4 Gig is about 18 minutes so that would be in the neighborhood of 20 minutes or so.

What format? Mpeg? AVI? Uncompressed? Cream Cheese? . . . Stan this could be confusing for Newbies reading this - yeah? Oh the Cream Cheese WAS a joke! And no! Cream Cheese isn't a joke .. it is a very very serious business .. .

Grazie

Both trains arrive at the same time...oh wait, what was the question?

LOL!

Grazie: it's much simpler than that. The premise of the original question is that 1GB = 4.5 minutes. That is sufficient information. We don't care what format. Even if it is cream cheese, we get 4.5 minutes of it in 1 GB. So, 4.7GB * 4.5 minutes/GB = 21.15 minutes. Simple algebra, whether we're using DV, cream cheese, elephant toenail clipings, or gingerale.

Seriously.

So Stan gets to find a gig/minute figure? - Is that it? Is that all he wants to do?

There was I thinking Stan was wanting to know how much "more" he could squeeze onto a platter that has that "magical" number 4.7 stamped all over it. It was that number that I got pressed into my brain . . not that he just wanted to multiply the 2 numbers together. I really shouldn't jump to conclusions. If somebody "asks" how to mulitply two numbers together I should do that .. nothing more nothing less.

And Kelly, thanks for the further education. Never too old to learn I guess .. . Serioulsy :)

Grazie

The original question has an error. I assume you're asking how much fits on a single-sided, single-layered DVD blank. But it's not 4.7GB, it's really 4.38GB, as measured by the funny math system used in computerdom.

. . and now it gets trickier .. . hmmm . . now what? . .and no, I do know about the bits>bytes>kbs>mb>gbs etc etc . .

So, let's hear from Stan first . .. G

It's Stan's, " . . I'm sure you know why I'm asking" . .well, that kinda got to me too . .. simple maths? Well maybe . .and then . . maybe not. Maybe he HAS done the math and can't figure, out what he is doing wrong in the format? Maybe he has got a project that now wont fit onto his 4.7? MAybe he wants a different format? Maybe . . maybe . .. maybe .. . I can see this coming round in a circle verrrrry soon . .


Grazie

Well, i didn't bother trying to do the math when i wanted the answer to this question. I merely opened up Nero and started dragging DV files onto a DVD until i couldn't fit any more. At that point i had about 21 minutes 12 seconds worth of files, with just a tiny sliver left over. So that makes me think that 21 minutes 15 seconds is probably just about right, which means that in this calculation 4.7GB is appropriate.

Remember, Stan didn't say whether the 1GB he mentioned in the original question was 1,000,000,000 bytes or 1,073,741,824 bytes.

This has confused me.

My gig's usually last for about 30 minutes but it depends on the audience.

If they want more, I will give them more but I usually try to work in round numbers.

The only time I ever did less than a full gig was when I was booed off the stage about 3/4 the way through. That could have been about 0.7 of a gig

Alan :~)

AHHHHHHHHHHH, this thread has helped me figure out the accuracy of a theory of mine. My theory is that the area of a circle is not complete. The formula is , area = pi R squared. pi is not a complete number, it's commonly accepted to be 3.14, but it continues WAY past the decimal point, and so far as I know the end has never been reachead. I once heard someone refer to the "millionth decimal place of pi". This tells me that, since pi is not complete, then the area of a circle cannot be complete. OK, it just hit me, it's the HOLE IIN THE CD/DVD that accounts for the missing piece! My proof has been right in front of me!!! With cream cheese!'

My wife is a math teacher, and sh'e never really believed me about this, now I can proove it to her.

KEWL!!!! Thanks y'all.

that's why tyres always have a flat bit near the bottom. It's to bridge the missing bit of the circumference.

The same applies if you divide 100 by 3. Multiply it by 3 and you lose a bit.

Actually both premises are untrue.

pi is complete! pi r squared is a complete circle. It's only the limited decimal representation of it that is incomplete. That's why mathemeticians say "pi r squared" rather than "3.14159265358 r squared". We know the latter is incomplete, but we also know that pi is a complete representation of the concept.

Dividing 100 by 3 and multiplying by 3 results in exactly 100, no more, no less. 100 / 3 = 100 thirds, multiplied by 3 is 300 thirds, which is ... 100. It's only when you use the decimal representation of 100 / 3 and write down 33.3333333333 (which is incomplete), then multliply this incomplete result by 3 to get 99.999999999999, that you have the error. The error is in how you represent it, not in the math itself.

By the way, 22/7 is a horrid representation of pi. I far prefer 355/113.

Thank you.

But you only listed 10 or so decimal places of pi, I just saw where you can compute 100 BILLION decimall places, and that is not the end, really, it is not complete. Pi r squared isn't a complete circle, it's the formula to figure the area of the circle. My half-way jokeing is that since pi has never reached the last decimal place, the area of a circle must have a gap somewhere. It has not even reached the point of .abcdefgijkkkkkkkkkkkk, it just keeps going.

A search of the term "pi" leads t a LOT of good (and fun) information. And if you go here:
http://www.cecm.sfu.ca/pi/pi.html
you can watch the decimal places roll by, and roll by,...

I do agree with the 100 thing.

Even more kewl stuff:

” "The Greek notion of number was based on the length and numbers that existed were numbers that could be drawn (with just an unmarked ruler and compass).

Is pi a number in the Greek sense?

Lindemen's proof of the trancendence of pi in 1882 settles the issue that pi is not constructible by the Greek rules."

"one expects the digits of pi should look random, that roughly one out of every ten should be a 7 etc., this appears to be true for the first few hundred billion".

These are from "The Amazing Number", by Peter Borwein.

And cream cheese too.

Ah, but you miss my point that, even though the decimal representation of pi can never be complete, pi itself is. That's why we write the symbol "pi" instead of "3.1415926...."

Pie are not square....they are round.

Couldn't resist

When you come to a fork in the road, take it.
We are WAY past the fork in this road!!
It must be Friday?

This post reminds me of some of the log entries at the observatory ;')

Terry

Maybe sometimes it's a spoon.

So do you eat pi with a fork or a spoon?

I eat Pi with chopstick. It are square meal.