qtdefaults(1)						    BSD General Commands Manual 					     qtdefaults(1)

NAME

     qtdefaults -- access the QuickTime Preferences

SYNOPSIS

     qtdefaults read LegacyAudioCodecsEnabled
     qtdefaults read LegacyVideoCodecs [<codec>]
     qtdefaults read InstalledLegacyVideoCodecs
     qtdefaults read TransportSettings
     qtdefaults read MimeSettings
     qtdefaults read MediaKeys [category]
     qtdefaults reset DownloadCache
     qtdefaults reset TransportSettings
     qtdefaults reset MimeSettings
     qtdefaults reset LegacyVideoCodecs
     qtdefaults write LegacyAudioCodecsEnabled <yes | no>
     qtdefaults write LegacyVideoCodecs <videocodec> <enabled | disabled>
     qtdefaults write MediaKeys <category> <key>
     qtdefaults write TransportSettings <protocol> <port>
     qtdefaults delete MediaKeys <category> <key>

DESCRIPTION

     qtdefaults allows users to read, write, reset and delete QuickTime user preferences from a command line shell.  The commands are as follows:

     read LegacyAudioCodecsEnabled
	      Prints whether legacy audio codecs are enabled for use in the export settings.

     read LegacyVideoCodecs <videocodec>
	      Prints whether the specified legacy video codec is enabled for use in the export settings.  It will print "enabled" if the codec is
	      enabled, "disabled" if disabled, or "unrecognized" if the codec is unknown.

     read LegacyVideoCodecs
	      Prints list of legacy audio codecs currently enabled for use in the export settings.

     read InstalledLegacyVideoCodecs
	      Prints out a list of all legacy video codecs installed in the current system.  This list includes both enabled and disabled video
	      codecs. These codec identifiers are used with 'qtdefaults read LegacyVideoCodecs' and 'qtdefaults write LegacyVideoCodecs'.

     read TransportSettings
	      Prints the transport settings being used by QuickTime for streaming media.

     read MimeSettings
	      Prints the MIME types currently being handled by the QuickTime plugin.

     read MediaKeys <category>
	      Prints the media keys being used by QuickTime to playback encrypted movies.  The optional <category> parameter can be used to list
	      only the media keys associated with the specified category.

     reset DownloadCache
	      Empties the cache being used by QuickTime to store downloaded content.

     reset TransportSettings
	      Resets QuickTime to automatically determine the best protocol and port for streaming media.

     reset MimeSettings
	      Resets QuickTime plug-in to handle the default MIME types.

     reset LegacyVideoCodecs
	      Disables all QuickTime legacy video codecs.

     write LegacyAudioCodecsEnabled <value>
	      A <value> of "yes" will enable the legacy audio codecs for use in the export settings and a <value> of "no" will disable them.

     write LegacyVideoCodecs <videocodec> <value>
	      A <value> of "enabled" will enable the specified legacy video codec for use in the export settings and a <value> of "disabled" will
	      disable it.

     write MediaKeys <category> <key>
	      Adds the media key specified by <category> and <key> values to the list of media keys used to playback encrypted movies.

     write TransportSettings [protocol [port]]
	      Sets QuickTime streaming to use the transport settings as specified by <protocol> and <port>.  Following are the recommended values
	      for <protocol> and <port>:
		    - To use HTTP, specify <protocol> = HTTP and <port> = 80
		    - To use UDP, specify <protocol> = UDP and either <port> = 554 or <port> = 7070

     delete MediaKeys <category> <key>
	      Deletes the media key specified by <category> and <key> if it exists.

SEE ALSO

     defaults(1)

MacOS X 							   June 2, 2019 							   MacOS X