Video Tuning; Image Size; H.264 Encode - Datavideo NVS-25 Quick Start Manual

Video Tuning

For HDMI and CVBS inputs, set video brightness, contrast, hue and saturation on the
NVS-25. SDI video is usually adjusted on the source equipment before it is delivered to
the NVS-25. The values of brightness, contrast, hue and saturation range from 0 to 255
with the default programmed to 128.

Image Size

The first step of encoder setup is to adjust the image size. The NVS-25 allows you to
downscale the output image and set the SD aspect ratio at the input. The Scale Down
function, as the name suggests, allows the user to shrink the image size. The table
below shows all possible downscaled resolutions on NVS-25.
Original Resolution
1920x1080
1280x720
720x576

H.264 Encode

The H.264 standard can be viewed as a "family of standards" composed of different
profiles. A specific encoder encodes at least one, but not necessarily all profiles. The
NVS-25 offers the user three profiles: Main Profile 3.0, Main Profile 3.1 and High Profile
4.0.
H.264 Network Video Streaming Server
Downscaled Resolution
1280x720, 720x567, 720x480
720x576, 720x480
720x480
NVS-25
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