't have
the double renderingtime! )

The same is true in the NTSC - World, now you have to go with 60 frames per
second for
an high quality motion output, it maybe some less like but this will be
only visible after
some running time....

the PAL Resoloution is 768x576 in quad-pixel, but there are is also an ABEKAS
Standard: 720 x 540
the NTSC Resoloution:  640x480 in quad-pixel, but there are is also an ABEKAS
Standard: 648 x 486

(you should use the abekas formats only if you plan to output the animation to
these kind
of Framerecorders)

for cinema the framerate is really 24 frames per second - no interlacing or
other kinds.
you have no limit with your render format, (if your output filmrecorder can
manage it :-)

be shure to apply some motionblurring (shutter times like real film cameras)

btw. does someone know an service provider who takes my animations as
QT-Movies etc.
and puts them on 35 or 16 mm cinema format ?

hope this helps - & greetins from austria!

Holger Watermann - Visual Data Research - Linz/Austria


Re(4): resolution 4 broadcats?

Post by WMor » Tue, 13 Feb 1996 04:00:00

<<(btw. you can setup the renderman to double every horiz. pixelline - so
you don't have the double renderingtime! )>>

How do you do this RenderMan?

Will Morse


1. resolution 4 broadcats?


a friend has approached me about creating a 30 sec. 3d animated commercial
for his business. i have read the FAQ for comp.animation, and while it
talked about resolution, when dealing w/ broadcast, it said make the res.
as close the the final viewing size as possible. well, televisions come in
all sizes, so my first question is:

1. what is a good choice for resolution when creating animation for television?

2. if someone can give me an idea of res. then i can do the math and find
out approx. disk space for 720 frames of animation (is 720 correct? 24 fps
x 30 sec. = 720)

3. i know that i can render the animation to the disk and certain cards
can convert to broadcast video, but are there places that i can send  say
a DAT tape, and they will get it to video for me, for a fee?

4. i use macs, and know that the box i have is not up to the task, any mac
users out ther know if a kick ass mac can be leased for a month or 2?

5. is it even remotly possible that the animation will not need some kind
of editing before going to tape? should i plan on getting something like
after affects to do work like that?

6. lastly, for those of you who do work like this for a living, what kind
of time would it take you to redner 30 sec. of animation? please state
what kind of box you use. and i know that rendering times depend on
complexity, shadows, lights, etc. i am looking for general guidelines.

thanks for any help you can give. this may be too big to handle, but i hope not.


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