Magnetic Tape
Most HDV camcorders use "small" DV cassettes also known as MiniDV cassettes. The Sony HVR-S270 shoulder-mount camcorder is capable of recording both onto "small" and "large" cassettes. Because HDV has the same data rate as DV, recording time is the same as DV Standard Play. Unlike DV, HDV does not offer Long Play speed.
A standard MiniDV cassette provides one hour of recording. By using cassettes with longer and thinner tape it is possible to record up to 80 minutes onto one MiniDV cassette, though usage of such tape is not recommended. Large DV cassette loaded with longer tape can deliver up to 4.5 hours of recording time.
Tape manufacturers also offer MiniDV cassettes specifically for HDV recording. Such cassettes have the same Metal Evaporate (ME) formulation as normal DV cassettes, but are claimed to have reduced drop-out rate compared to standard DV cassettes. Usage of such cassettes is not required by HDV specification.
Read more about this topic: HDV, Recording Media
Famous quotes containing the words magnetic and/or tape:
“We are in great haste to construct a magnetic telegraph from Maine to Texas; but Maine and Texas, it may be, have nothing important to communicate.”
—Henry David Thoreau (1817–1862)
“We shall see but little way if we require to understand what we see. How few things can a man measure with the tape of his understanding! How many greater things might he be seeing in the meanwhile!”
—Henry David Thoreau (1817–1862)