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9.1. Multimedia

PDF 1.5 introduces a comprehensive set of language constructs to enable the following capabilities:

  • Arbitrary media types can be embedded in PDF files. (See implementation note 144 in Appendix H for a list of media types that are recommended for use with Acrobat 6.0 viewers).

  • Embedded media, as well as referenced media outside a PDF file, can be played with a variety of player software. (In some situations, the player software may be the viewer application itself.)

    Note

    The term playing can be used with a wide variety of media, and is not restricted to audio or video. For example, it may be applied to static images such as JPEGs.


  • Media objects may have multiple renditions, which can be chosen at play-time based on considerations such as available bandwidth.

  • Document authors can control play-time requirements, such as which player software should be used to play a given media object.

  • Media objects can be played in various ways; for example, in a floating window as well as in a region on a page.

  • Future extensions to the media constructs can be handled in an appropriate manner by current viewer applications. Authors can control how old viewers treat future extensions.

  • Document authors can adapt the use of multimedia to accessibility requirements.

  • On-line media objects can be played efficiently, even when very large.


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