Friday, October 23, 2009

Re: [Avid-L2] Re: BETA SP BVW-70 Head Switching in active video? Now Auto vs Ext Ref Switch

On Oct 23, 2009, at 3:18 PM, johnrobmoore wrote:

> Clearly when set to external something related to the head switching
pulses is derived from the ext sync input not the incoming video.

I agree:

Yes, the scanner's tach phase (its position in relation to the signal)
is controlled by the reference. If the External Reference is selected,
the scanner's position may not match the video being recorded. The
"Auto" setting allows the scanner to align to the incoming video during
record and align with the external reference during playback. It
should pretty much always be set to "Auto", unless you have no external
reference available.

Dennis Degan, Video Editor-Consultant-Knowledge Bank
NBC Today Show, New York

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