ENC-300-HDSDI
™ H.264 HD Encoder
User Guide V1.5
72
On real networks there is no 100% probability, that a packet reaches its desired destination, that
means: the probability that a packet gets lost is >0%. The worse the network is the higher is the
probability of lost packets.
If you transmit a MPEG-TS with 8 Mbit/sec data rate without FEC, each lost packet could cause
visible/audible effects. With FEC, you would expect one unrecoverable packet approx. all 2 weeks.
The DEC-300 auto configures itself to the FEC parameters used in the incoming stream. Only
‘RTP/FEC’ as transport protocol, the used ‘FEC Dimension’ and the source IP-address with port must
be set on the DEC-300.
.!.
For the lowest overhead (+5%) Teracue recommends using on the ENC-300
a ‘FEC
Rows’ value of ‘20’, a ‘FEC Columns’ value of ‘5’, the ‘1D-FEC’ dimension and ‘Block
Aligned’ as ‘FEC Traffic Shaping’.
