DVD Audio Extraction
Recovering audio content stored on DVDs, including data-based audio collections.
DVDs can contain audio as part of authored video discs or as ordinary audio files on data DVDs. The extraction method should be selected after identifying the disc structure.
Audio on DVD-Video
Audio may be embedded within an authored DVD-Video programme or stored as independent files on a data DVD.
Audio files on data DVDs
Identify the source structure before extraction. Do not assume that every DVD containing audio is a DVD-Audio disc or a standard video DVD.
Lossless extraction
Where the source contains PCM or another lossless audio representation, preserve the native data where practical. If the audio is embedded in video, retain the original video structure before making separate audio access derivatives.
Channel and sample-rate preservation
Metadata should identify the source disc, programme, track or file and any known technical characteristics.
Verification
Check channel configuration, sample rate, bit depth where applicable, duration and file integrity.
Reference guidance: This article is informed by optical-media preservation guidance from the U.S. National Archives and the Library of Congress Recommended Formats Statement. Where appropriate, the article distinguishes preservation guidance from practical extraction procedures.
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