Pyro Industries API-1394PCI Manual de usuario descargar pdf (Pagina 74)

■ THE CAPTURE TOOL: CAPTURE CONTROLS

DV-50 This compression uses DVC Pro (DV-50) codecs. DV-50 provides twice the

information of the standard DV codec and is used on DVCPRO-50 machines.

15:1s Compression Although the ratio for this compression sounds bad, it isn’t. 15:1s

compression is a great offline resolution and usually is clear enough to detect fine focus.

Thus, it can be used for any offline cutting. It is especially great because it uses far less

drive space than DV-25 or 1:1 does. For those used to higher-end Avids, 15:1s gives

almost twice the space as 20:1. 15:1s shines when it comes to cutting documentaries,

especially DV-based documentaries in which the shooting ratios can be extremely high.

The only problem is that the DV Scene extraction feature doesn’t work at this compres-

sion, which is really handy for a documentary. Although one might figure that the com-

pression ratio runs at about one-third the storage of DV-25, 15: 1s doesn’t use the

same compression scheme. The “s” in 15:1s stands for “single field,” meaning that

only the first field of the video frame is captured. As a result, the storage is closer to

one-eighth that of DV-25. So for a 100 GB disk, which can store as much as 9.5 hours

of DV-25 footage, one could get as much as 75 hours or more at 15:1s.

You can choose your Capture resolutions directly in the Capture tool or select

them under Settings

> Media Creation Dialog Box.

Selecting Target Drives

The Capture tool will display the available drives on your system that can be used for

storing media. To see what media drives are available or to switch between them, click

the drive name in the Bin section of the Capture tool (see Figure 2.28). (If you have

only one drive for capturing, you need not use this selector.) The drive with the most

storage space available is in bold type.

Figure 2.28 Selecting a drive

To the right of the Drive Selection tool is a time register, which gives an estimate

of how much time is left for digitizing at the chosen resolution using the chosen tracks

on a specific drive. Alt-clicking/Opt-clicking the Single/Dual Drive icon at the left (it

looks like this in FDV and like this in Xpress Pro ) will allow you to see the

total time left for a chosen drive at the selected resolution.

Please note that the time-remaining estimate is always slightly conservative. As

you capture materials, it’s important to remember that there will always be a need for

space on the drives for your media database information. Media database information

is contained in two files on each drive that catalog all the media in the folder. Be sure

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Pyro Industries API-1394PCI Manual de usuario Pagina 74