Graphical video editing system for regeneration of bitstreams

Abstract

A graphical video editing system that allows manipulation of images for input to the video encoding and decoding process. The debugging of video encoders and decoders is aided by user controlled editing of problem areas in test images, and the graphical video editing system is coupled directly to the video encoder or decoder being debugged so that the effects of the editing can be immediately observed. This system advantageously provides a speedup in the debugging process by simplifying the detection of problem areas and providing a fast method for narrowing the possible causes of image flaws. Broadly speaking, the present invention contemplates a graphical video editing system for regeneration of bitstreams. The system comprises an encoder module, a decoder module, a display editor module and a display. The encoder module is configured to receive an input image and to convert the input image into an encoded bitstream. The encoder module is coupled to provide the encoded bitstream as an input bitstream to the decoder module, which is configured to convert the input bitstream into a decoded image. The display editor module is coupled to receive the decoded image from the decoder module and show it on the display. The display editor module is further configured to receive an image edit for the decoded image. The system may further comprise a bitstream manager module coupled to the display editor module to receive the decoded image and the image edit. The bitstream manager module is configured to responsively provide an edited image as the input image to the encoder module.

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