NCast Presentation Recorder Reference Manual
network jitter and latency, but, depending on network connection, it can cause packet loss and
bottlenecks. If burst network transmission is acceptable, it is possible to disable this option to get extra
low video latency. This is a video encoder option - it doesn't affect the decoder.
4.7.3. Set Max Audio Frames in Packet
Sets how many AAC frames can be sent in one packet. The default value is 8. The valid range is from 1
to 10. Lower values result in lower network jitter and lower latency, but higher network overhead (each
packet contains additional headers). Set to 1 to achieve extra low audio latency. This is an audio encoder
option - it doesn't affect the decoder.
4.7.4. Set TTL
The time-to-live defines the number of router hops that will be valid for a packet. When the number of
hops is exceeded, the packet is discarded. The minimum value for this field is 1, and a value of 127 or
greater should be used for global transmission.
In some multicast networks TTL defines the “scope” or boundary conditions for containment of the
multicast traffic flow. The following table lists commonly accepted values of TTL used in this manner.
TTL
Scope
0
Restricted to the same host. Won't be output by any interface.
1
Restricted to the same subnet. Won't be forwarded by a router.
<32
Restricted to the same site, organization or department.
<64
Restricted to the same region.
<128
Restricted to the same continent.
<255
Unrestricted in scope. Global.
TTL scopes, however, have fallen into disfavor, and current practice recommends use of administratively
scoped addresses for containment of multicast traffic flows.
4.8. E
DIT
C
HANNEL
– RTMP S
TREAMING
4.8.1. Set RTMP Server Address
This Channel Type enables use of the RTMP (Flash Streaming) protocol for live broadcast to a
streaming server or CDN. Enter the name of the server or its IP address followed by the name of the
application instance used for this broadcast.
NCast Corporation
Revision 1.0
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