Sets the duration of the currently playing media. Subclass can use this
when it is able to determine duration and/or notices a change in the media
duration. Alternatively, if @interval is non-zero (default), then stream
duration is determined based on estimated bitrate, and updated every @interval
frames.
Sets the duration of the currently playing media. Subclass can use this when it is able to determine duration and/or notices a change in the media duration. Alternatively, if @interval is non-zero (default), then stream duration is determined based on estimated bitrate, and updated every @interval frames.