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Not sure I understand your comment, but when playing a Macrovision tape thru a switcher, the tape is just a source, and nothing is modified on it during playback. If you wanted to preserve the switcher's modification of the signal, you needed to make a recording of the switcher's output.
The only machine/format that could modify the signal that was actually on the tape would be a digital format, for example D2, which had a pre-read function. By playing with the signal flow from the various heads, you could read-before-write and do things like add titles to an existing tape. Preview copiously, because once you press record, you're committed. Like jumping off a cliff with a parachute; you might land safely, but there's no turning back.
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07-12-2019, 07:14 AM
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