10
Video scalers
●
The two video scalers scale down (or up) the full resolution progressive scan video stream:
●
The video scaler #1 delivers a video data stream having a resolution up to 1280 pixels wide
(720p).
●
The video scaler #2 deliver a video data stream having a resolution up to 640 pixels wide
(480p).
●
The video scalers are exposed to the user as additional encoders that have access to a
restricted set of resolutions.
Video encoders
●
There are three video encoders: one AVC (H.264), one HEVC (H.265) and one MJPEG encoder.
●
Multiple video encoders can be instantiated, processing either unscaled video streams, or one
of the video scalers output.
●
Free mixing of AVC (H.264) and HEVC (H.265) encoding is allowed as long as the total amount
of data to encode does not exceed 160 Mega-pixels per second.
Video Processing Capabilities
Property
Value
Note
AVC (H.264) encoded streams count
3
0 or 1 stream for each available resolution
(full, scaler #1, scaler #2)
Frame rate control
Yes
Total H.264/H.265 encoding power
[Mpixels/second]
160
Equivalent to 77 frames of 1920 x 1080 pixels
per second
H.264/H.265 encoding power requirements for some stream combinations
Programming Model
The application software manages the video processing resources using one ONVIF Media Profile
for each encoded video stream.
An ONVIF Media Profile associates one
VideoSourceConfiguration
and one
VideoEncoderConfiguration
.
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1. Description
