FRAME-RATE CONVERSION IN A DISTRIBUTED COMPUTING SYSTEM

摘要

Described herein are, among other things, distributed processing methods and systems for frame rate conversion. In an embodiment, a transcoding management machine manages a distributed transcoding process, creating a plurality of video segments and assigning the video segments across a set of distributed transcoding resources for frame rate conversion. The management machine typically sends a given segment to a given transcoding resource along with instructions to convert the frame rate to a specified output frame rate. In addition, the management machine can send certain transcoding assistance information that preferably facilitates the frame rate change process and helps the transcoding resource to create a more accurate output segment. Hence, in some embodiments, each transcoding resource can perform its transcode job independently, but with reference to the input segment it is responsible for transcoding and the assistance information provided by the management machine.

主权项

1. A system for frame-rate conversion in a distributed computing system, comprising:
a management machine that sends first and second segments and to first and second transcoding resource machines, respectively, wherein each of the first and second segments represent a portion of a video; wherein the management machine further sends an instruction to the first transcoding resource machine to convert a frame rate of the portion of the video represented by the first segment to an output frame rate, and sends an instruction to the second transcoding resource machine to convert a frame rate of the portion of the video represented by the second segment to the output frame rate; wherein the management machine further sends to the first transcoding resource machine:
(i) a first time stamp that represents a reference point in the video;(ii) a second time stamp that is associated with the initial frame of a segment of the video immediately following the first segment; each of the management machine and the first and the second transcoding resource machines comprising at least one microprocessor that is coupled to memory storing code executable by the at least one microprocessor to operate the given machine as described herein.