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In this case the limitations depend on the capabilities of the underlying decoders provided by the platform, which in turn depend on the capabilities of the device itself. The MediaCodecVideoTrackRenderer and MediaCodecAudioTrackRenderer classes provided by ExoPlayer are most commonly used. The codec and performance limitations of the TrackRenderers that will render the media.The HLS specification defines DEFAULT, FORCED and AUTOSELECT tags that can be used in HLS master playlists to achieve similar results. For example the Matroska container format supports a flag to indicate that a track should be selected by default given no other information (FlagDefault), as well as a flag to indicate that a track should always be selected (FlagForced). Track selection flags specified in the media itself.Here “sample format” means both the type of the format (e.g. The tracks that are present in the media and their sample formats.In order to perform a track selection it’s necessary to consider: These are all examples of track selection problems an area that we’re rethinking in ExoPlayer 2. Even for media that contains only a single track, ExoPlayer has to determine whether it supports the format in which the track is encoded, and what action to take if it does not. For adaptive video playbacks, ExoPlayer has to select the subset of video tracks that it wishes to play, and then switch between the selected tracks during playback according to some adaptive policy. If neither setup works for you, we'd love to hear your feedback.When a piece of media contains multiple tracks of a given type, for example multiple video tracks in different qualities or multiple audio tracks in different languages, ExoPlayer has to select which track of each type it wishes to play. You can choose which language each event should output in the Stream tab this is described in further detail below. The alternative is to simulcast from Studio to multiple destinations (e.g. Currently, neither Vimeo nor Livestream support this workflow, but you can learn more about how to set it up with Wowza here. If you wish to have a single stream where viewers can choose which language they hear in the destination player, your streaming provider will need to include a server that can accept MPEG-TS output. We’ve also tested the Behringer UMC404HD interface successfully. This can typically be achieved using an external audio mixer going into a camera, which then outputs SDI into your Studio system. You could also configure one language per channel with each one outputting to L and R). English in channels 1 and 2, Spanish in channels 3 and 4, and so on. To bring multiple languages into Studio, they must come in through a single input with multiple channels of audio (e.g.
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