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16 Cards in this Set
- Front
- Back
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NTSC
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525 lines 60/interlaced hz = 30fps (29.97)
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PAL
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625 lines 50/interlaced hz= 25fps(23.98)
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Progressive scan
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displays both interlaced fields simultaneously
made possible by digital broadcast |
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3:2 PULLDOWN
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Used to convert 24fps to 30 fps
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Waveform Monitor
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Used to measure luminance in a video signal
0 IRE -No signal black 7.5 IRE - Black 100 IRE - Peak Brightness |
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Vectorscope
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Used to measure Chrominance in a video signal
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Temporal Redundancy
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Samples reference frames at defined intervals/
A compressor can see footage in a non linear manner making compression possible. In camera versions of this compression use a buffer. |
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Acquisiton Formats
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The compression format that cameras use
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Transport Format
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This format is compressed less to converse quality for post production
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Terminal Format
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The render for the final product.
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MPEG 1
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USED FOR Video CDS
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MPEG 2
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USED FOR DVDS
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MPEG 4
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Blu Ray - High Def, H.64 is a version of MPEG 4
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INTRAframe Compression
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A compression where every frame is sampled and stored separately as is.
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INTERframe Compression
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A compression where each successive frame is compared with the previous one and only what is different is recorded.
ex: a white background would remain the same |
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Chroma Subsampling
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The compression of color data.The bpp in recording digital vidoe is often reduced by with chroma subsampling.
4:1:1, 4:2:2, 4:4:4 (RGB) The first number always refers to the luminance. The second two are chrominance data. |
