LISTSERV mailing list manager LISTSERV 16.0

Help for ARSCLIST Archives


ARSCLIST Archives

ARSCLIST Archives


ARSCLIST@LISTSERV.LOC.GOV


View:

Message:

[

First

|

Previous

|

Next

|

Last

]

By Topic:

[

First

|

Previous

|

Next

|

Last

]

By Author:

[

First

|

Previous

|

Next

|

Last

]

Font:

Proportional Font

LISTSERV Archives

LISTSERV Archives

ARSCLIST Home

ARSCLIST Home

ARSCLIST  October 2013

ARSCLIST October 2013

Subject:

Re: AVPreserve Releases Fixity and MDQC, Digital Preservation Tools

From:

"Richard L. Hess" <[log in to unmask]>

Reply-To:

Association for Recorded Sound Discussion List <[log in to unmask]>

Date:

Mon, 28 Oct 2013 19:00:04 -0400

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (120 lines)

And then there is the issue of mis-aligining the playback machine to
match the recording...that is a great joy. Audio azimuth is the easy
part of that.

A client of mine had a hugely important (to him) DV tape and I
subcontracted to a well-known video tape machine expert who was able to
misalign two camcorders of the same type as the original to replay the
tape. One got destroyed in the process, so another had to be procured on
eBay. It was very expensive and he never wants to do it again.

Cheers,

Richard



On 2013-10-28 5:38 PM, Jim Lindner wrote:
> I completely agree…. and the playback machine as well.
>
> Since one only rarely has the original machine that made the
> recording, I went to considerable effort to try to determine playback
> machine condition and put information regarding that condition in
> metadata. In video playback in particular the condition metadata
> generated will certainly vary depending on the playback machine
> condition. Dropouts for example  will certainly be worse as the heads
> wear, tip penetration reduces, and RF level decreases. Documenting
> all of that for normal migration practice is onerous and not
> practical in a video production environment where the machine is not
> open and the measurements very difficult to take. However, if at
> least hypothetically the playback of the machine was perfect or at
> least the defects known, then some of the issues of the recording
> machine become evident as variation from baseline.
>
> So…. in order to try to establish a baseline I designed an alignment
> procedure before migration so that the playback results could be
> tested with some measure of reliability. Essentially where "the
> rubber hits the road" is the final output. With a known good source
> or alignment tape and baseline criteria established before playback
> of the subject tape, one can try to align the system to the tape
> output of the known good tape so that baseline measurements are met.
> If those measurements are not met,  then the delta between perfect
> known good tape performance and actual performance is captured in the
> metadata as well. One can then judge the playback of the subject tape
> in context to the delta between the ideal performance of the known
> good tape and the actual results.
>
> It does work. Unfortunately users may or may not go to the trouble to
> do it. The tool is there, whether the user is interested in using it
> or even understands why they should is another matter entirely.
>
> While we all know that it is all a system, including both tape and
> machine, one can tend to forget it because all we are left with is
> the tape. I sometimes remember a presentation by Sony to a bunch of
> facility engineers where they explained that the delay in delivering
> the D1 decks did not involve the machines which were ready to
> deliver, but rather the delay in getting adequate tape product
> performance to meet specification. They did not want to delver the
> machine until there was adequate tape available, and not just
> quantity, but quality. Easy to forget that holding a reel of sticky
> muck.
>
>
>
> Jim Lindner
>
> Email: [log in to unmask]
>
> Media Matters LLC. 450 West 31st Street 4th Floor New York, N.Y.
> 10001
>
> eFax (646) 349-4475 Mobile: (917) 945-2662
>
> www.media-matters.net Media Matters LLC. is a technical consultancy
> specializing in archival audio and video material. We provide advice
> and analysis, to media archives that apply the beneficial advances in
> technology to collection management.
>
>
>
>
>
> On Oct 28, 2013, at 1:56 PM, JAMES HOWARTH <[log in to unmask]>
> wrote:
>
>> Chris - I'm getting more and more convinced (as more and more folks
>> suggest it) that the mechanical performance of the original
>> recorder is part of the recording, and indeed is already recorded,
>> and should be considered as an essential metadata element. Your
>> thoughts?
>>
>> Jamie
>>
>>
>> On Oct 28, 2013, at 10:01 AM, Chris Lacinak <[log in to unmask]>
>> wrote:
>>
>>> AVPreserve is pleased to announce the release of Fixity and MDQC,
>>> two new free and open-source digital preservation tools available
>>> for free download on our Tools page.
>>>
>>> Fixity is a utility for the documentation and regular review of
>>> stored files. Fixity scans a folder or directory, creating a
>>> manifest of the files including their file paths and their
>>> checksums, against which a regular comparative analysis can be
>>> run.
>>>
>>> MDQC stands for Metadata Quality Control, and it reads the
>>> embedded metadata of a file or directory and compares it against
>>> a set of rules defined by the user in order to perform automated
>>> review of embedded metadata.
>>>
>>> More information and links on the AVPreserve website at
>>> http://www.avpreserve.com/blog/avpreserve-releases-fixity-and-mdqc-digital-preservation-tools/

-- 
Richard L. Hess                   email: [log in to unmask]
Aurora, Ontario, Canada                             647 479 2800
http://www.richardhess.com/tape/contact.htm Quality tape transfers, even 
from hard-to-play tapes.

Top of Message | Previous Page | Permalink

Advanced Options


Options

Log In

Log In

Get Password

Get Password


Search Archives

Search Archives


Subscribe or Unsubscribe

Subscribe or Unsubscribe


Archives

November 2020
October 2020
September 2020
August 2020
July 2020
June 2020
May 2020
April 2020
March 2020
February 2020
January 2020
December 2019
November 2019
October 2019
September 2019
August 2019
July 2019
June 2019
May 2019
April 2019
March 2019
February 2019
January 2019
December 2018
November 2018
October 2018
September 2018
August 2018
July 2018
June 2018
May 2018
April 2018
March 2018
February 2018
January 2018
December 2017
November 2017
October 2017
September 2017
August 2017
July 2017
June 2017
May 2017
April 2017
March 2017
February 2017
January 2017
December 2016
November 2016
October 2016
September 2016
August 2016
July 2016
June 2016
May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
September 2015
August 2015
July 2015
June 2015
May 2015
April 2015
March 2015
February 2015
January 2015
December 2014
November 2014
October 2014
September 2014
August 2014
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
June 2007
May 2007
April 2007
March 2007
February 2007
January 2007
December 2006
November 2006
October 2006
September 2006
August 2006
July 2006
June 2006
May 2006
April 2006
March 2006
February 2006
January 2006
December 2005
November 2005
October 2005
September 2005
August 2005
July 2005
June 2005
May 2005
April 2005
March 2005
February 2005
January 2005
December 2004
November 2004
October 2004
September 2004
August 2004
July 2004
June 2004
May 2004
April 2004
March 2004
February 2004
January 2004
December 2003
November 2003
October 2003
September 2003
August 2003
July 2003
June 2003
May 2003
April 2003
March 2003
February 2003
January 2003

ATOM RSS1 RSS2



LISTSERV.LOC.GOV

CataList Email List Search Powered by the LISTSERV Email List Manager