Video buffer for seamless splicing of MPEG streams

Details Video buffer for seamless splicing of MPEG streams Video buffer for seamless splicing of MPEG streams

1997-11-25

2000-11-28

Lee, Young

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

H04N 712

Patent

active

061544965

ABSTRACT:
At a seamless splice point, a stream of frames from alternate encoders can be switched to a decoder without causing visually disturbing artifacts, and without causing the decoder's buffer to underflow or overflow. Each encoder's buffer is constrained to lie within an upper and lower bound so as to preclude the underflow or overflow of the decoder buffer, regardless of whether the encoder's stream is switched into or out of the stream to the decoder. By classifying splice points as Entry-only splice points or Exit-only splice points, it is shown that the encoder upper and lower bounds may be relaxed. Furthermore, it is shown that by the appropriate choice of transfer rates for Entry-only and Exit-only points, the permissible size of frames before and after the splice point can be regulated.

REFERENCES:
patent: 5982436 (1999-11-01), Balakrishnan et al.
Information Technology-generic coding of moving pictures an dassociated audio information Systems, ISO/IEC 13818-1, pp. 119, 1996E.

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