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DVD Output [VID-D3]

Record Type: Digital Moving Images from Video Source Material

Expected Use: Distribution Copy

Product Name: DVD Output [VID-D3]

Product Purpose: This product is an authored DVD previously served in the National Archives and Records Administration (NARA) research rooms as a distribution copy.

Nature of Source Material: Any MPEG-2 digital reproduction master file.

Possible File Derivatives: None.

Other Information: Previous delivery mechanism in the NARA research rooms for digitized moving images.

File Properties

Container Format

Container:

  • VOB (Video Object files) for Video and Audio Data

Essence Data:

  • MPEG-2
  • Program Stream
  • Main Profile Main Level
  • Top field first
File Specifications

Video data:

  • Video frame size: 720x480
  • Video mode: CBR
  • Video frame rate: 29.97
  • Interlaced
  • Single-pass encoding

Audio data:

  • Audio channels: 2 (stereo L R)
  • Audio bitrate: 256 Kbps
  • Audio mode: CBR
  • Audio codec: AC-3
  • Audio sample rate: 48 kHz
  • Bit depth: 16 bits

Typical file size: 60 MB/minute or 3.6 GB/hour

Quality Control

Quality Assurance and Quality Control for DVD Output Products

The Audio–Video Lab relies on visual and auditory quality control (QC) and spot checks to confirm completeness of DVD.

Rationale

Reproduction masters are at a high enough quality that they may be used in a production context. Distribution copies are at a low enough bitrate that they are able to be easily streamed or downloaded via an internet connection.

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