System for fast angle changing in video playback devices

摘要

Embodiments of the present invention provide faster user-selected scene switching during playback of a video production. In one embodiment, several channels of video (e.g., several video streams each depicting a different camera angle) are read from interleaved data on a DVD disc. Each channel's data is maintained in a channel buffer that is input to a video decoder via a selector. When a signal from a user input device indicates that a user has selected a new channel, the selector can immediately provide the selected channel's data from the channel buffer to the video decoder, thus providing an increase in switching speed.

主权项

1. A method for providing scene switching in a video playback device, wherein the video playback device includes one or more buffers coupled to a decoder via a selector, the method comprising:
during playback of a video production on a storage medium being read by the video playback device, obtaining two or more encoded video streams that were stored on the storage medium being read by the video playback device, the two or more video streams including different angles for the video production, wherein the two or more video streams include different angle identifiers that are used to identify which angle is associated with respective streams in the two or more video streams; storing the two or more encoded video streams into the one or more buffers using corresponding angle identifiers, wherein one of the two or more encoded video streams for a first angle is being decoded and output by the video playback device for display; accepting a signal from an input device to select a second angle for a second one of the two or more video streams; using the selector to direct the second of the two or more video streams for the second angle to the decoder; and increasing a data transfer rate between a track buffer and a demultiplexer in response to a new angle request.