Time code: Frame Rates

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Frame rates are as follows:

30	Sometimes referred to as black & white, used in music or sound applications where no video reference is required.
29.97  nondrop	Sometimes referred to as colour code, used in non-broadcast applications. Standard in countries with 60 Hz alternating current.
29.97  drop frame	Used in broadcast situations. Standard in countries with 60 Hz alternating current.
25	Standard in countries with 50 Hz alternating current for all applications.
24	Little used - ostensibly for film use.