Overview :

The Medialon Video Capture MXM provides the capability to display an
analog video in Manager, using any DirectX compatible Video Capture
board. These boards may offer several video inputs such as Tuner, Composite,
and S-Video. They also allow several analog video standards (PAL, SECAM,
NTSC). Video Inputs and Video Standard and other settings can be set
from Manager.
Note on system performance : This MxM supports any DirectX Compatible
Video Capture Board, however video quality and processing power needed
to display the video depend upon the relationship between the Video
Capture Board and the VGA Video Board installed in the computer. Two
commands ( "Select Capture Size" and "Select Color Space/Comp")
are provided in order to optimize the video quality and/or the CPU Usage
for a particular application. Using the correct settings can greatly
increase the overall system performance.
Here are the recommended settings for popular Video Capture boards :
Pinnacle PCTV boards : Capture Size = "352x288", Color Space/Comp
= "YV12"
ATI All-In-Wonder (ATI Rage Theater chip) : Capture Size = "720x576",
Color Space/Comp = "UYVY"
ATI Radeon 7200 (ATI Rage Theater chip) : Capture Size = "720x576",
Color Space/Comp = "UYVY"
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Installation (MXM) :
You
need to install the Video Capture card with the provided
installation CD-ROM, before using the MxM.
The operating system must be Windows 2000, Windows XP or
higher. Windows NT4 is not supported.
DirectX 8.1 or higher must be installed (which is usually
done by the board installation CD).
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Creation (Device) :
Device Creation Window :

Capture Device :
Select the Video Capture device driver related to the board
you are using. .
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Graphical
User Interface:
Display
This MxM provides a graphical view (named "Display")
which can be displayed inside a User Screen Contenair object
with the "Device Control" Manager command. Note: See the
Manager Help menu for details about using this command.
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Commands
(List Of) :
Select
Input :
Description
: Select analog video source for incomming video.
Parameters :
Video Input : [Type : Enum] : Video input.
Available
values :
"Composite ".
"S-VHS".
"Tuner".
"Use Default". Use default driver video
source.
Select
Standard :
Description
: Select analog video source standard.
Parameters :
Video Standard : [Type : Enum] : Video standard.
Available
values :
"PAL ".
"SECAM ".
"NTSC"
"Use Default". Use default driver source
standard.
Select
Capture Size :
Description
: Select Video Capture size.
Parameters :
Size : [Type : Enum] : Size.
Available
values :
"352x288 ".
"640x480 ".
"704x520 ".
"Container Size". Set the capture size to the size
of the container.
"Use Default". Use default driver capture
size
Usage
: Note that this parameter does not change the container
size. It rather instructs the Video Capture Board to sample
and to stream the video at the indicated size. The specified
size may or may not be supported by the Video Capture
Board depending upon the board capabilities.
CAUTION : changing this setting may greatly increase the
CPU usage. Note also that some video drivers may not support
all of the Capture Size/Color Space combinations.
Select Color Space/Comp:
Description
: Select Color Space and/or Compression format of
the video.
Parameters :
Size : [Type : Enum] : Size.
Available
values :
"YV12".
"RGB 555 (16Bit)".
"RGB 24".
"YUY2".
"UYVY".
"YVU9".
"Use Default". Use default driver Color
Space and Compression format.
Usage
: This parameter sets the video format of the capture
stream, that is, the way the Video Capture board samples
Y,U and V and compresses the video stream. The specified
Color Space and Compression format may or may not be supported
by the Video Capture Board depending upon the board capabilities.
CAUTION : changing this setting may greatly increase the
CPU usage. Note also that some video drivers may not support
all of the Capture Size/Color Space combinations.
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Variables (List Of) :
Status:
Type : Enum.
Description : Current status of the device.
Available Values :
"Closed" : Overlay
is closed.
"Open" : Overlay is open.
"Container Error" : The container to display video is not set.
"DirectX Error" : An error occurred during the opening of the video
capture.
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Support
(Difference with previous versions) :
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