Class: AVAssetTrack

Inherits:

NSObject

• Object
• NSObject
• AVAssetTrack

show all

Overview

Instance Attribute Summary (collapse)

• - asset readonly

  The asset of which the track is a part.

• - availableMetadataFormats readonly

  An array containing the metadata formats available for the track.

• - commonMetadata readonly

  An array of AVMetadataItem objects for each common metadata key for which a value is available.

• - enabled readonly

  Indicates whether the track is enabled according to state stored in its container or construct.

• - estimatedDataRate readonly

  The estimated data rate of the media data referenced by the track, in bits per second.

• - extendedLanguageTag readonly

  The language tag associated with the track, as an RFC 4646 language tag.

• - formatDescriptions readonly

  The formats of media samples referenced by the track.

• - languageCode readonly

  The language associated with the track, as an ISO 639-2/T language code.

• - mediaType readonly

  The media type for the track.

• - naturalSize readonly

  The natural dimensions of the media data referenced by the track.

• - naturalTimeScale readonly

  A timescale in which time values for the track can be operated upon without extraneous numerical conversion.

• - nominalFrameRate readonly

  The frame rate of the track, in frames per second.

• - playable readonly

  Indicates whether the track is playable in the current environment.

• - preferredTransform readonly

  The transform specified in the track’s storage container as the preferred transformation of the visual media data for display purposes.

• - preferredVolume readonly

  The volume specified in the track’s storage container as the preferred volume of the audible media data.

• - segments readonly

  The time mappings from the track’s media samples to the timeline of the track.

• - selfContained readonly

  Indicates whether the track references sample data only within its storage container.

• - timeRange readonly

  The time range of the track within the overall timeline of the asset.

• - totalSampleDataLength readonly

  The total number of bytes of sample data required by the track.

• - trackID readonly

  The persistent unique identifier for this track of the asset.

Instance Method Summary (collapse)

• - hasMediaCharacteristic:

  Returns a Boolean value that indicates whether the track references media with the specified media characteristic.

• - metadataForFormat:

  An array of metadata items, one for each metadata item in the container of the specified format.

• - samplePresentationTimeForTrackTime:

  Maps the specified track time through the appropriate time mapping and returns the resulting sample presentation time.

• - segmentForTrackTime:

  The track segment that corresponds to the specified track time.

Methods inherited from NSObject

#!, #!=, #!~, #, #==, #===, #=~, #Rational, #__callee__, #__method__, #__send__, #__type__, `, alloc, allocWithZone:, #autoContentAccessingProxy, autoload, autoload?, autorelease_pool, #awakeAfterUsingCoder:, binding, block_given?, caller, cancelPreviousPerformRequestsWithTarget:, cancelPreviousPerformRequestsWithTarget:selector:object:, catch, class, classFallbacksForKeyedArchiver, #classForCoder, #classForKeyedArchiver, classForKeyedUnarchiver, #clone, conformsToProtocol:, #copy, copyWithZone:, #dealloc, #define_singleton_method, description, display, #doesNotRecognizeSelector:, #dup, #enum_for, #eql?, #equal?, #extend, fail, #finalize, format, #forwardInvocation:, #forwardingTargetForSelector:, framework, #freeze, #frozen?, getpass, gets, global_variables, #init, initialize, #initialize_clone, #initialize_copy, #initialize_dup, #inspect, instanceMethodForSelector:, instanceMethodSignatureForSelector:, #instance_eval, #instance_exec, #instance_of?, #instance_variable_defined?, #instance_variable_get, #instance_variable_set, #instance_variables, instancesRespondToSelector:, isSubclassOfClass:, #is_a?, iterator?, #kind_of?, lambda, load, load_bridge_support_file, load_plist, local_variables, loop, #method, #methodForSelector:, #methodSignatureForSelector:, #methods, #mutableCopy, mutableCopyWithZone:, new, #nil?, open, p, #performSelector:onThread:withObject:waitUntilDone:, #performSelector:onThread:withObject:waitUntilDone:modes:, #performSelector:withObject:afterDelay:, #performSelector:withObject:afterDelay:inModes:, #performSelectorInBackground:withObject:, #performSelectorOnMainThread:withObject:waitUntilDone:, #performSelectorOnMainThread:withObject:waitUntilDone:modes:, print, printf, #private_methods, proc, #protected_methods, #public_method, #public_methods, #public_send, putc, puts, raise, rand, readline, readlines, #replacementObjectForCoder:, #replacementObjectForKeyedArchiver:, require, resolveClassMethod:, resolveInstanceMethod:, #respond_to?, #respond_to_missing?, select, #send, setVersion:, #singleton_methods, sprintf, srand, superclass, #taint, #tainted?, #tap, test, throw, #to_plist, #to_s, trace_var, trap, #trust, #untaint, untrace_var, #untrust, #untrusted?, version