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Pictures that are coded with respect to the nearest previous I or P-picture. This technique is termed forward prediction. P-pictures provide more compression than I-pictures and serve as a reference for future P-pictures or B-pictures. P-pictures can propagate coding errors when P-pictures (or B-pictures) are predicted from prior P-pictures where the prediction is flawed.
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A PID that identifies the Transport Stream packets that carry TS_program_map_section()s in a TS-E.
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A table with the same syntax as Program Map Table as defined by ISO/IEC IS 13818-1:2000 (E) transmitted using an enhanced VSB mode defined in Annex D of A/53.
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Also known as the “traffic schedule”. A sequential list of automation events to be played back for a station output channel.
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“Picture element” or “pel.” A pixel is a digital sample of the color intensity values of a picture at a single point.
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Source, coded, or reconstructed image data. A source or reconstructed picture consists of three rectangular matrices representing the luminance and two chrominance signals.
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A generic term to refer to the each of the 6–8 MHz frequency bands where television signals are embedded for transmission. Also known as the physical transmission channel (PTC). One analog virtual channel fits in one PTC but multiple digital virtual channels typically coexist in one PTC.
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A continuous sequence of PES packets of one elementary stream with one stream_id.
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A PES stream consists of PES packets, all of whose payloads consist of data from a single elementary stream, and all of which have the same stream_id.
Posted on April 1, 2015 in
The leading fields in a PES packet up to but not including the PES_packet_data_byte fields where the stream is not a padding stream. In the case of a padding stream, the PES packet header is defined as the leading fields in a PES packet up to but not including the padding_byte fields.
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