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Re: Using Dropbox as a share resource + Old News Quiz Episodes please!(Don possibly)

Messages in this topic: 27 View All
James R CurryJan 2, 2013
 
 
Dropbox works in an unusual way.

When you place the file in your Dropbox folder, it performs a quick checksum calculation (a sum to identify a unique file).  If that file exists anywhere else on Dropbox, that is, if anyone else has the exact same file, then it skips the upload process.  It simply makes a copy of the file that already exists.

That's why files on Dropbox sometimes appear to upload in a few short seconds.

Of course, the receiving user still has to go through the download process, but the files will have appeared in their account near instantaneously.

On Wed, Jan 2, 2013 at 5:39 AM, Don Judge <don@...> wrote:


Agree with kJ there.
To transfer 7.5GB in 10 seconds would require 6Gb/s of bandwidth assuming my calculation is correct.  Wowser! - we can only wish.


Back to my archives...

A 6MB 30 minute mp3 audio file will sound rubbish.
A 25MB 30 minute mp3 audio file may sound good, but it's not guaranteed.

However, size isn't everything, there are many other factors involved.
A 6MB file can be upscaled to a higher bit rate to give 25MB but it won't sound any better.

To get good audio quality from mp3 encoded speech you need at least 96kb/s IMHO.
I go for (at least) 128kb/s if I have a choice.

I have not listened to all the episodes so I cannot say whether my files are all good quality or not but I can say none of the ones I glanced at last night were low bit rate.

--
Cheers

Don   __o
      \<,
.....O/ O




From: kj.naughton <kj.naughton@...>
To: just-a-minute@...
Sent: Wednesday, 2 January 2013, 9:36
Subject: [just-a-minute] Re: Using Dropbox as a share resource + Old News Quiz Episodes please!(Don possibly)

Hello Cymro

It's unlikely that 7.5Gb transferred in 10 seconds.  More likely is that the names of the files transferred in 10 seconds with the content of the files dribbling down over the next few hours or days.

The only thing I'd say about commercial hosting is that you need to choose carefully.  Not only do you want a company that's going to be around for a while but you need to check exactly what you're allowed to store.  A lot of hosting companies insist you host websites and not a loose collection of individual files.  Until fairly recently I had backups of various household files stored with one such hosting company - they decided they weren't a website (which they weren't) and deleted them.  So the lesson - read the T&Cs *very* carefully.

Cheers

kJ

--- In just-a-minute@..., Cymro Gwirion <cymro.gwirion@...> wrote:
>
>  One thing about Dropbox though - seeing as both Wayne and I were users - my clue collection of 7.5 gb transferred over to him in about 10 seconds apparently!!
>




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--
James R Curry
scratchy@...

 
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