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YY1020
7th August 2003, 17:33
I didn't know very much about that.So I want to help.
When I compress movie and anime,How much bitrate is good for using??
How do we determine ??

Sirber
7th August 2003, 17:38
LOL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Only you can answer that question :D

Teegedeck
7th August 2003, 18:09
Set the bitrate as high as you can endure. Higher bitrate, nicer picture. But it's not quite limitless; there ain't much sense in aiming at a 2nd pass that takes up more space than, say, 65% of the first pass. I mean to say, the right bitrate very much depends on the individual movie. If it's OK for you to pack no more than 1 hour onto 1 CD, I think you'll be content with the results in any case.

If filesize is an issue, it depends on how much quality you want to sacrifice for saving space - and vice versa.

Read the guides section on Gordian Knot for more details on determining a good 2nd pass bitrate.

stax76
7th August 2003, 18:16
additionally you can read the topics about compressibility, I think there are many :D

zag2me
8th August 2003, 10:45
....for me, minimum 1200kbs

Soulhunter
9th August 2003, 18:51
....for me, the minimum is 2500kbps @ 720' res. :D

stax76
9th August 2003, 19:02
who bids more :D

ChronoReverse
9th August 2003, 20:34
My current stress-test clip requires >4MBPS to look okay.

torsius
9th August 2003, 21:51
i use whatever bitrate corresponds to between .2 and .25 bpp
anything less than that, doesn't look so hot, and anything more, is usually overkill :)

Soulhunter
12th August 2003, 21:50
@ChronoReverse
>
My current stress-test clip requires >4MBPS to look okay.
<

High-Res. or computer-animated stuff like FinalFantasy-movie ???

unmei
13th August 2003, 04:59
if you need 4 mbit/s to get a satisfying result, mpeg-2 might be the path to choose :)

nah, relly you can't answer the bitrate question in a general manner. it depends on the source content and quality, the target environment (PC/DVD player, TV/CRT/TFT/rear projector, resolution etc) and probably most important on the person that watches it :)

i think for every bitrate between roughly 400 and 4000 you will find someone to say its the perfect balance...

oh, my own bid is 1000-1200 kbits for Xvid anime 640x480 to watch on TFT, without excessive prefiltering and without having to turn on the postprocessing (i hate PP)

ChronoReverse
13th August 2003, 06:25
Mostly 2D CG animation at 30FPS and 640X480.

I'm only using this as a test clip since it's rather uncompressible and shows off all the things that MPEG4 is known to be bad for.

koszopal
13th August 2003, 07:06
@ChronoReverse
samples ? link for download ?
koszopal :D