Grass Valley NV8500 Series v.3.5 - Manual (Page 227)

211
NV8500 Series
User’s Guide
Streaming Protocol (SMPTE 2022-6:2012)
Parameter Specification Notes
UDP source port Yes
UDP dest. port Yes
UDP length Yes
UDP check sum No, set to 0 UDP payload check sum value, set to 0 for IPv4
RTP M Yes RTP marker bit, active high
RTP PT Yes, set to 98 (deci-
mal) RTP payload type, set to 98 (dec.) on Tx
RTP sequence num-
ber Yes Used for detecting lost and out-of-sequence packets, and
Rx buffer management
RTP timestamp Yes Used for detecting lost and out-of-sequence packets, and
Rx buffer management. Based on an asynchronous 27
MHz
clock.
RTP SSRC Set to 0 Synchronization source, unused in this release
2022 EXT No Extensions to the SMPTE header
2022 F Set to 1 Source format present
2022 VSID Set to 0 Video source ID = primary
2022 Fcnt Yes Video frame count
2022 R Set to “not locked” Reference clock for video time stamp
2022 S Set to “not scram-
bled” Payload scrambling control
2022 FEC Set to 0 for “no FEC” FEC usage indicator
2022 CF Yes, must be non-
zero Clock frequency of video time stamp. CF = 0 (meaning no
time stamp) is not supported in this release.
2022 MAP Yes Indicates top-level mapping structure
2022 FRAME Yes Indicates frame structure
2022 FRATE Yes Indicates frame rate
2022 SAMPLE Yes Indicates pixel sample structure
2022 FMT RSV Set to 0 Reserved, set to 0