Skip to end of metadata
Go to start of metadata

Collection:

Unable to render {include} Couldn't find a page to include called: mpeg video with Danish TV broadcasts

Issue:

Title
IS22 Characterise and Validate very large mpeg-1 and mpeg-2 files
Detailed description Collections of very large videofiles (50Gb+ each) are hard to handle when it comes to characterisation and validation. Known characterisation tools do not nessecarily like very large files. Not all needed formats are well supported (if supported at all) in known tools (JHove, JHove2, FITS, XC*L)
Scalability Challenge
Tools need to be able to work on very large files (50Gb+) and in a distributed environment to scale (SB holds more than 400Tbytes mpeg-1/2)
Issue champion Gry Elstrøm (SB)
Other interested parties
 
Possible Solution approaches 1. Survey and test existing tools for scalability when it comes to file size
2. Survey and test existing tools for support for mpeg-1 and mpeg-2
3. Adapt tools to support large files and/or extend format support in tools
Context
Lessons Learned
Training Needs
Datasets Danish TV broadcasts, mpeg videos
Solutions Optional solution - SO25 Rosetta v3.0 Implementation Integrated with DROID 6
Characterise (not validate) solution - SO06 FFprobe

Evaluation

Objectives This is about robustness and scaleability as well as advanced functionality. The corresponding collection is currently over 700Tbytes
Success criteria We will have a workflow that gives technical output of all the mpeg-files and validates the files to identify problematic files that current or future tools might have problems with
Automatic measures 1. Tool support for very large files (75Gb)
2. Process 2Tbytes of sample content in less than 24 hours
Manual assessment 1. The workflow gives useful output. Should be understandable by curators
2. The majority of the files deemed NOT VALID have a human understandable problem
Actual evaluations links to acutual evaluations of this Issue/Scenario

Solutions:

These solutions have proven to work

Title SO06 Use Ffprobe to characterise audio/video
Detailed description A detailed description of the Solution. Feel free to include links to further information (eg. OPF blog posts!). Note that a Solution is a specific digital preservation application of a software tool or tools. It might for example be a scripted tool, or a myExperiment workflow.
Solution Champion
Asger Askov Blekinge
Corresponding Issue(s)
IS24 Characterisation of large amounts of wav audio
IS22 Characterise and Validate very large mpeg-1 and mpeg-2 files
myExperiment Link
A link to a corresponding workflow on myExperiment
Tool Registry Link
http://wiki.opf-labs.org/display/TR/Ffprobe
Evaluation
Any notes or links on how the solution performed. This will be developed and formalised by the Testbed SP.

and

Title SO34 Use Manzanita Crosscheck to validate mpeg transport streams
Detailed description A detailed description of the Solution. Feel free to include links to further information (eg. OPF blog posts!). Note that a Solution is a specific digital preservation application of a software tool or tools. It might for example be a scripted tool, or a myExperiment workflow.
Solution Champion
Who owns the Solution? Identify the owner with a link to their contact page on the SCAPE Sharepoint site, as well as identifying their institution in brackets. Eg: Schlarb Sven (ONB)
Corresponding Issue(s)
A bulletted list of links to Issues to which this provides a Solution
myExperiment Link
A link to a corresponding workflow on myExperiment
Tool Registry Link
A link to information about the tool itself. Ideally this should point to an entry in the OPF Tool Registry Click here if you need to create a new Tool Registry entry
Evaluation
Any notes or links on how the solution performed. This will be developed and formalised by the Testbed SP.
Labels:
lsdr lsdr Delete
scenario scenario Delete
lsdrscenario lsdrscenario Delete
Enter labels to add to this page:
Please wait 
Looking for a label? Just start typing.
  1. Oct 11, 2012

    Its not clear what kind of characterization properties are expected to be extracted.