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<DIV><FONT face=Arial color=#008080 size=2>Hello John,</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#008080 size=2>I think you have just experienced the
'tip of the iceberg' data explosion many DSpace users are going to see the
coming years. I would recommend not compressing the files (lossy) in case you
want to use them in the future with the latest (HD) technology. It will be very
difficult for DSpace or any archive system to handle such big files and I think
it's better that another system optimized for this task handles it under DSpace
governance. With video you have the additional need to handle
streaming versions on (proprietary) video servers.</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#008080 size=2>I recommend to do the
following:</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2>1. Determine a 'master archive'
format for the original video material, that meets your current and future
needs.</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2>2. Make a simple Unique Identifier
generating program that gives this number to the master video file.
</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2>3. If possible try to do a bitstream
checksum on the original master file</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2>4. Generate a metadata file with the
mpeg and other metadata (like the checksum) and give it the same name as the
master video file. For preservation/archive purposes I would advice to never
delete this (small) file, but if it changes create a new version.</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2>5. Import the metadata file with
Unique ID in DSpace and manage it there as part of the collection and content
metadata enrichment process.</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2>6. For production/publishing convert
from the master file to a streaming or any other format and let DSpace manage
the links/location process.</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2>7. To safe storage costs, store the
master video files on tape or DVD near-line or off-line. Be sure to regularly
check the integrity of the files (hence the checksum). </FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#008080 size=2>I think we need to develop DSpace the
above mentioned way and let storage resource brokers and other IT systems handle
the storage distribution and disaster recovery part. </FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#008080 size=2>I look forward to your and the other
DSpace community members comments on this idea and how to best implent
it.</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#008080 size=2>Best regards,</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#008080 size=2>Peter Walgemoed</FONT></DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #008080 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=John.Murtagh@brunel.ac.uk
href="mailto:John.Murtagh@brunel.ac.uk">John Murtagh</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=dspace-general@mit.edu
href="mailto:dspace-general@mit.edu">dspace-general@mit.edu</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, June 26, 2006 11:41
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Dspace-general] Video
files</DIV>
<DIV><FONT face=Arial color=#008080 size=2></FONT><FONT face=Arial
color=#008080 size=2></FONT><BR></DIV>Hello all,<BR><BR>I've got 15 hours
worth of video footage from our Specialist <BR><BR>Research Institutes Open
Week - however, despite formatting it into MPEG and cutting the footage into
15 minute snippets the files are just too large to be placed onto DSpace.(We
are talking 80MB! And no, we don't have a provision for bit
streaming!)<BR><BR>Has anyone got any solutions to this problem?<BR>Currently,
DSpace only "supports" video/mpeg video files but is there a "best" way of
compressing files or using a "known" or "unknown" file format on the files we
try to upload? Obviously, we want the size reduced without deteriorating the
quality of the images.<BR><BR>Is it best to wait for further upgrades of
DSpace in the near future?<BR><BR>Appreciative of any thoughts/comments/ideas
on this one.<BR><BR><BR>Thanks in advance<BR><BR>PS<BR><BR>We're also going to
be trying out the Video in DSpace "hack" as presented here: <A
href="http://66.249.93.104/search?q=cache:adBQyTqRpE4J:dsug2006.uib.no/archive/krejcir.pdf+dirty+trick+dspace&hl=en&ct=clnk&cd=1&client=operaabout">http://66.249.93.104/search?q=cache:adBQyTqRpE4J:dsug2006.uib.no/archive/krejcir.pdf+dirty+trick+dspace&hl=en&ct=clnk&cd=1&client=operaabout</A>
<BR><BR>wondered if anyone had successfully tested this
work-around?<BR><BR>Thanks<BR><BR>John
Murtagh<BR>________________________________________________<BR><BR><BR>John
Murtagh<BR>Project Manager - Brunel University Research Archive<BR>Brunel
Library<BR>Kingston Road<BR>Uxbridge<BR>UB8 3PH<BR>Tel. 0189 526
5417<BR>E-mail: <A
href="mailto:john.murtagh@brunel.ac.uk">john.murtagh@brunel.ac.uk</A><BR>Intranet:
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href="http://dspace.brunel.ac.uk/">http://dspace.brunel.ac.uk/</A><BR><BR>_______________________________________________<BR>Dspace-general
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