There is no such thing as a "tracking window" in videotape terminology, as the A/V lab clerk says. The term "tracking" is used to describe the adjustment of the relationship between control track pulses and the start of a video track (video tracks are written diagonally by a rotating drum, which Noah and Rachel mess with in the previous scene). It's a phase adjustment, the correct phase chosen by the VCR is basically an angle, and all VCRs, even the most basic home units, can read the tape with a control-track-start-of-video-track phase of -180 to 180 degrees (in other words, the full range). Having a wider read head would actually introduce noise and make the video tracks less readable. The clerk/technician makes it sound like videotapes store film frames, and higher-end machines can read larger images. Furthermore, the overscan area of a VHS tape (or any analog composite signal for that matter) is nowhere near large enough to hold a whole other image.
Scritto da il
05/03/2025 alle ore 07:00
Consiglia
Voto
Nessun dato in archivio
Commenti
Nessun dato in archivio
