VCR User Manual

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For example, if all participants in the conference
were watching a single participant at full screen,
no other participants' video streams would be
needed at all. So the IP VCR would request that
those streams were sent at a low bit rate in order
to avoid needless use of network bandwidth.
If the receive bit rate has been limited to below
the maximum channel bit rate, the reason for this
limitation can be seen by moving over the
icon.
Received jitter
Represents the variation in video packet at arrival
time at the IP VCR.
Packets received
The number of video packets destined for the IP
VCR from this endpoint
Packet errors
Video packet-level errors such as sequence
discontinuities, incorrect RTP details, and so on.
This is not the same as packets where the content
(the actual video data) is somehow in error.
This value does not represent packets in which
the actual video data in the packets is in error.
Frame rate
The frame rate of the video stream currently
being received from the endpoint.
Frame errors
The number of frames with errors versus the total
number of video frames received.
Transmit stream
The codec, size and type of video being sent from
the IP VCR to the endpoint.
Transmit
address
The IP address and port of the device to which the
IP VCR is sending video.
Encryption
Whether or not encryption is being used on the
video transmit stream to this endpoint.
This field will only appear if the encryption key is
present on the IP VCR.
Channel bit rate
The negotiated available bandwidth for the IP
VCR to send video to the endpoint in.
Transmit bit rate
The bit rate the IP VCR is attempting to send at
this moment, which may be less than the channel
bit rate which is an effective maximum. The
actual bit rate, which is simply the measured rate
of video data leaving the IP VCR, displays in
parentheses.
The Transmit bit rate value might be less than the
Channel bit rate if :
• the remote endpoint receiving the video
stream from the IP VCR has sent flow
control commands to reduce the bit rate
• it has been necessary to reduce the
primary video bit rate to allow sufficient
bandwidth for a H.239 video stream
If the transmit bit rate has been limited to below
the maximum channel bit rate, the reason for this
limitation can be seen by moving over the
icon.
Packets sent
The number of video packets sent from the IP