Class ISO14496_Box_TKHD
The Track Header Box specifies the characteristics of a single track.
Exactly one Track Header Box is contained in a track.
In the absence of an edit list, the presentation of a track starts at the beginning of the overall presentation. An empty edit is used to offset the start time of a track.
Located in /ISO14496/Box/TKHD.php (line 57)
ISO14496_Box | --ISO14496_Box_Full | --ISO14496_Box_TKHD
Inherited Variables
Inherited from ISO14496_Box_Full
ISO14496_Box_Full::$_flags
ISO14496_Box_Full::$_version
Inherited from ISO14496_Box
ISO14496_Box::$_reader
Constructs the class with given parameters and reads box related data from the ISO Base Media file.
- Reader $reader: The reader object.
- &$options
- ISO14496_Box_Full::__construct()
- Constructs the class with given parameters and reads box related data from the ISO Base Media file.
Returns the creation time of this track in seconds since midnight, Jan. 1, 1904, in UTC time.
Returns the duration of this track (in the timescale indicated in the
MVHD). The value of this field is equal to the sum of the durations of all of the track's edits. If there is no edit list, then the duration is the sum of the sample durations, converted into the timescale in the MVHD. If the duration of this track cannot be determined then duration is set to all 32-bit maxint.
Returns the track's visual presentation height. This needs not be the same as the pixel height of the images; all images in the sequence are scaled to this height, before any overall transformation of the track represented by the matrix. The pixel height of the images is the default value.
Returns the most recent time the track was modified in seconds since midnight, Jan. 1, 1904, in UTC time.
Returns a number that uniquely identifies this track over the entire life-time of this presentation. Track IDs are never re-used and cannot be zero.
Returns the track's visual presentation width. This needs not be the same as the pixel width of the images; all images in the sequence are scaled to this width, before any overall transformation of the track represented by the matrix. The pixel width of the images is the default value.
Inherited Methods
Inherited From ISO14496_Box_Full
ISO14496_Box_Full::__construct()
ISO14496_Box_Full::getFlags()
ISO14496_Box_Full::getVersion()
ISO14496_Box_Full::hasFlag()
ISO14496_Box_Full::setFlags()
ISO14496_Box_Full::setVersion()
ISO14496_Box_Full::__toString()
Inherited From ISO14496_Box
ISO14496_Box::__construct()
ISO14496_Box::addBox()
ISO14496_Box::constructBoxes()
ISO14496_Box::getBoxes()
ISO14496_Box::getBoxesByIdentifier()
ISO14496_Box::getContainer()
ISO14496_Box::getOffset()
ISO14496_Box::getOption()
ISO14496_Box::getOptions()
ISO14496_Box::getParent()
ISO14496_Box::getSize()
ISO14496_Box::getType()
ISO14496_Box::hasBox()
ISO14496_Box::isContainer()
ISO14496_Box::setContainer()
ISO14496_Box::setOffset()
ISO14496_Box::setOption()
ISO14496_Box::setOptions()
ISO14496_Box::setParent()
ISO14496_Box::setSize()
ISO14496_Box::setType()
ISO14496_Box::__get()
ISO14496_Box::__isset()
ISO14496_Box::__set()
ISO14496_Box::__toString()
ISO14496_Box::__unset()
TRACK_ENABLED
= 1
(line 81)
Indicates that the track is enabled. A disabled track is treated as if it were not present.
TRACK_IN_MOVIE
= 2
(line 84)
Indicates that the track is used in the presentation.
TRACK_IN_PREVIEW
= 4
(line 87)
Indicates that the track is used when previewing the presentation.
Documentation generated on Fri, 05 Sep 2008 20:19:47 +0300 by phpDocumentor 1.4.1