User`s manual

6. Viewer
Barco – Apollo – DOC-3197-2 – user's manual – Revision 08 – November 2006
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List Box Entry Aspect Ratio
No restriction
TV 4/3 4:3
CinemaScope1 41:27
CinemaScope2 16/9 16:9
CinemaScope3 41:18
CinemaScope4 41:17
Click Reset All to undo the section selection and to return to displaying the entire image.
As for the entire video, the display options native size, best fit preserve aspect ratio, fit to window are avail-
able for the section as well. Select the desired scale mode from the list box.
Depending on the settings and size of the window, the then required scaling factors
could no longer be realized by the used input cards. The video is then depicted with a
black border.
The Video Format can be chosen using the list box with the same name.
Select AutoDetect to apply the settings detected by the hardware. With AutoPosdetect enabled, the visible
portion of the signal is automatically detected and positioned in the FRG Viewer window.
Frame rates can be switched between 25fps/30fps and 50fps/60fps. Default setting is 25fps/30fps.
The scaler settings allow to set transparency, sharpness and pre-scaling factor as well as to select the Pixel
format.
Transparency refers to graphic objects on the video, e.g. the clock. Default value is 0.
Sharpness adjusts the sharpness factor, default value is 0.
Pre-scaling defines how many pixels of a 16-pixel-package in x and y direction are omitted due to downscaling
in the input card, e.g. 8 means: 8 of 16 pixels in x and y direction remain (= ¼ of the entire amount of video
pixels remain).
The default setting for the pixel format for video is YUV 4:2:2. This format gives the impression of 24 bit true
color video image at the bandwidth of 16 bit. For RGB, the default setting is 5:6:5. In case the content is very
critical with respect to color, 8:8:8 can be selected. However, this format requires 1.5 times more bandwidth.