TRANSCODER, METHOD OF TRANSCODING, AND DIGITAL RECORDER

摘要

A transcoder reducing the amount of processing when an encoded stream to which at least intra prediction is applied is transcoded to an encoded stream to which intra prediction and inter prediction are applied.  The transcoder (100) converts a first encoded stream to at least part of which intra prediction is applied to a second encoded stream to which intra prediction and inter prediction are applied.  The transcoder (100) is provided with a decoding unit (200) which decodes an encoded stream so as to create decoded image data; a prediction mode acquisition unit (101) which acquires the prediction mode for the intra prediction applied when decoding; an encoding unit (300) which applies intra prediction or inter prediction so as to encode the decoded image to create the second encoded stream; and a control unit (103) which controls the encoding unit (300) so that it uses the prediction mode acquired by the prediction mode acquisition unit (101) in cases where the encoding unit (300) is using intra prediction.