MGW Diamond Multi-Channel HEVC and H.264 Portable Encoder
User Manual, Version 1.6 43
Overhead in data rate, added by 1D-FEC, can be calculated by following formula:
• FEC Mode: Select the Forward Error Correction dimension mode: 1-D (only the column
checksums will be sent to the destination), or 2-D (checksums of both columns and rows will
be sent to the destination).
• Matrix Dimension: The specified FEC rows and FEC Columns from which row checksums and
column checksums will be generated (FEC algorithm = XOR). Displays the columns/rows
multiplying value of the column/rows. Matrix size value must be less than 100.
• Columns/Rows: Select the desired values for the selected FEC. For the column, value can
range from 1 to 20.
• 1-D Port Number: Enter the port number from through columns checksums will be sent.
• 2-D Port Number: Enter the port number from through rows checksums will be sent when 2-
D mode is selected.
The network bandwidth overhead for Pro-MPEG technology is fixed and is determined by the XOR matrix dimensions
and size selected values. Bandwidth overhead exists regardless of whether the network link has errors or not.
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