ViewCast Osprey PCI, User Manual

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Appendix C: Troubleshooting
110 ViewCast
There are other brands of copy-protection besides Macrovision. Some of these employ similar
methods (resulting in the above) and others do not. This is a good example of Macrovision effects
but you should find a good way if possible to briefly note that there are other forms of copy
protection and that they may have different effects on the picture.
No Closed Captions on DV
The Osprey 530/540/560 is capable of decoding closed captions on NTSC video inputs. This feature
is supported on SDI and analog video sources - the composite and S-video inputs, and digital SDI,
only. It is not supported on the DV input on 540/560 cards.
Cannot Play Back Recorded Audio
If you have a sound card installed, you should be able to hear audio when you play back recorded
audio.

Verify that the volume control for your playback device is not muted.

Verify that the selected playback device is your sound card, and not the Osprey 540/560
Placeholder device. The Placeholder device exists in order to handle the situation where there is an
Osprey 540/560 present without a sound card. Some Windows applications cannot use a recording
device unless a playback device is also installed. The Placeholder device cannot play back
recorded audio. You can use the same method to select playback device that you use when
selecting the audio source.
DV Audio Is Too Slow/Low-Pitched or
Fast/High-Pitched
When the audio input is on 540/560 cards DV1394, you have to use the AudioConfig applet’s
Preferred Audio Sample Rate control to match your audio sample rate to the actual rate of the
incoming data. The two most common formats are 48 kHz / 16-bit, and 32 kHz / 12-bit. You may
have to listen to a sample of your captured audio to determine whether the sample rate is set
correctly – if the pitch is incorrect, try the other setting.
Audio Recording Control Comes Up With
Wrong Device and Wrong Inputs
The cause of this problem may be that you currently have or have had previously, a Video for
Windows audio capture driver installed in the system. The Osprey AVStream install process normally
removes a previous Video for Windows driver, but if you have multiple Osprey cards installed you do
have the option of running the Video for Windows driver on some cards and the AVStream driver on
others. Unfortunately the Recording Control does not work smoothly in this situation. The Video for
Windows device will always try to act like it is the selected device even if it is not. You have to
manually enter Recording Control’s Options -> Properties dialog to select your device.