Page 89 - DCAP303_MULTIMEDIA_SYSTEMS

Unit 5: Video

India notes
Standard: DVB-T
Frequencies: (currently being tested)

Compression: (currently being tested)
Channel bandwidth: (currently being tested)
Carrier type: (currently being tested)
Modulation: (currently being tested)

atsC
Canada/North America
Standard: ATSC
Compression: MPEG-2

Channel bandwidth: 6 MHz
Modulation: 8 VSB, 256 QAM
Mexico
Standard: ATSC

Compression: MPEG-2
Channel bandwidth: 6 MHz
Modulation: 8 VSB, 256 QAM
isDB

Japan
Standard: ISDB-S, ISDB-T
Frequencies: OFDM
Compression: MPEG-2 (video) AAC (Audio)

Channel bandwidth: 6 MHz
Modulation: 64 QAM-OFDM, 16 QAM-OFDM, QPSK-OFDM, DQPSK-OFDM
Brazil
Standard: SBTVD-T (Brazilian version of ISDB)

Frequencies: OFDM
Compression: MPEG-4 AVC H.264 (video) HEAAC (Audio)
Channel bandwidth: 6 MHz
Modulation: 64 QAM-OFDM, 16 QAM-OFDM, QPSK-OFDM, DQPSK-OFDM

5.6 video recording and shooting videos

Video recording is the process of converting an analogue video signal—such as that produced
by a video camera or DVD player to digital video.

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