Grandstream Networks GXV3240 Administration Manual page 58

Use H.264 Constrained
Profiles
H.264 Profile Type
Video Bit Rate
SDP Bandwidth
Attribute
•
CIF
•
QVGA
•
QCIF
The default setting is 720P.
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.
Configures that whether to set H.264 constrained profiles. Default setting
is "No".
Selects the H.264 profile type from the dropdown list.
•
Baseline Profile (Default setting)
•
Main Profile
•
High Profile
•
BP/MP/HP
Note: Lower levels are easier to decode, but higher levels offer better
compression.
Usually, for the best compression quality, choose "High Profile"; for
playback on low-CPU machines or mobile devices, choose "Baseline
Profile". If "BP/MP/HP" is selected, all three profiles "Baseline Profile" "Main
Profile" and "High Profile" 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.
Configures 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.
Sets the SDP bandwidth attribute. It can be selected from the drop down
list.
•
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
GXV3240 Administration Guide
Version 1.0.3.207
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58