Metadata¶
The data stream contains additional information about the program; this is called metadata: data about the data. Clicking the <Metadata information> icon allows you to select metadata sets associated with the video stream. Available metadata will vary depending on the specific channel.
Figure: Different channel metadata menus¶
Video and audio metadata displays the video codec, resolution, bits per second, frames per second and audio sampling frequency of each video stream. The audio status displays the metadata for selected active audio if the program includes multiple audio tracks such as English and Spanish.
If the closed caption display is turned on the CC: field lists details about CC; otherwise it is listed as: None.
Figure: Video and audio metadata¶
XDS if present in the video stream: displays the source, title and program rating.
Figure: XDS metadata¶
NAVE (Nielsen audio video encoder) watermark if the video stream carries a NAVE watermark, this option will display that metadata.
Figure: NAVE watermark¶
Audio loudness displays the audio regulatory environment from which the video stream originated. If the channel includes multiple audio versions the active one is displayed.
Figure: Audio loudness metadata¶
AC-3 is the technical name for Dolby digital audio compression. It has been standardized by the Advanced Television Systems Committee (ATSC), and is used for the efficient encoding of surround sound. If your video stream is carrying AC-3 information to create surround sound, choosing AC-3 will display that metadata.
Figure: AC3 metadata¶
AFD (active format description) is a standard set of codes for television or set- top-box decoders. AFD displays that metadata on your Video Stream. The AFD information instructs the MIS as to what specific format is being sent, either 4:3 or 16:9. Since programs can vary in format in a given stream, the MIS will use the AFD to adjust the format dynamically for display.
Figure: AFD metadata¶
DPI (digital program insertion) allows cable headends and broadcast affiliates to insert locally-generated commercials and short programs into remotely distributed regional programs before they are delivered to home users. If your video stream is displaying locally generated programming, you can see its parameters by observing the DPI metadata.
Figure: DPI metadata¶
Input name displays the name of the MIS input used to ingest the stream.
Figure: Input name metadata¶