Transport Stream Pids - VBrick 9000 Admin Manual

Field
VBR RTP Media
Transmit Mode
FEC Column
Overhead (%)
FEC Row
Overhead (%)
Estimated FEC
Latency (ms)
Streams Page Topics:

Transport Stream Settings
Enable Forward Error Correction (FEC) on a Stream

Transport Stream PIDs

Transport Stream PIDs
The H.264 transport stream multiplexes the audio and video into a single synchronous bit
stream; a demultiplexer then extracts the elementary streams in part by looking for packets
with the same Packet ID. A PID is a 13-bit value in the transport packet header. All packets
belonging to the same elementary stream have the same PID embedded in the stream that
tells the receiver what to do with the packet. Transport Stream packets from the VBrick
encoder have the PIDs shown in Table 1 as defaults.
VBrick 9000 Encoder Admin Guide
Description
If the MPEG2TS stream
(Low, Medium, or High), this parameter defines how the RTP
encapsulated transport stream packets are sent over the network.
• Constant Rate – Default. With this option Media Datagrams are
sent at a constant rate. The number of transport stream packets per
Media Datagram varies from 0 to the max transport stream packets
per RTP datagram to accommodate the variation in Bit Rate.
Default value = 2.
• Constant Datagram Size – With this option RTP Media Datagrams
are sent with the Max Packet Size defined on the Encoder
Configuration > Global page. The rate at which the RTP Media
Datagrams are sent varies to accommodate the variation in Bit
Rate. Note: VBrick Support Services can explain how to enable
this option. It cannot be enabled from the VBAdmin interface.
Read-only. Shows the amount of overhead added to this stream as a
percentage of the total number of RTP packets sent by the stream.
The overhead is calculated as (1/ Number_of_FEC_columns * 100).
Read-only. Shows the amount of overhead added to this stream as a
percentage of the total number of RTP packets sent by the stream The
overhead is calculated as (1/ Number_of_FEC_rows * 100).
Read-only. The amount of time (in milliseconds) that will be added
due to the configured FEC settings. This latency is essentially the
equivalent of a fixed network delay.
is set to one of the variable settings
Mode
Encoder Configuration
87