| 摘要 |
The invention relates to a video encoding apparatus ( 100 ) comprising a video analysis processor ( 101 ) and a video encoder ( 103 ). The video analysis processor ( 101 ) comprises a segmentation processor ( 109 ) which divides a picture into a plurality of picture regions. A picture characteristic processor ( 111 ) determines picture characteristic, such as a texture level, for one of the regions, and in response a video encoding selector ( 113 ) selects a video encoding parameter for that region. The video encoding parameter is fed to the video encoder ( 103 ) wherein a video encode processor (I 19) encodes the picture using the video encoding parameter determined by the external analysis by the video analysis processor (101). The encoded picture is fed back to the video analysis processor ( 101 ) and the process is iterated until a desired encoding performance is achieved. The apparatus is particularly suitable for H.264 encoding and allows for improved performance from a selection of encoding parameters based on an external analysis.
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