Using OmniStream
™
with Velocity
™
Device Manager
47
Device Operation
Anchor Points
Anchor points will be placed on the canvas at the x and y coordinates of that canvas. If the decoder output is not
scaled, then this will correspond to the actual coordinates on the display. If the decoder output is scaled, then the
Anchor point will be rendered on the canvas at the specified coordinates, and then the entire output image will be
scaled.
Because of the way the VCx codec works, anchor points must be placed on coordinates where the x value is
divisible by 32 and the y value is divisible by 8. If a coordinate is entered that does not meet this requirement, then
the decoder will automatically snap the coordinates and notify the user of the change.
Top Left
Bottom Left
Bottom Right
Center
Top Right
In this case, when the stream changes to 1280 x 720, the subframe will grow in size and be cropped by the display,
because the top left anchor point has not change position
If the incoming stream changes resolution to 1280x720, then the subframe will grow in size, but it will still fit on-
screen, because its bottom right Anchor point has not changed position.
Subframe 1
3840 x 2160
Subframe 2
640 x 360
Anchor Point
Subframe 1
3840 x 2160
Subframe 2
Expands to
1280 x 720
Subframe 1
3840 x 2160
Anchor Point
Subframe 2
640 x 360
Subframe 1
3840 x 2160
Subframe 2
Expands to 1280 x 720
(cropped)
Anchor Point
Subframe 1
3840 x 2160
Subframe 2
640 x 360
Anchor Point
Subframe 1
3840 x 2160
Subframe 2
Expands to
1280 x 720
Subframe 1
3840 x 2160
Anchor Point
Subframe 2
640 x 360
Subframe 1
3840 x 2160
Subframe 2
Expands to 1280 x 720
(cropped)
Anchor Point