VBrick dme Admin Manual page 142

Field
Input Streams
HLS Type
Playlist Length
130
Description
Use this area to define up to 4 input streams. If you select more than
one stream, they will be combined into a MBR HLS. Each stream, if
active, will also display its bitrate. Each stream has a hover icon to
popup the URL as well as a status.
There is a bitrate field, defaulted to "Auto", which will populate the
HLS playlist with the measured bitrate of the stream. In most cases,
the default option of Auto is recommended. However, entering a
Kbps into that field will override the measured bitrate and included
that within the HLS playlist.
Note: Each sub-stream will create an individual HLS and be
displayed in the MultiProtocol Connections page. There will also be
the master playlist which is the MBR stream.
Note: Changing any value for the first (index 1) input stream will
disassociate automatic Akamai distribution (if configured for this
stream on Rev.) Values in the 2nd through 4th can be changed
without impact to the Akamai distribution.
The number of video segments in a playlist is defined by the
Playlist Length. This field determines how the DME will handle
the generated segments:
• Rolling – the playlist will have a fixed length regardless of the
number of HLS segments generated. Segments will be added or
deleted to maintain a fixed playlist length.
• Appending – the Playlist Length is ignored and the DME creates
a continuously growing playlist. The maximum playlist duration is
seven days.
Note 1: Multiple appending playlists may use a large amount of
disk space unnecessarily. Use this option only if you will need to
return to the beginning of the playlist.
Note 2: The entire playlist will be deleted if you "disable" HLS
generation (on the "HLS Streaming" page). When the stream is
active, the playlists and associated segments can be extracted via
FTP.
The number of segments to include in a playlist. Default = 10. This
value is used to enable scroll back in the client player. You can scroll
back up to the number of segments specified here. Be aware that this
function uses disk space for segments that may never be viewed.
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