Video Parameters

The parameters in the table are supported on the VVX 500/501, VVX 600/601, and VVX 1500, and Polycom Trio solution.

Table 1. Video Parameters

Template

Parameter

Permitted Values

Change Causes

Restart or Reboot

video.cfg

video.allowWithSource

Restricts sending video codec negotiation in Session Description Protocol (SDP).

0 (default)

0 or 1

This parameter applies only for VVX 500/501 and VVX 600/601.

No

video.cfg

video.autoFullScreen

0 (default) - Video calls use the full screen layout, only if explicitly selected by the user.

1 - Video calls use the full screen layout by default.

No

video.cfg

video.dynamicControlMethod

0 (default)

1 - The first I-Frame request uses the method defined by video.forceRtcpVideoCodecControl and subsequent requests alternate between RTCP-FB and SIP INFO.

To set other methods for I-frame requests, refer the parameter video.forceRtcpVideoCodecControl.

No

video.cfg

video.iFrame.delay

0 (default)

1 -10 seconds - Transmits an extra I-frame after the video starts.

The amount of delay from the start of video until the I-frame is sent is configurable up to 10 seconds.

Yes

video.cfg

video.iFrame.minPeriod

Time taken before sending a second I-frame in response to requests from the far end.

2 (default)

1 - 60

No

video.cfg

video.iFrame.onPacketLoss

0 (default)

1 - Transmits an I-frame to the far end when video RTP packet loss occurs.

No

video.cfg

video.iFrame.period.onBoard

Set the I-Frame interval used for the VC4 encoder.

180 (default)

300 maximum

No