[Dspace-general] Week 4: Bitstream types (Dorothea Salo)

[Hugh Paterson III]

True, but unlike stationary (paper based) media in order for a user to  
"pre-view" an audio or video file they have to "see" multiple portions  
of the file. With traditional media I read a paragraph or an abstract  
and say this article is going to be worth reading let me download it.  
but with video I am going to want to see if it is relevant or if the  
quality is good enough. So I am going to want a preview function as a  
user. YouTube offers this feature where a user can start viewing the  
file from any point. For the system to load a full size preview and  
then for the user to not download it seems wasteful in terms of  
bandwidth.  H.264 has a great scalable features. http://en.wikipedia.org/wiki/H.264 
   So why not automatically create a "preview" version when ever an  
audio/video file is added to the archive? Sure. There may be people  
who want the MPEG-2 file but there are people that will be served the  
file who don't want that original file. Why not serve them an h.264  
preview of the file and then also serve them a link to the MPEG-2  
file.  Just like flikr.com gives users size options when they download  
pictures why not give users a size option when downloading video/audio/ 
pictures in d-space?
- Hugh Paterson III

Hugh_Paterson at sil.org

On Sep 8, 2008, at 12:46 PM, Dorothea Salo wrote:

>> I don't think we want it to
>> be automatic.  Some of us have a desire to archive both (say) the raw
>> MPEG-2 data for the sake of never losing anything, and a properly  
>> edited,
>> well-engineered, scaled and compressed version for daily use.
>
> As a rule, I would want anything that changes a bitstream without
> human intervention to be non-destructive. I can see where that might
> become obnoxious from a storage standpoint, though, especially with
> video.
>
> Dorothea
>
> -- 
> Dorothea Salo dsalo at library.wisc.edu
> Digital Repository Librarian AIM: mindsatuw
> University of Wisconsin
> Rm 218, Memorial Library
> (608) 262-5493
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