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correct color bars for analog output
Greetings,
I have a basic question. I put the FCP SMPTE bars from the bars and tone pulldown menu in the viewer into my sequence before mastering (Edit to Tape) on a betacam (BVW-70) deck. Upon playback I noticed that the bars did not play back at the same levels as they looked in the timeline. I realize that the bars in FCP are digital (blacks=0) and that in the analog world blacks=7.5 IRE. The chroma and video levels were different as well. What bars can I put into my sequence that will assure accurate setup and playback off the beta master?
system notes: FCP Studio on a G5 quad with DVCAM and betaSP decks.
Thanks very much!
Randy
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2 Replies
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What converter are you using to convert to analog? Are your levels brighter or darker? Do you have a hardware waveform/vectorscope to view output levels?
The bars in fcp should be converted correctly as they go through our media converter.
pxlmvr
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Also, what shape is your Betacam deck in. A BVW-70 is a fairly old deck. Most of our BVW series decks around here don’t look as good these days as they did when new. It will depend on many factors- head condition, capacitors, edge connectors within the deck, signal path and so on. If your converter from FCP is good, then what the deck records should be accurate as well-provided the deck is working up to specs. Are you going into the deck component analog or composite? Each way has potential areas to create problems. In composite, the decoder must be in top notch condition for good recording. In component, each of the three connectors and signal paths must be accurate for good reproduction. Do you have more than one deck to check your video on. If so, try another deck and see if it has the same problem. If so, I’m guessing that your output card is at fault or the signal path is bad somewhere.
I feed my BetaSP deck with an Aja Io via the component connectors and the color bars are very accurate.
My 2
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