Non-linear rewind of video programs

摘要

A rewind or fast forward operation may be performed in which a series of reduced-in-size images from previous frames in a video program may be presented to the viewer. In one implementation, a device may obtain sampled images corresponding to select frames of the video program and output a series of the sampled images in an order in which a sampling time corresponding to each of the sampled images in the video program monotonically increases or decreases in the output series. Differences in the sample times between successive images in the series of sampled images may not be uniform. The device may receive a selection of one of the images in the output series of sampled images and change a current output location of the video program to a location corresponding to the sampling time of the selected image.

主权项

1. A computing device-implemented method, comprising:
outputting, by the computing device, a video program; obtaining, by the computing device, sampled images corresponding to select frames of the video program; outputting, by the computing device, a series of the sampled images in an order in which a sampling time corresponding to each of the sampled images in the video program monotonically increases or decreases in the output series, where differences in the sample times between successive images in the series of sampled images are non-uniform; receiving, by the computing device, a selection of one of the images in the output series of sampled images; changing, by the computing device, a current output location of the video program to a location corresponding to the sampling time of the selected image; writing pointers to the sampled images to a plurality of circular buffers; and discarding alternating outputs of the plurality of circular buffers.