Blackmagicdesign DeckLink - Processor Amplifier

Blackmagic Design - Leading the creative video revolution
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Mac OS X
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Analog Video Input Processor Amplier
We now include a Proc Amp tab in the Blackmagic DeckLink PrefPane located
in “System Preferences.”
Proc Amp can be used to adjust gain level controls for any cards with analog
input, i.e. the DeckLink SP and DeckLink Extreme. We have added this control
due to variations in video output from analog tape decks.
This is also a reason why SDI is preferable to analog video, as it does not
suffer from the potential gain variance issues which can be seen with analog
components.
Preserving Blanking Data or VANC
To preserve VANC data when capturing, this can be enabled in the Blackmagic
DeckLink PrefPane located in “System Preferences.” Now you can use up to 3
video lines at the top of a captured QuickTime™ movie le to store any 3 lines
from vertical blanking. This allows 3 line timecode, VITC, vertical interval test
signals, subtitle info or any other VANC data to be preserved between capture
and playback. Software applications can also access these lines if required.
This uses standard QuickTime™ les, so applications such as After Effects™
and Final Cut Pro™ will be compatible. This works on all standard or high
denition DeckLink cards. You can select if you want 1, 2 or 3 lines to be used.
Although an extra metadata track to the QuickTime™ le would be desirable, it
would not be compatible with some video applications. We also thought about
making the movie le 3 lines larger in the vertical resolution. So for example,
1080 would become 1083. However these les would be incompatible with
normal les so it is not a good solution. So we thought that most people don’t
miss a line or two from the top of the image and it would be benecial to include
this feature and use a line or 2 or 3 for that blanking data storage.
The great advantage is we don’t need to know about the data structure of the
VANC data, as we just capture the lines. So if there is some special data that
you want to use, that’s no problem, as we just capture the lines intact, put them
in the top lines of the movie le. We then put the lines back into the vertical
blanking when playing back the les.
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