JP2015519813A5

JP2015519813A5 -

Info

Publication number: JP2015519813A5
Application number: JP2015509146A
Authority: JP
Filing date: 2013-04-25
Publication date: 2016-10-27
Anticipated expiration: 2033-04-25

Claims

A method for structuring content data to be provided using a media server, comprising:
Obtaining the content to be provided;
Generating a plurality of media segments that are encoded according to an encoding protocol that represents the content and includes one or more frames of a media presentation encoded into each media segment, the random access point being Generating steps available in each media segment;
Generating a plurality of media fragments encoded according to the encoding protocol, wherein the media segment includes the plurality of media fragments, at least some of the plurality of media fragments include random access points, and at least Some do not include a random access point, and the random access point includes a position in the segment where a decoder can decode a fragment that follows the random access point independently of the previous fragment of the random access point; and
Generating a segment index for the media fragment,
Including
The segment index, and presentation time range for each media fragment within the media segment, and the corresponding byte range in the media segments each media fragment occupies, whether a random access point is present in each media fragment Including a random access point presence indicator,
Method.

The method of claim 1, wherein the media segment is generated by concatenating the plurality of media fragments.

Generating the media segment in a cache, wherein after the media segment is generated in the cache, the plurality of media fragments used to generate the media segment are from the cache; The method of claim 2, wherein the method is purged.

A single media presentation description (MPD) file that stores information about a first representation of the media presentation that includes the plurality of media segments and a second representation of the media presentation that includes the plurality of media fragments The method of claim 1, further comprising:

5. The method of claim 4, wherein the MPD file includes an attribute for indicating a frequency of occurrence of random access points within the second representation.

6. The method of claim 5, wherein the frequency is a period.

6. The method of claim 5, wherein the frequency is the number of media fragments.

The method further comprises: determining a position of the plurality of media fragments relative to the random access point, wherein the random access point is disposed at a variable non-fixed position of the plurality of media fragments. The method described in 1.

A media server,
Get the content to be provided,
Generating a plurality of media segments representing the content and encoded according to an encoding protocol that includes one or more frames of the media presentation encoded into each media segment;
Generating a plurality of media fragments encoded according to the encoding protocol;
Generating a segment index for the media fragment;
Configured processor
With
A random access point is available in each media segment,
The media segment includes the plurality of media fragments, at least some of the plurality of media fragments include random access points, at least some do not include random access points, and a random access point precedes the random access point. A position in the segment where a decoder can decode a fragment following the random access point independently of the fragment of
Whether the segment index is a presentation time range for each media fragment in the media segment, a corresponding byte range in the media segment that each media fragment occupies, and whether a random access point is present in each media fragment; Including a random access point presence indicator,
Media server.

The media server of claim 9, wherein the media segment is generated by concatenating the plurality of media fragments.

The processor is further configured to generate the media segment in a cache, and the plurality of media used to generate the media segment after the media segment is generated in the cache The media server of claim 10, wherein fragments are purged from the cache.

A single media presentation description that stores information about a first representation of the media presentation that includes the plurality of media segments and a second representation of the media presentation that includes the plurality of media fragments; The media server of claim 9, further configured to generate an (MPD) file.

13. The media server according to claim 12, wherein the MPD file includes an attribute for indicating a frequency of occurrence of random access points in the second representation.

14. The media server according to claim 13, wherein the frequency is a period.

15. A media server according to claim 14, wherein the frequency is the number of media fragments.

The processor is further configured to determine a position of the plurality of media fragments with respect to the random access point, the random access point further comprising a step of being located at a variable non-fixed position of the plurality of media fragments. The media server according to claim 9 .

When executed, one or more computing devices
Get the content to be provided,
Generating a plurality of media segments representing the content and encoded according to an encoding protocol that includes one or more frames of the media presentation encoded into each media segment;
Generating a plurality of media fragments encoded according to the encoding protocol;
Generating a segment index for the media fragment;
One or more non-transitory computer-readable storage media storing computer-executable instructions comprising:
A random access point is available in each media segment,
The media segment includes the plurality of media fragments, at least some of the plurality of media fragments include random access points, at least some do not include random access points, and a random access point precedes the random access point. A position in the segment where a decoder can decode a fragment following the random access point independently of the fragment of
Whether the segment index is a presentation time range for each media fragment in the media segment, a corresponding byte range in the media segment that each media fragment occupies, and whether a random access point is present in each media fragment; Including a random access point presence indicator,
Non-transitory computer readable storage medium.

When executed, the computer-executable instructions cause the one or more computing devices to determine a position of the plurality of media fragments relative to the random access point, the random access point being the plurality of media fragments. 18. The non-transitory computer readable storage medium of claim 17, further comprising the step of: being located at a variable non-fixed location.