Hi Herman,
Thanks for the comment. You are correct, 7MB/sec is way too much. In
the spirit of my guide, I just let the defaults stand for the beginner
who would rather not worry about the details just yet and render
something that works the first time out of the box.
However, now that you mention it, it makes a lot of sense to lower this
value to something in line with reality. Substituting in this
calculation:
bitrate in kbps = FPS * WIDTH * HEIGHT * BPP (bits/pixel)
= 30 * 320 * 240 * .255 (varies, but this would be for high quality
output)
So, bitrate for that size/quality/fps rate would yield:
432 kbps
If you agree, I could add a more explanatory section in the doc
regarding calculating bit rates.
Also, you are correct. 30fps should work just fine. I will remove the
one comment from my guide.
thanks for noticing those items!
scott
On Mon, 2006-03-06 at 00:22 +0100, Herman Robak wrote:
> On Tue, 21 Feb 2006 02:14:43 +0100, Scott Frase <[EMAIL PROTECTED]> wrote:
>
> > Hey all,
> > I spent some time and wrote a Beginner's Guide to Exporting Video from
> > Cinelerra. I've based the format off of Alex Ferrer's Twiki, but I figured
> > I'd float it by this list first to see if anyone has any suggestions or
> > improvements to it before I put it up on the Twiki. Please let me know.
> > Again, this is a guide for beginners (like myself), so it is intended for
> > that audience.
>
> Good!
>
> I was puzzled by one of the parameters in the Video Ipod section
> <http://content.serveftp.net/video/renderTest/guideToCinExport.html#exportVideoIpod>
>
> Bitrate 7000000
>
> Seven megabits per second for a 320x240 25fps video? That is unreasonably
> big.
> It looks like one zero too many. By the way: Are you sure 30 fps won't work?
>
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