SIGNALING RANDOM ACCESS POINTS FOR STREAMING VIDEO DATA

摘要

This disclosure describes techniques relevant to HTTP streaming of media data. According to these techniques, a server device may signal an open decoding refresh (ODR) random access point (RAP) for a movie segmentation of a movie representation. At least one frame of the media segmentation following the ODR RAP frame in decoding order may not be correctly decoded, and wherein each frame of the media segmentation following the ODR RAP frame in display order can be correctly decoded without relying on content of frames prior to the ODR RAP in display order. According to the techniques of this disclosure, a client device may communicate a request to a server device for the streaming of media data based on signaling of the ODR RAP. Also according to the techniques of this disclosure, a client device may commence decoding and/or playback of the movie representation based on signaling of the ODR RAP.

主权项

1. A method comprising:
receiving, at a client device from a server device, an indication of an open decoding refresh (ODR) random access point (RAP) frame of a media segment comprising a media file conforming substantially to International Organization for Standardization (ISO) Base Media File Format or an extension of the ISO Base Media File Format, wherein the ODR RAP frame comprises a RAP frame for which at least one frame of the media segment following the RAP frame in decoding order cannot be correctly decoded without receiving one or more frames of a preceding media segment, and for which each frame of the media segment having a display order value greater than the display order value of the RAP frame can be correctly decoded without relying on content of frames prior to the RAP frame in display order; and sending, by the client device, a request to the server device to retrieve a stream of media data starting with at least a portion of the media segment that contains the indicated ODR RAP frame.