A.1 Video I/O Equipment

26.1103GPPCodec for circuit switched multimedia telephony serviceGeneral descriptionRelease 17TS

For a video telephone this would most likely consist of a video camera and display monitor. Other possible input sources could be a VCR or disk drive. While most applicable I/O equipment relies on a standard format for the video signal or bit stream, this format is likely to differ from that mandated by the video codec. In such cases, circuitry or software is used to transcode between the two formats.