User manual

Troubleshooting : Help
Page 171
Poor HD Image Quality
Problem:
The PQ (Picture Quality) on screen does not come up to expectations when using an HD video projector plugged
into the graphic card output. Images are stepped on diagonals and curves (Jaggies). They also features a random
horizontal slice on rapid movements.
Solution:
Ensure the Composition settings correspond to the HD format used. Double-click on the video clip in the Timeline
to display Clip Info. This includes the native format of the media file (e.g. 1980x1080 pixels at 24 fps). Ideally, the
projector's native resolution (DLP or LCD) should match this format, and the frame rate should be an integer multi-
ple of the composition frame rate e.g. 24 fps (composition) and 72 fps (projector/graphic card settings). To avoid
slice artefacts in slow progressive mode (23.98, 24, 25 fps), Settings > Show Preview Tab : Page Flipping should
be active.
Frame Shifting with Virtual Transport
Problem:
Your VCube is controlled by a Pyramix via the Virtual Transport protocol. The transport controls on the Pyramix are
transmitted to the VCube. But you experiment with some shifting when you're using a jog command on the Pyra-
mix and discover VCube is not frame accurate.
Solution:
In the VCube application, press T to display the Internal Machine panel. LTC , VITC and EXT TimeCode Sources for
chasing should be disabled. Then the Virtual Transport protocol becomes the default source for the TimeCode to
chase.
Enable Chase on the Internal Machine panel. Now VCube will be frame accurate when you are jogging in Pyra-
mix.
Horizontal Slicing and jaggies