Method for detecting scene changes in compressed video data
OwnerKenny Hsiao, Min-Shu Cheninventors
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Abstract
A method for detecting scene changes in compressed video data. First, the timecodes recorded in the user data area of two adjacent video frames in the compressed video data are read. Then, it is determined whether the time interval between the timecodes is longer than a standard period. If the time interval between the timecodes is longer than the standard period, a scene change of the compressed video data is detected.
Claims13
A method for detecting a scene change in compressed video data, comprising the steps of:
- reading a first timecode and a second timecode respectively corresponding to two adjacent video frames in the compressed video data;
- determining whether the time interval between the first timecode and the second timecode is longer than a standard period;
- and
- determining whether a scene change takes place between the two adjacent video frames.
A method for compressing uncompressed data into compressed data, comprising the steps of:
- transforming a video frame of the uncompressed data into a compressed video frame;
- recording the compressed video frame into the compressed data according to a compression format;
- and
- recording the timecode corresponding to the video frame into the user data area of the corresponding compressed video frame in the compressed data according to the compression format.
The method as claimed in claim5 wherein the scene table records at least one scene and the compressed video frames corresponding to the scene in the compressed video data.
The method as claimed in claim4 wherein the compression format is MPEG.
A method for detecting a scene change in compressed video data, comprising the steps of:
- reading a scene table recorded in the compressed video data;
- determining whether a scene is recorded in the scene table;
- and
- detecting a scene change based on the frames of the scene and its succeeding scene.
Dependencies are inferred from the claim text.