Real-time MPEG video encoding method of maintaining synchronization between video and audio

摘要

When a real-time MPEG video encoding is performed, null frames are used to compensate lost frames. Or, when a performance of the real-time MPEG video encoding is insufficient, the encoding is performed in accordance with a predetermined frame-type output sequence, in which the null frames are uniformly distributed in the predetermined frame-type output sequence. The null frames are encoded by transforming a null predictive frame with a pixel value of 0 into a discrete cosine transform coefficient through a discrete cosine transform algorithm. The discrete cosine transform coefficient is then transformed into a quantized discrete cosine transform coefficient by quantization. The quantized discrete cosine transform coefficient is then encoded with a null motion vector of (0,0) by variable length coding.