User guide

ProMPEG FEC Support for IP Streaming
G.3 Configuration of ProMPEG FEC Outputs
G.3.1 ProMPEG FEC Mode
When ProMPEG FEC is enabled this setting allows the IP output to be configured to
work in FEC Column only mode or FEC Row and Column mode.
When either of these settings is selected the MPEG transport stream is set to
operate in RTP mode.
If FEC Column only mode is selected, a FEC stream is sent out on the same IP
address as the MPEG transport stream, but on the UDP destination port number two
higher than the MPEG transport stream.
If FEC Row and Column mode is selected, two FEC streams are sent out on the
same IP address as the MPEG transport stream. The column FEC stream is sent
out on the UDP destination port number two higher then the MPEG transport
stream, and the row FEC stream is sent out on the UDP destination port four higher
than the MPEG transport stream.
G.3.2 Number of Columns (L) Option
This setting configures the number of columns in the matrix, and determines the
number of MPEG packets used when calculating the row FEC packets.
G.3.3 Number of Rows (D) Option
This setting configures the number of rows in the matrix, and determines the number
of MPEG packets used when calculating the column FEC packets.
G.3.4 ProMPEG FEC Constraints
G.3.4.1 Matrix Limitations in Columns only mode:
L * D ≤ 100
1 ≤ L ≤ 20
4 ≤ D ≤ 20
G.3.4.2 Matrix Limitations in Rows and Columns mode:
L * D ≤ 100
4 ≤ L ≤ 20
4 ≤ D ≤ 20
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