Vivotek FD9167-H - Page 80

VIVOTEK
80 - User's Manual
With the H.265 codec in an optimal scenario and when Dynamic Intra frame is combined with
the Smart Stream function, an 80% of bandwidth saving can be achieved compared with using
H.264 without enabling these bandwidth-saving features.
■ Smart FPS
In a static scene, the algorithm re-encodes old frames when no motions occur in scene. When
motions occur, the encoding returns to normal to deliver real-time streaming.
f1 f1 f1
f1
f5 f5 f5 f5 f9
f1 f1 f1
f1
f5 f5 f5 f5 f9
f1 f1
f3
f4 f5 f6 f7 f8 f9
Motions Occur.
By queuing and re-encoding the old frames from a static scene, both the computing efforts and
the size of P frames are reduced. It is benecial for keeping up with the frame rate requirements.
A default frame difference threshold, 2%, is embedded in rmware for returning from Smart FPS
to normal encoding when motions occur.
Comparing with Smart Stream II, Smart Stream III has two more congurable options: Smart Q,
and Smart FPS.
NOTE: