Patent ID: 8369398

Claim:
An apparatus for encoding/decoding video, comprising: a pre-processing circuit for receiving an input video signal and a first adjusting signal, the pre-processing circuit performing a skipping and replacing process on the input video signal according to the first adjusting signal for decreasing the throughput of the input video signal, the pre-processing circuit providing a pre-processed video signal; a video encoder, coupled to the pre-processing circuit, for receiving the pre-processed video signal and a second adjusting signal to encode the pre-processed video signal to generate an encoded video signal according to the second adjusting signal, wherein the data amount of the encoded video signal corresponds to the second adjusting signal; a buffer, coupled to the video encoder, for storing the encoded video signal; an interface, coupled to the buffer, for outputting the encoded video signal stored in the buffer; and a control circuit, coupled to the buffer, for generating the first adjusting signal according to a utility status of a storage space of the buffer; wherein the skipping and replacing process comprises skipping one of an even field or odd field of frames of the input video signal and replacing the skipped field with the other field in the same frame.