|
|
| (58 intermediate revisions by the same user not shown) |
| Line 1: |
Line 1: |
| − | =Multimedia=
| + | <center> |
| − | ==Converter software==
| + | '''[[SUNScholar/Digitisation|Back to Digitisation]]''' |
| − | ===For Microsoft=== | + | </center> |
| − | * http://www.longtailvideo.com/support/blog/12633/an-overview-of-audio-and-video-transcoding | + | ===Introduction=== |
| − | * http://www.nchsoftware.com/index.html
| + | *http://staff.lib.sun.ac.za/~hgibson |
| − | * http://winff.org
| + | ===[[SUNScholar/Digitisation/Digital Formats/Open|Open Formats]]=== |
| | + | ===[[SUNScholar/Digitisation/Digital Formats/Closed|Closed Formats]]=== |
| | + | ===[[SUNScholar/Digitisation/Digital Formats/Other|Reference]]=== |
| | | | |
| − | ===For Linux=== | + | ===Software=== |
| − | * http://www.gnomefiles.org/app.php/OggConvert | + | *http://en.wikipedia.org/wiki/WinFF |
| − | * http://www.linuxrising.org/transmageddon | + | *http://www.preforma-project.eu |
| − | * http://programmer-art.org/projects/arista-transcoder | + | *http://www.xnview.com |
| | + | *http://www.mirovideoconverter.com |
| | + | *https://sites.google.com/site/ffmulticonverter/home |
| | + | *http://jhove.openpreservation.org |
| | | | |
| − | ==Open Codecs== | + | ===News=== |
| − | * http://xiph.org
| + | *http://blogs.loc.gov/digitalpreservation/2016/01/odf-the-open-document-format |
| − | * http://www.webmproject.org
| |
| − | * http://code.google.com/speed/webp
| |
| − | * http://playfreedom.org
| |
| − | | |
| − | ==Audio==
| |
| − | * http://en.wikipedia.org/wiki/Comparison_of_audio_codecs | |
| − | | |
| − | ==Video==
| |
| − | * http://en.wikipedia.org/wiki/Comparison_of_video_codecs
| |
| − | | |
| − | ==Images==
| |
| − | * http://en.wikipedia.org/wiki/Comparison_of_graphics_file_formats
| |
| − | | |
| − | ==Container Formats==
| |
| − | * http://en.wikipedia.org/wiki/Comparison_of_container_formats
| |
| − | | |
| − | =Documents=
| |
| − | * http://en.wikipedia.org/wiki/The_Document_Foundation
| |
| − | * http://documentfreedom.org
| |
| − | * http://www.pdfa.org
| |
| − | * http://en.wikipedia.org/wiki/PDF/A
| |
| − | * http://officeshots.org
| |
| − | ;Comments
| |
| − | <pre>
| |
| − | Dear Hilton,
| |
| − | | |
| − | I would advise that you adopt open (i.e. non-propriety) standards, as these have the best chance of remaining readable in the long-term future.
| |
| − | Propriety formats are dependent on the continuing existence of the firm who markets them, as well as the continued support by this firm, even if they continue to exist.
| |
| − | This is in my opinion very risky.
| |
| − | | |
| − | For documents I am aware of an ISO standard that is targeted at archival, known as PDF/A (see www.pdfa.org).
| |
| − | | |
| − | For audio and video the situation is less developed, and there are as far as I know no standards specifically for archival.
| |
| − | In both cases I would recommend that data be saved without lossy compression, and again that open standards be sought.
| |
| − | Hence mp3 and WMV should be avoided, both because they are based on lossy compression and are are propriety.
| |
| − | The audio format FLAC on the other hand is open and does not employ lossy compression.
| |
| − | | |
| − | I hope this is of help,
| |
| − | Best regards,
| |
| − | Thomas Niesler.
| |
| − | | |
| − | ------------------------------------------------
| |
| − | Prof. Thomas Niesler
| |
| − | Digital Signal Processing Group
| |
| − | Department of Electronic Engineering
| |
| − | University of Stellenbosch
| |
| − | Private Bag X1, Stellenbosch 7602, South Africa
| |
| − | Phone: +27 21 8084118
| |
| − | Fax: +27 21 8084981
| |
| − | Email: trn@dsp.sun.ac.za
| |
| − | </pre>
| |
| − | | |
| − | =Microfiche=
| |
| − | * http://www.fctec.co.za
| |
| − | =Software=
| |
| − | * http://www.fsf.org and http://www.opensource.org
| |
| − | | |
| − | =Data Sets=
| |
| − | * http://en.wikipedia.org/wiki/Sql
| |
| − | * http://en.wikipedia.org/wiki/Comparison_of_relational_database_management_systems
| |
| − | * http://en.wikipedia.org/wiki/Comparison_of_database_tools
| |
| − | | |
| − | =Engineering drawings=
| |
| − | See: http://www.opendesign.com
| |
| − | | |
| − | =[[SUNScholar/Metadata|Metadata]]=
| |
| − | Click on the heading above.
| |
| − | | |
| − | =Language=
| |
| − | * http://en.wikipedia.org/wiki/UTF-8
| |
| − | * http://en.wikipedia.org/wiki/Langauge_codes
| |
| − | * http://www.loc.gov/standards/iso639-2/php/code_list.php
| |
| − | | |
| − | =Digitisation Guidelines=
| |
| − | {| class="wikitable" border="1" style="text-align:center;1px"
| |
| − | ! Media type !! Resolution !! Bit depth !! Enhancements Allowed
| |
| − | |-
| |
| − | | Printed text || 300 dpi || Bitonal || Sharpening, descreening, cropping, deskewing, despeckling
| |
| − | |-
| |
| − | | Rare/ damaged printed text || 400 dpi || 8-gray or 24 colour || Contrast stretching; Minimal adjustments for tone and colour
| |
| − | |-
| |
| − | | Book illustrations || 400 - 600 dpi with enhancement || 8-gray or 24 colour; Bitonal || Contrast stretching; Minimal adjustments for tone and colour; Descreen/ rescreen, sharpen
| |
| − | |-
| |
| − | | Manuscripts || 300 - 500 dpi with enhancement || 8-gray or 24 colour || Contrast stretching; Minimal adjustments for tone and colour
| |
| − | |-
| |
| − | | Maps and other oversized items || 300 - 400 dpi || 8-gray or 24 colour || Contrast stretching; Minimal adjustments for tone and colour
| |
| − | |-
| |
| − | | Graphic Art || 400 - 600 dpi || 8-bit/ channel internal reduction || Contrast stretching; Minimal adjustments for tone and colour
| |
| − | |-
| |
| − | |}
| |
| − | | |
| − | ;Please note:
| |
| − | * All archival material to be digitised in tiff format
| |
| − | * Tiff copy together with derivated png or any additional copies to be submitted to SUNScholar
| |
| − | * Document provenance metadata:
| |
| − | ** dc.description.provenance e.g. Original scanned in at 600 dpi, 100% DigiBook 10000 RGB colour, downsized to 840 pixels in width, resolution 250. Web version done automatically by PhotoShop 7 software. Downloading time approx. 26 seconds. Date done March - April 2007.
| |
| − | | |
| − | =Common Closed Digital Formats=
| |
| − | See: http://patentabsurdity.com and http://en.swpat.org
| |
| − | ==Documents==
| |
| − | All the Microsoft document formats are closed.
| |
| − | | |
| − | This is a huge problem for [[SUNScholar/Digital_Preservation|digital preservation]].
| |
| − | * http://www.digitalpreservation.gov/formats/intro/intro.shtml
| |
| − | * http://en.wikipedia.org/wiki/Comparison_of_Office_Open_XML_and_OpenDocument
| |
| − | | |
| − | ==Multimedia==
| |
| − | All the Microsoft media formats are closed.
| |
| − | | |
| − | This is a huge problem for [[SUNScholar/Digital_Preservation|digital preservation]].
| |
| − | * http://en.wikipedia.org/wiki/Windows_Media_Audio
| |
| − | * http://en.wikipedia.org/wiki/Windows_Media_Video
| |
| − | ;Other closed media formats
| |
| − | * http://en.wikipedia.org/wiki/Category:Open_formats_closed_by_software_patents
| |
| − | * http://en.wikipedia.org/wiki/Mp3 (Lossy audio codec, many patent trolls)
| |
| − | * http://en.wikipedia.org/wiki/Advanced_Audio_Coding (Lossy audio codec, many patent trolls)
| |
| − | * http://en.wikipedia.org/wiki/Mpeg4 (Lossy video codec, many patent trolls)
| |
| − | * http://en.wikipedia.org/wiki/Jpeg (Lossy image codec, many patent trolls)
| |
| − | * http://en.wikipedia.org/wiki/Tagged_Image_File_Format (Lossless image codec, many patent trolls)
| |
| − | * http://en.wikipedia.org/wiki/Flash_Video (Closed format multimedia container, many patent trolls)
| |
