ViewCast Osprey PCI, User Manual

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Setting Driver Properties
36 ViewCast
The Filters tab has the following controls.
SimulStream Enables SimulStream. SimulStream provides technology so a single
capture card can output the same video in different sizes, color
formats, frame rates, crops, logos, and captioning.
Mode The Mode group selects the two main functional modes of the driver
– PostProcessing Mode and Direct Mode – as well as the
Quality/Throughput tradeoff for PostProcessing Mode.
Direct When Direct mode is selected, processing by the driver is minimized.
The processing steps named above – deinterlace/inverse telecine,
gamma, logo, and caption rendering – are not available.
Deinterlace Deinterlace settings are applied and stored per-device and are
applied to all filters and pins associated with a device.
Currently Using These indicators allow you to see the current algorithm.
SimulStream
SimulStream is a purchased software option. It makes a single hardware device appear as several
separate devices capturing the same input stream. You purchase SimulStream as an upgrade to your
Osprey card or a pre-enabled card. Purchases can be made at
www.viewcast.com .
ViewCast includes an evaluation version of SimulStream with the Osprey card; however, any logos or
changes you attempt to make will not take effect until you purchase the SimulStream option. If you
have a SimulStream license installed but have not turned on SimulStream, the text line at the top of
the control group will say that SimulStream is
installed . If you do have SimulStream turned on, the
text will say that SimulStream is enabled .
You can have as many streams from the device as you want. Each stream can have different size,
color format, frame rate, crop, logo, and captioning. You can have multiple video capture streams in
a single application, or multiple applications each with one or more capture streams. The term “one
filter” refers to the fact that all streams have the same Osprey custom properties. Specifically,
cropping, logos (watermarks), and NTSC Closed Caption rendering settings must work the same for
all streams on the device.
The advantage of this mode is that it is simpler. We recommend this mode if you don’t use Osprey
custom cropping, logos or Closed Captions, or if all streams have the same settings. This setting
affects all devices served by the currently accessed driver. The driver will advise you to restart the
system or your application if this is needed.
You can see the caption SimulStream evaluation is enabled in Figure 25.