ThumbnailTrack
@objcMembers
@objc(BMPThumbnailTrack)
public class ThumbnailTrack : TrackDescribes a thumbnail track.
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                  Creates a new thumbnail track based on the given URL and provided metadata. DeclarationSwift public init( url: URL, label: String, identifier: String, isDefaultTrack: Bool )ParametersurlThe URL to the timed file, i.e. WebVTT file. labelThe label for this track. identifierThe unique identifier for this track. isDefaultTrackIf set to true, this track would be considered as default.Return ValueA new ThumbnailTrackinitialized with the given thumbnail URL and the provided metadata.
 ThumbnailTrack Class Reference
      ThumbnailTrack Class Reference