Check Your Standard: PREFORMA and MediaConch
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Transcript of Check Your Standard: PREFORMA and MediaConch
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CHECK YOUR STANDARD: PREFORMA
AND MEDIACONCHErwin Verbruggen
Netherlands Institute for Sound and Vision
JTS 2016 – NMS Singapore
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LABS.BEELDENGELUID.NL
OPENIMAGES.EUBIT.LY/FLOSSINVENTORY
PRESTOCENTRE.EU
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CONFORMANCE CHECKER IN PRESERVATION• File has been produced according to the specifications of a standard file format –File matches the acceptance criteria for long-term preservation by a
memory institution • Reports which properties deviate from the standard specification and acceptance criteria– In human and machine readable format
• Performs automated fixes for simple deviations in the metadata of the preservation file.
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IN OAIS TERMS
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PREFORMA Empowers memory
institutions to gain full control over the technical properties of digital content intended for long-term preservation
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REFERENCE STANDARDFor PREFORMA:1. Format can capture content in an uncompressed
or mathematically lossless encoding, and retain as many original properties as possible (ie. bit-depth, resolution, …)
2. Format is Free/Libre (cf EIFv1)3. Format is well documented4. Format has been adopted
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Open standard?
AUDIOVISUAL TEXT IMAGEbroadcast film Consumer
PREFORMA stakeholders
MPEG-IMX(MXF/MPEG2)XDCAM HD422(MXF/MPEG4)
DPXDCP(MXF/JPEG2000)
MOV/MPEG2AVI/MPEG2MPEG/MPEG2MPEG/MPEG4-AVC
PDF 1.4PDF/A1
TIFF 6.0JPEGJPEG2000RAW
Industry standards
AS|07 (MXF/MPEG2)(MXF/JPEG2000)FIMS(MXF/MPEG2)
DCDM (TIFF 6.0)DCP (MXF/JPEG2000)IMF (MXF/MPEG4)
MPEG-AF PDF JPEG2000TIFF
Open standards
MKV/FFV1OGG/Dirac
PNG WebM/VP8OGG/Theora
PDF/A1PDF/A3PDF/A3
PNG
PREFORMA MKV (?) | OGG | JPEG2000 (?) | FFV1 | Dirac | LPCM (?)
PDF/A TIFF 6.0 (?)
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REFERENCE STANDARDFor PREFORMA:1. Format can capture content in an uncompressed
or mathematically lossless encoding, and retain as many original properties as possible (ie. bit-depth, resolution, …)
2. Format is Free/Libre (cf EIFv1)3. Format is well documented4. Format has been adopted
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See Session 7: Review and comparison of FFV1 versus other lossless video codecs - Peter Bubestinger
“FFV1/MKV ARE GAINING TRACTION IN A CORNER OF THE COMMUNITY - WHETHER FOR SIZE, HIPNESS, ANTI-ESTABLISHMENT, SIMPLER-THAN-MXF, "FREE", OR OPEN OR WHATEVER.”
George Blood, AMIA List, 2015-12-03
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CHALLENGE BRIEF
• Develop an open source conformance checker that:– checks if a file complies with standard specifications– checks if a file complies with the acceptance criteria of the memory institution– reports back to human and software agents – performs simple fixes
• Establish an ecosystem around an open source reference implementation that:– generates useful feedback for those who control software– advances improvement of the standard specification– advances development of new business cases for managing preservation files S
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THE PREFORMA OUTCOMES
• TI/A Standard Initiative:– Digital Humanities Lab / University of Basel– Agents Research Lab / University of Girona – Easy Innova
• DPF Manager
• VeraPDF Consortium:–Open Preservation Foundation–PDF Association–Digital Preservation Coalition
• PDF/A Validation
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MEDIACONCH
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GIF COURTESY ASHLEY BLEWER
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Project Advisors
CELLARCodec Encoding for LossLess Archiving and Realtime transmission CHAIRS:
TESSA FALLON TIM TERRIBERRY
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A LOOK FORWARD• MediaConch development:
–Asynchronous mode– UI Improvements– Statistics– Standardization– More conformance tests
• PREFORMA Runs until 2017 – user base in place–Including at Sound and Vision?
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TEST CORPUS
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WHAT YOU CAN DO• CELLAR participation• QC for all interfaces• Bug tracking, reporting• Documentation• Your weird video errors
BIT.LY/MEDIACONCHDOCSGITHUB.COM/MEDIAAREA/MEDIACONCH
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WORKSHOP
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THANK YOU!
PREFORMA-PROJECT.EU
MEDIAAREA.NET/MEDIACONCH@MEDIACONCH
[email protected] @ERWINVERB | @BENGLABS