Datavideo PTC-305 Instruction Manual page 54

Please see the following section for realizing the descriptions for each item for
the Video option.

50Hz (PAL): If you select this option, the maximum frame rate per
second (FPS) for the streaming video will be 50.

60Hz (NTSC): If you select this option, the maximum frame rate per
second for the streaming video will be 60.

Dial Priority: If you select this option, the maximum frame rate per
second will be 30, and it is possible that the parameters including the
video format and frame rate will be affected by the camera OSD menu
settings.
Note:
1. If you want to use the PTC-305camera to connect to some Datavideo
switchers which support the interlace format only such as the HS-1300, SE-120
MU and SE-650, please remember to select the "Dial Priority" option as your
video format.
2. If the 50Hz or the 60Hz is selected for the PTC-305web UI, the SDI or the
HDMI output format of the PTC-305camera will be fixed at 1080p 50/60.
Items
Video Format
It can support three video
formats including 50Hz(PAL),
60Hz(NTSC) and Dial Priority.
Encode Level
It allows users to select
needed Encode Level from
two Encode Levels including
mainprofile and highprofile.
Encode Protocol（First
Stream & Second Stream）
It allows users to select three
Encode Protocols including
H.264, H.265 and MJPEG for
the "First Stream" and
"Second Stream".
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Descriptions