MatroskaVideoTrack class

MatroskaVideoTrack class

Represents video metadata in a Matroska video.

Inheritance: MatroskaVideoTrack → MatroskaTrack → MatroskaBasePackage → CustomPackage → MetadataPackage

The MatroskaVideoTrack type exposes the following members:

Properties

Property Description
metadata_type Gets the metadata type.
keys Gets a collection of the metadata property names.
property_descriptors Gets a collection of descriptors that contain information about properties accessible through the GroupDocs.Metadata search engine.
count Gets the number of metadata properties.
track_number Gets the track number as used in the Block Header.
Using more than 127 tracks is not encouraged, though the design allows an unlimited number.
track_uid Gets the unique ID to identify the Track.
This SHOULD be kept the same when making a direct stream copy of the Track to another file.
track_type Gets the type of the track.
flag_enabled Gets the enabled flag, true if the track is usable.
default_duration Gets the number of nanoseconds (not scaled via MatroskaSegment.timecode_scale) per frame.
name Gets the human-readable track name.
language Gets the language of the track in the Matroska languages form.
This Element MUST be ignored if the MatroskaTrack.language_ietf Element is used in the same TrackEntry.
language_ietf Gets the language of the track according to BCP 47 and using the IANA Language Subtag Registry.
If this Element is used, then any MatroskaTrack.language Elements used in the same TrackEntry MUST be ignored.
codec_id Gets an ID corresponding to the codec.
codec_name Gets a human-readable string specifying the codec.
flag_interlaced Gets a flag to declare if the video is known to be progressive or interlaced and if applicable to declare details about the interlacement.
field_order Gets declare the field ordering of the video.
If FlagInterlaced is not set to 1, this Element MUST be ignored.
stereo_mode Gets the stereo-3D video mode.
alpha_mode Gets the alpha Video Mode.
Presence of this Element indicates that the BlockAdditional Element could contain Alpha data.
pixel_width Gets the width of the encoded video frames in pixels.
pixel_height Gets the height of the encoded video frames in pixels.
pixel_crop_bottom Gets the number of video pixels to remove at the bottom of the image.
pixel_crop_top Gets the number of video pixels to remove at the top of the image.
pixel_crop_left Gets the number of video pixels to remove on the left of the image.
pixel_crop_right Gets the number of video pixels to remove on the right of the image.
display_width Gets the width of the video frames to display.
Applies to the video frame after cropping (PixelCrop* Elements).
display_height Gets the height of the video frames to display.
Applies to the video frame after cropping (PixelCrop* Elements).
display_unit Gets the how MatroskaVideoTrack.display_widthand MatroskaVideoTrack.display_height are interpreted.

Methods

Method Description
contains(self, property_name) Determines whether the package contains a metadata property with the specified name.
find_properties(self, specification) Finds the metadata properties satisfying a specification.
The search is recursive so it affects all nested packages as well.
update_properties(self, specification, value) Updates known metadata properties satisfying a specification.
The operation is recursive so it affects all nested packages as well.
remove_properties(self, specification) Removes metadata properties satisfying a specification.
add_properties(self, specification, value) Adds known metadata properties satisfying the specification.
The operation is recursive so it affects all nested packages as well.
set_properties(self, specification, value) Sets known metadata properties satisfying the specification.
The operation is recursive so it affects all nested packages as well.
This method is a combination of MetadataPackage.add_properties and MetadataPackage.update_properties.
If an existing property satisfies the specification its value is updated.
If there is a known property missing in the package that satisfies the specification it is added to the package.
sanitize(self) Removes writable metadata properties from the package.
The operation is recursive so it affects all nested packages as well.

Remarks

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See Also

MatroskaTrack class MovAtom class