Going through a lot of bitrate calculators, I couldn't help but notice that there are none which can input a frame size (.e. 720x480, 512x272).
Do I just not worry about that or is there some way that I can figure this out?
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Zarxrax wrote:The ONLY thing that determines filesize is bitrate. Resolution does not effect the filesize. If resolution effected the filesize in any way whatsoever, then the shear notion of such a thing as "bitrate" would be utterly pointless.
sh-2.05a$ ls -l *.avi
-rw-r--r-- 1 trythil users 503574 Dec 4 16:02 preview.360.avi
-rw-r--r-- 1 trythil users 1190594 Dec 4 16:02 preview.720.avi
-rw-r--r-- 1 trythil users 970276 Dec 2 21:38 preview.avi
-rw-r--r-- 1 trythil users 1861524 Nov 16 03:29 preview2.avi
sh-2.05a$ tcprobe -i preview.360.avi
[tcprobe] RIFF data, AVI video
[avilib] V: 29.970 fps, codec=DIVX, frames=281, width=360, height=240
[tcprobe] summary for preview.360.avi, (*) = not default, 0 = not detected
import frame size: -g 360x240 [720x576] (*)
frame rate: -f 29.970 [25.000] frc=4 (*)
no audio track: use "null" import module for audio
length: 281 frames, frame_time=33 msec
sh-2.05a$ tcprobe -i preview.720.avi
[tcprobe] RIFF data, AVI video
[avilib] V: 29.970 fps, codec=DIVX, frames=281, width=720, height=480
[tcprobe] summary for preview.720.avi, (*) = not default, 0 = not detected
import frame size: -g 720x480 [720x576] (*)
frame rate: -f 29.970 [25.000] frc=4 (*)
no audio track: use "null" import module for audio
length: 281 frames, frame_time=33 msec
RadicalEd0 wrote:resolution only plays a part in the output size when a quantizer or quality is set, not bitrate. For caluclation, I'd like to say there is a direct relationship between a resolution like 640x480 and 1/4th that of 320x240, but there just isnt in the world of lossy compression. An image might be 4 times as large but also be 2 times as compressible, requiring only 2x the bitrate for the same quality.
Ko Oh Yoku wrote:so.......answer to my question please?
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