Instead of an exact number of samples per frame, a consistent pattern of varying samples is spread over several frames. The number of audio samples per frame is varied on a frame-by-frame basis to form a consistent pattern. To avoid ambiguity, the Society of Motion Pictures and Television Engineers (SMPTE) specifies how many audio samples should be mapped to each video frame. However, with NTSC-related video rates, there is no simple relationship between the number of audio samples per second and video frames per second. For example, if the audio sample rate is 48000 Hz and the video rate is 25 fps, every 1920 audio samples is equivalent to one video frame. When the sample rate is an integer multiple of the video frame rate, the timecode count can be accurately mapped to the sample count. Timecode is calculated for digital audio files by mapping a certain number of audio samples to each video frame. Final Cut Pro uses the more accurate calculation (30 * 1000/1001).įor more information, see SMPTE 170M-1999 "Composite Analog Video Signal - NTSC for Studio Applications."Ģ - Mapping audio samples to video frames: Timecode calculated using 29.97 (instead of 30 * 1000/1001) can be inaccurate, especially as the duration of media increases. Calculating timecode for NTSC video is complicated because it's true frame rate is not simply 30, nor is it 29.97. Timecode calculation is fairly straightforward, with the exception of NTSC-related frame rates. In Final Cut Pro, there are three factors that affect the calculated timecode value of an imported Broadcast Wave file: The following section explains how Final Cut Pro accurately calculates time when importing Broadcast Wave files. If you import the same Broadcast Wave file (BWF) into Final Cut Pro and other editing applications, certain timecode numbers may be calculated differently.
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The Cafe Royal Cocktail Book, published in the UK in 1937, contains a recipe for a Picador using the same concentrations of tequila, triple sec, and lime juice as a margarita. A sidecar and gin daisy are other related drinks.) There is an account from 1936 of Iowa newspaper editor James Graham finding such a cocktail in Tijuana, years before any of the other margarita "creation myths". (Daisies are a family of cocktails that include a base spirit, liqueur, and citrus. According to cocktail historian David Wondrich, the margarita is related to the brandy daisy ( margarita is Spanish for "daisy"), remade with tequila instead of brandy. The history of the margarita is shrouded in mystery and folklore due to its numerous origin stories. The margarita is one of the world's most popular cocktails and the most popular Tequila based cocktail. Most bars serve margaritas in a stepped-diameter variant of a cocktail glass or champagne coupe called a margarita glass. Margaritas can either be served shaken with ice (on the rocks), without ice (straight up), or blended with ice (frozen margarita). Some margarita recipes include simple syrup as well and are often served with salt on the rim of the glass. Margarita recipe at International Bartenders AssociationĪ margarita is a cocktail consisting of tequila, triple sec, and lime juice. Shake and strain into a chilled cocktail glass. Add all ingredients into a shaker with ice. |