[youtube-dl] Download speed metric

[Romulo Curty Cerqueira]

Thanks for your answer Mr Drung.

That's fine for me too. The use of kB/s is also correct.

Note that "k" for kilo (=1000 times) and "K" is for Kelvin (= a metric for
temperature).
So "k" is correct because it should be in lowercase.
And "s" is also correct because it should be in lowercase to means "second"
(=a metric for time).
More details could be seen at
http://en.wikipedia.org/wiki/International_system_of_units

But the binary prefix for amount of data metric does not have a good
standard yet. The National Institute of Standards and Technology in the
United States has suggested the use of bit for bits and B for byte but (in
January 1999) created a new designation for binary prefixes. The IEEE
Standards Board decided that IEEE standards will use the conventional,
internationally adopted, definitions of the SI prefixes.(see details at
http://en.wikipedia.org/wiki/SI_prefix#Units_used_in_computing_and_telecommunications
).

So 8 kbps = 8 kb/s = 1 kB/s = 8000 bits per second.
Then the metric kB/s can be used.

The only metric that is not acceptable is k/s, because it is for frequency
and k/s = 1000 x 1/s = 1000 Hz = 1 kHz. :-)

Thanks for your attention.

Romulo

On Sun, May 16, 2010 at 7:52 AM, Benjamin Drung <bdrung at ubuntu.com> wrote:

> Am Samstag, den 15.05.2010, 15:12 -0300 schrieb Romulo Curty Cerqueira:
> > Dear Mrs
> >
> > First of all, I would like to thank you for this kind software.
> >
> > I would also like to give you a comment to get a better usage of it.
> >
> > I saw that you write "k/s" for speed metric, but it is not meaningfull
> > because k means only "kilo" and it means 1000 times something, as
> > bellow:
> >
> > Retrieving video data:   0.4% ( 310.00k of 74.95M) at  421.32k/s ETA
> > 03:01
> >
> > I think it should be better to write "kbps" (kilo bits per second),
> > the most used in the market, as bellow:
> >
> > Retrieving video data:   0.4% ( 310.00k of 74.95M) at  421.32 kbps ETA
> > 03:01
>
> IMO youtube-dl should follow Ubuntu's units policy [1] and use kB/s.
>
> [1] https://wiki.ubuntu.com/UnitsPolicy
>
> --
> Benjamin Drung
> Ubuntu Developer (www.ubuntu.com) | Debian Maintainer (www.debian.org)
>
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