File Formats and File Sizes

SCOLR allows the upload of any discrete file formats including audio, video, text and image files. Additionally, media can be streamed from third-party services like YouTube or Vimeo. PDF-A format is preferred for text documents. Other text formats will be converted to PDF-A prior to uploading to the public site. Files should not be larger than 2 GB. If a submission is larger than this, the depositor should consult with library staff before submission.

Preservation of File Formats

As per section XI of the SCOLR Guidelines, the Selkirk College Library will use standard data management practices to protect the items stored in SCOLR. The database will be backed up regularly and will be kept secure against unauthorized deletion or modification.
The Selkirk College Library will take all possible steps to assure continuing access to items deposited in SCOLR. Every item deposited will remain retrievable from the repository. However, computer files depend on the availability of the appropriate software to render the functions and appearance intended by the file’s creator; over time older software applications may no longer function on new computer platforms, leaving the files created with those applications inoperable. The level of access that the Library can assure to items stored in SCOLR may therefore range from preservation of the full functionality an appearance of the original file to preservation of the mere bit stream with no assurance that the file’s original functionality or appearance can be recreated.
In general, files created with open or non-proprietary software offer the greatest likelihood that their functionality and appearance can continue to be rendered as computer environments change. Faculty and other creators of digital content are urged to carefully consider the implications of choosing one or another file format or software application, and to balance the importance of the functions provided by a software application against the importance of being able to preserve those functions over a period of years or decades. The Library identifies three level of support for the various digital file types in SCOLR

  • Preferred: This is the preferred file type used by SCOLR
  • Supported: We support this file type. There is a high likelihood that its content, appearance, and functions will be preserved over time.
  • Known: We recognize this format but cannot guarantee its support over time.

Text formats

File Type Extension Support Level
Adobe PDF/A Portable Document Format .pdf Preferred
Open Document Text .odt, .ott Known
Open Office Writer .sxw Known
Rich Text Format .rtf Supported
Plain Text .txt Supported
eXtensible Mark-up language .xml Supported

Spreadsheet Formats

File Type Extension Support Level
Comma Separated Values .csv Supported
Microsoft Excel .xls, .xlsx Supported
Open Document Spreadsheet .ods, .ots Known
Open Office Calc .sxc Known

Presentation Formats

File Type Extension Support Level
Microsoft PowerPoint .ppt, .pptx Supported
Open Document Presentation .odp, .otp Known
Open Office Impress .sxi Known

Graphic Formats

File Type Extension Support Level
JPEG File Interchange Format .jpeg, .jpg Supported
JPEG 2000 .jp2 Supported
Tagged image file format .tif, .tiff Preferred
Open Office Draw .sxd Known
Open Document Graphics .odg, .otg Known
Portable Network Graphics .png Supported
Graphics Interchange Format .gif Supported
Windows Bitmap .bmp Supported

Audio Formats

File Type Extension Support Level
Waveform Audio Format .wav, .wave Supported
MGEG ½ Audio Layer 3 .mp3 Supported
MPEG-4 .mp4 Supported
MIDI Audio .mid Supported

Video Formats

File Type Extension Support Level
Quicktime .mov, .qt Supported
MPEG-4 .mp4 Supported
Ogg Vorbis Codec Compressed Multimedia File .ogg Known
iTunes video .m4v Known
Audio Video Interleaved .avi Supported
Matroska .mkv Known

If a file type is not listed here please contact SCOLR Administration.