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Letterbox
A) A television system that limits the recording or transmission of useful picture information to about three-quarters of the available vertical picture height of the distribution format (e.g., 525-line) in order to offer programme material that has a wide picture aspect ratio. b) Term generally used for the form of aspect ratio accommodation involving increasing vertical blanking. See Blanking Adjustment.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Software
- Category: Video editing
- Company: Tektronix
- Product:
- Acronym-Abbreviation:
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