[Bf-webcontent] Convincing people to use BitTorrent forVideoTutorials

[Matthew H. Plough]

Sorry...I hit send a little too fast on that one.  Basically, zipping 
something reduces the redundancy in it.  Try zipping a zip file -- the 
size doesn't decrease because all of the redundancy that zip can remove 
has already been removed. 

Try compressing:
fed123bn1o2n5782

Not a whole lot of redundancy, right?  It's random noise, essentially.  
It's only possible to compress things that contain some form of redundancy:

AAAAAAAAbbbbbvvvv would be an ideal candidate for run length encoding.  
It would become: 8 A 5 b 4 v

Lossy and lossless video codecs compress video very well because they 
take into account the temporal and spatial redundancy in video.  If a 
generic zip algorithm that's designed to compress anything can do 
better, then you need to recompress your videos.  You could squeeze a 
lot more redundancy out of your videos without losing much, if any, 
visual quality. 

I hope my complete message helps a bit more.

Matt



Matthew H. Plough wrote:

> If you can save 40% size by zipping them up, then you're not 
> compressing them correctly.
> Matt
>
> Ingie Bee wrote:
>
>>
>>
>> Well, it looks like I could save at least 40% on size by zipping them 
>> up.  It's another option that can be added, at least to the most 
>> popular downloads?
>>
>> Ingie
>>
>