Grandstream Networks GXV34 0 Series

Video FEC Mode
If set to 0, FEC is not sent by separate port. If set 1, FEC is sent by separate port.
Default setting is 0.
FEC Payload Type Congures FEC payload type. The range is 96-126. Default setting is 120.
Packetization Mode
Set video packetization mode. If set to “Single NAL Unit Mode”, the packetization mode will be
negotiated as single NAL unit mode when dial video calls, if the other party does not support the
negotiation, then single NAL unit mode will be used for video encoding by default. If set to “Non-
Interleaved Mode”, the packetization mode will be negotiated as Non-interleaved mode when dial
video calls, If the other party does not support negotiation, then the Non-interleaved mode will be
used for for video encoding by default; If set to “Prefer Non-Interleaved Mode”, the packetization
mode will be negotiated as prefer Non-interleaved mode when dial video calls, if the other party
does not support the negotiation, then prefer Non-interleaved mode will be used for video
encoding by default.
H.264 Image Size
Sets the H.264 image size. It can be selected from the dropdown list.
720P
● 720P
● 4CIF
● VGA
● CIF
● QVGA
● QCIF
Note: For some network environment, the default setting “720P” might be too high that causes no
video or video quality issue during video call. In this case, please change “H.264 Image Size” to
“VGA” or “CIF” and change “Video Bit Rate” to “384kbps” or lower. The default setting is 720P.
Use H.264 Constrained
Proles
Congures that whether to set H.264 constrained proles.
The default setting is “No” .
H.264 Prole Type
Selects the H.264 prole type from the dropdown list.
● Baseline Prole
● Main Prole
● High Prole
● BP/MP/HP(Default Setting)
Note: Lower levels are easier to decode, but higher levels offer better compression. Usually, for the
best compression quality, choose “High Prole”; for playback on low-CPU machines or mobile
devices, choose “Baseline Prole”. If “BP/MP/HP” is selected, all three proles “Baseline Prole”
“Main Prole” and “High Prole” will be used for negotiation during video decoding to achieve the
best result. This is usually used in video conference when there is higher requirement on the video.
Video Bit Rate
Congures the bit rate for video call. It can be selected from the dropdown list. The default setting
is 2048 kbps. The valid range is from 32 – 2048 kbps.
Note:The video bit rate can be adjusted based on the network environment. Increasing the video
bit rate may improve video quality if the bandwidth is permitted. If the bandwidth is not permitted,
the video quality will decrease due to packet loss. For some network environment, the default
setting “720P” might be too high that causes no video or video quality issue during video call. In
this case, please change “H.264 Image Size” to “VGA” or “CIF” and change “Video Bit Rate” to
“384kbps” or lower.
SDP Bandwidth Attribute
Sets the SDP bandwidth attribute. It can be selected from the drop-down list. The default setting is
“Media Level”.
● Standard:use AS format in session level; use TIAS format in media level
● Media Level:use AS format in media level.
● Session Level:use AS format in session level.
● None:no modications in the session format.
Note: Please do not modify this setting without knowing the session format supported by the
server. Otherwise, it might cause video decoding failure.