Video Profile Parameters

These settings include a group of low-level video codec parameters.

For most use cases, the default values are appropriate. Polycom does not recommend changing the default values unless specifically advised to do so.

Table 1. Video Profile Parameters

Template

Parameter

Permitted Values

Change Causes

Restart or Reboot

video.cfg

video.profile.H261.annexD

1 (default) - Enables Annex D when negotiating video calls.

0 - Disables Annex D when negotiating video calls.

Yes

video.cfg

video.profile.H264.packetizationMode

Set to control the H.264 encoding and decoding capabilities on supported VVX business media phones.

0 (default) - Supports Single NAL unit mode.

For Incoming calls:
  • If the remote endpoint supports only Non-interleaved mode, the VVX business media phones reject the video with m line 0.
  • If the remote endpoint supports Single NAL Unit mode, then the VVX business media phones answers the incoming call with Single NAL mode.
For Outgoing calls:
  • In all outgoing calls, the VVX business media phones send packetization-mode=0 in the offer.

1 - Supports both Single NAL Unit mode and Non-Interleaved mode.

For Incoming calls:
  • The VVX business media phone answers both Single NAL Unit mode and Non-Interleaved mode.
For Outgoing calls:
  • The VVX business media phones send packetization-mode=0 and packetization-mode=1 in the offer.

No

video.cfg

video.profile.H264.payloadType

Specifies the RTP payload format type for H264/90000 MIME type.

109 (default)

96 to 127

Yes

video.cfg

video.profile.H264.profileLevel

Specifies the highest profile level within the baseline profile supported in video calls.

1.3 (default)

1, 1b, 1.1, 1.2, 1.3, and 2

VVX 500/501 and VVX 600/601 phones support H.264 with a profile level of 2, and VVX 1500 phones support H.264 with a profile level of 1.3.

Yes