NF Video Archiving Standards - noolahamfoundation/standards GitHub Wiki
| NF Video | Archiving Standards |
|---|---|
| Title | NF Video Archiving Standards - நூலக நிறுவனத்தின் காப்பகத் தரநிலைகள் |
| Document Type | Standards |
| Security Classification | Technology, RB |
| Department | NF Technology |
| Author (s) | |
| Approval | |
| Version | Draft 1 - April 17, 2015 |
The purpose of this document is to provide standards and guidelines for digitization, preservation and archiving of video records managed by Noolaham Foundation.
This document is intended for Management, Staff, Technology Team and RB.
As in any other media authenticity, quality, storage, record integrity, metadata, and software and hardware obsolescence are major technical challenges in creating, preserving and using video records. However, unlike other media, video is a very difficult and costly media to create, store, preserve and use. For example, “Uncompressed 1080i high-definition video recorded at 60 frames per second eats up 410 gigabytes per hour of video.” The technical challenges involved in transcoding and delivering video to end users is significant.
| Quality Measure | Description | Standard | Reasoning |
|---|---|---|---|
| Codec | JPEG2000 lossless or Uncompressed YCbCr | http://www.carli.illinois.edu/sites/files/digital_collections/documentation/guidelines_for_video.pdf | |
| Container Format | MXF | http://www.carli.illinois.edu/sites/files/digital_collections/documentation/guidelines_for_video.pdf | |
| Image/Frame Resolution |
SD = 640 x 480 resolution (assuming 4:3 original aspect ratio) HD = 1280 x 720 or 1920 x 1080 |
http://www.carli.illinois.edu/sites/files/digital_collections/documentation/guidelines_for_video.pdf | |
| Bit Depth | Indicates the quality of each pixel in a frame. | 30 bits ?? | http://www.carli.illinois.edu/sites/files/digital_collections/documentation/guidelines_for_video.pdf |
| Data Rate | |||
| Scanning Type | “Scanning in this context refers to the means in which the frame image is captured.” | Progressive | http://www.carli.illinois.edu/sites/files/digital_collections/documentation/guidelines_for_video.pdf |
| Audio Stream | Audio stream for | 48? Khz/24-bit PCM | |
|
“Frame rate” refers to the number of frames displayed per second during playback. | 30 frames for non films and 24 for films | |
|
"This value is a measurement of the amount of information delivered over a given period of time." | 30 MiB/s | |
|
Theora or WebM |
Embedded Technical Metadata can be generated using open source software such as MediaInfo.
Video Format
Video Codec ID
Video Bit Rate
Video Width
Video Height
Video Standard
Video Color Space
Video Frame Rate
Audio Format
Audio Codec ID
Audio Bit Rate
Audio Bit Depth
Audio Sampling
Audio Resolution
Format Extension
MIME Type
Format Version
File Size
Duration
File Modified Date
Encoded_Date
Tagged_Date
Encryption
Video transcoding is converting from one codec to another code. Master video files will needs to be transcoded into a code for distribution.
Digitization from Video Tape to Digital Files
http://library.nyu.edu/preservation/VARRFP.pdf
http://www.carli.illinois.edu/sites/files/digital_collections/documentation/guidelines_for_video.pdf
http://www.niso.org/apps/group_public/download.php/4237/IP_McLellan_Selecting_Formats_isqv22no2.pdf
http://blogs.loc.gov/digitalpreservation/2011/07/whither-digital-video-preservation/
https://docs.google.com/document/d/1eN70NGqYlUKLLJuVIer_DOISIq2qpcR3nlbK7yI8TLQ/edit?usp=sharing