Video transcoding system with drastic scene change detection and method for use therewith
AssigneeViXS Systems, Inc.
InventorAvinash Ramachandran
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Abstract
A system for transcoding a video signal into a transcoded video signal includes a drastic scene change detection module that detects a drastic scene change in a sequence of images, wherein the drastic scene change indicates a change in scene complexity. A transcoder section generates the transcoded video signal, wherein, when the drastic scene change is detected, a quality parameter is adjusted in at least one of the sequence of images.
Claims16
A system for transcoding a video signal into a transcoded video signal, the video signal including a sequence of images, the system comprising:
- a hardware processing device configured to provide:
- a drastic scene change detection module that operates as part of the hardware processing device to detect a drastic scene change in the sequence of images by generating a change in scene complexity based on a moving average of scene complexities corresponding to a plurality of images in the sequence of images, comparing a change in scene complexity to a scene complexity threshold, and detecting the drastic scene change when the change in scene complexity is greater than the scene complexity threshold;
- and
- an transcoder section, coupled to the drastic scene change detection module, that operates as part of the hardware processing device to generate the transcoded video signal in a different compressed video format from a compressed video format of the video signal, wherein, when the drastic scene change is detected, a quality parameter of the different compressed video format is adjusted in at least one of the sequence of images in conjunction with encoding the at least one of the sequence of images in the different compressed video format.
A method for transcoding a video signal into a transcoded video signal, the video signal including a sequence of images, the method comprising:
- detecting a drastic scene change in the sequence of images via a video transcoder by generating a change in scene complexity based on a moving average of scene complexities corresponding to a plurality of images in the sequence of images, comparing a change in scene complexity to a scene complexity threshold, and detecting the drastic scene change when the change in scene complexity is greater than the scene complexity threshold;
- and
- generating the transcoded video signal via the video transcoder in a different compressed video format from a compressed video format of the video signal, wherein, when the drastic scene change is detected, a quality parameter of the different compressed video format is adjusted in at least one of the sequence of images in conjunction with encoding the at least one of the sequence of images in the different compressed video format.
Dependencies are inferred from the claim text.