Pyro Industries API-1394PCI Manual de usuario descargar pdf (Pagina 307)

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APPENDIX

WHAT’S NEW IN XPRESS PRO HD ■

Real-Time DV-25 Bitstream Output

The newest version of Xpress Pro HD is capable of a DV-25 bitstream output. What is

a DV-25 bitstream output? Well, in the case of Xpress Pro, it is a DV-25 decompression

and recompression of the video output. Why would you need it? If you have a Mojo, it

doesn’t really matter if you use real-time bitstream, but it is possible to use. If you have

no Mojo, it means real-time effects in your timeline will not have to be rendered! (As

long as you have a fully qualified Avid system that meets the basic requirements for

Xpress Pro.)

With a Mojo

If you have a Mojo and want to use a DV-25 bitstream output, you need a separate

FireWire card on a different bus to use Xpress Pro HD with the Mojo. Make sure that

your computer has a separate bus before you add the card. If you do not have a sepa-

rate bus, you’ll have to use the Mojo the same as before.

When you use a Mojo with the new DV-25 bitstream, you have to first select the

new DNA/1394 Toggle button . (DNA stands for Digital Nonlinear Acceleration,

an Avid marketing term.) When the button is in DNA mode (which is the default), a

Mojo works normally as before, but all outputs are turned off and you cannot output a

DV-25 bitstream. However, you still have monitoring capabilities. But you can configure

it for bitstream encoding via FireWire, and the output is turned on.

Without a Mojo

If you do not have a Mojo, the DNA/1394 toggle button will be in 1394 mode and

cannot be toggled. From there, you have to configure for a bitstream output. Once

configured, real-time effects play back without a Mojo.

Configuring the Bitstream

Whether or not you have a Mojo, the configuring for a real-time bitstream output is

the same—except in the case of a Mojo, the DNA/1394 Toggle should be set to 1394.

Without a Mojo, it automatically is set to 1394, as stated previously.

First, right-click the Video Quality button at the bottom of the Timeline (see Fig-

ure A.1); choose Realtime Encoding, right-click again, and choose Format

> DV 25 411

(4:1:1 is just the subsampling rate). You also have the option of DV-50 if the source is

Note: A Mojo cannot show HD resolutions.You can,however,edit with the Mojo.It does not give you an

HD output.

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Pyro Industries API-1394PCI Manual de usuario Pagina 307