Identifying content in an AWS Elemental Link source

The content in an AWS Elemental Link source is always a transport stream (TS) that contains one video asset, one audio pair, and optional captions.

Obtain identifying information from the content provider.

Asset	Details	Format of information to obtain
Video	You don't need identifying information. MediaLive always extracts the single video asset.	None
Audio	The source might include multiple audio tracks, typically, one for each language.	Obtain the numbers and languages of the tracks. For example, "track 1 is French".
Captions	ARIB	You don't need any information. With ARIB captions, MediaLiveextracts all the languages.
	Embedded	Obtain the languages of the channels. For example, "channel 1 is French".
	Teletext	If your plan for teletext captions is to convert the captions to a different format, you must obtain the page numbers for the languages that you want to convert. If you plan to pass through the captions as Teletext in the output, you don't need any identifiers.

Also obtain the following information about the content:

• The maximum bitrate. You will have the option to throttle this bitrate when you set up the device in MediaLive. For more information, see Setting up AWS Elemental Link.

• Whether the content includes an embedded timecode. If it does, you can choose to use that timecode. For more information, see Timecode configurationWorking with timecodes and timestamps.

• Whether the content includes ad avail messages (SCTE-104 messages that MediaLive will automatically convert to SCTE-35 messages). For more information about ad avail messages, see Processing SCTE 35 messages.