Summary of Digitization Specifications

Digital Collections and Initiatives

  Archival Master File Optical capture resolution Bit depth Embedded color/gray profile Notes Production Master File Format Derivative File Format (AV only)
*Text-based
(*Image specs optimized for OCR)
Printed computer documents Uncompressed TIFF v.6 400 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2   JPEG 2000 (see recipes https://github.com/pulibrary/figgy/blob/master/config/config.yml#L12)  
Typed documents Uncompressed TIFF v.6 400 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2    
Printed publication matter Uncompressed TIFF v.6 400 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2    
Printed matter on microform Uncompressed TIFF v.6 *3500 PPI 8 Gray Gamma 2.2 *Accounts for magnification ratio  
Special collections on paper
Bound material Uncompressed TIFF v.6 Minimum 7200 px on long axis 24 Adobe RGB (1998)   JPEG 2000 (see recipes https://github.com/pulibrary/figgy/blob/master/config/config.yml#L12)  
Unbound material Uncompressed TIFF v.6 Minimum 7200 px on long axis 24 Adobe RGB (1998)    
Posters Uncompressed TIFF v.6 300 PPI, minimum 7200 px on long axis 24 Adobe RGB (1998)    
Scrolls Uncompressed TIFF v.6 Minimum 7200 px on short axis 24 Adobe RGB (1998)    
*Photographs Uncompressed TIFF v.6 Minimum 7200 px on long axis 24 Adobe RGB (1998) *Includes prints, photogravure, lithographs, Daguerreotypes  
Special collections on microform Uncompressed TIFF v.6 *3500 PPI 8 Gray Gamma 2.2 *Accounts for magnification ratio  
Special collections on film
(For moving image film, see Audio and Moving Images section below.)
Film negatives up to 4"x5" Uncompressed TIFF v.6 3000 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2   JPEG 2000 (see recipes https://github.com/pulibrary/figgy/blob/master/config/config.yml#L12)  
Film positives up to 4"x5" Uncompressed TIFF v.6 3000 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2    
Glass negatives up to 4"x5" Uncompressed TIFF v.6 3000 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2    
Film negatives larger than 4"x5" Uncompressed TIFF v.6 2000 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2    
Film positives larger than 4"x5" Uncompressed TIFF v.6 2000 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2    
Glass negatives larger than 4"x5" Uncompressed TIFF v.6 2000 PPI 8/24 Adobe RGB (1998)/Gray Gamma 2.2    
Maps
Maps Uncompressed TIFF v.6 400 PPI, minimum 7200 px on long axis 24 Adobe RGB (1998)   JPEG 2000 (see recipes https://github.com/pulibrary/figgy/blob/master/config/config.yml#L12)  
Historic maps Uncompressed TIFF v.6 400-600 PPI, minimum 7200 px on long axis 24 Adobe RGB (1998)    
Atlases Uncompressed TIFF v.6 400-600 PPI, minimum 7200 px on long axis 24 Adobe RGB (1998)    
Audio and Moving Images
Audio (analog source) Broadcast Wave (BWF) wrapper;linear PCM uncompressed24-bit bit-depth; 96kHz sampling rate   24     Broadcast Wave (BWF) wrapper;linear PCM uncompressed16-bit bit-depth; 44.1 kHz sampling rate MPEG Audio Layer 3 (MP3); 256Kbps bit rate; 44.1 kHz sampling rate
Audio (digital source) Broadcast Wave (BWF) wrapper; native uncompressed data at original sample rate (typically 44.1 or 48 kHz) and bit-depth (typically 16-bit) with original embedded metadata maintained   16     n/a MPEG Audio Layer 3 (MP3); 256Kbps bit rate; 44.1 kHz sampling rate
Video (analog source) FFV1 version 3 in Matroska (MKV) wrapper (4:2:2 YUV, 10-bit bit depth) with linear PCM uncompressed audio encoding (24-bit bit-depth; 48kHz sampling rate)   24     50 Mbps MPEG-2 in a 4:2:2 format MPEG-4 H.264 video
Video (digital source) preserve original codec in Matroska (MKV) wrapper, with original embedded metadata maintained   bit depth of source     n/a MPEG-4 H.264 video
Film DPX Wrapper10-bit LOG; RGB 4:4:4; with uncompressed linear PCM audio encoding (24-bit bit-depth; 96kHz sampling rate)   24   In cases where DPX is not warranted, follow standards for analog video. QuickTime ProRes 422 HQ MPEG-4 H.264 video