Archives

Archives for: ‘D’

  • dB (Decibel)

    A logarithmic ratio that indicates audio signal amplitude and power.

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  • Depth of Field

    A range of distances between a lens and an object that are in focus. Shallow depth of field will mean objects at close distances to one another will be into focus and objects in the foreground and background will appear out of focus. In contrast, wide depth of field means that many objects at different distances will all be in focus. Changing depth of field is created by using different length lenses.

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  • Digibeta

    A high quality tape commonly used in television production and also in high budget productions. S tapes are available with up to 40 minutes running time, and L tapes with up to 124 minutes. The Digital Betacam format records a DCT-compressed component video signal at 10-bit YUV 4:2:2 sampling in NTSC (720×486) or PAL (720×576) resolutions at a bitrate of 90 Mbit/s plus four channels of uncompressed 48 kHz / 20 bit PCM-encoded audio. A fifth analog audio track is available for cueing, and a linear timecode track is also used on the tape. It is a popular digital video cassette format for broadcast use. Its main competitor is the Panasonic DVCPRO50 cassette format.

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  • Digitize

    The process of converting analog video or audio into a digital format that can be used by a computer. (ex. capturing footage from tape formats onto a computer hard-drive or external hard-drive in preparation for editing.)

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  • Dissolve

    A gradual transition from one image to another, used to soften jump cuts.

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  • Down Conversion

    Transforming video from high-definition format to standard definition.

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  • Drop Out

    Brief loss in image or audio resulting from a defect in tape stock such as missing magnetic particle coating or the presence of tape debris. The result is white specks or streaks appearing in the image.

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  • Drop Shadow

    A graphic effect used to position a shadow on the edge of text that will make it look three dimensional. Drop shadow often makes text much easier to read.

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  • DV (Digital Video)

    A high quality digital video cassette format (includes miniDV & DVCam)

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  • DVCPRO

    A tape format based on DVC that has a wider track and faster tape speed in order to record more data and reduce compression.

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