Adaptive data streaming method with push messages control

Patent metadata

Field	Value
Publication number	US-10728353-B2
Application number	US-201816107093-A
Country	US
Kind code	B2
Filing date	Aug 21, 2018
Priority date	Jul 12, 2013
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

There is provided methods for managing streaming over communication networks. Server and client devices share a push policy so that the client device may anticipate data pushes by the server. Anticipation makes it possible to cancel early the sending of some pushed data, therefore reducing bandwidth consumption. The shared push policy may be implicit to both server and client. In embodiments, it is explicitly specified by the server to the client, for example embedded in the Media Presentation Description file or included in a specific HTTP header. The client may also request an update of the shared push policy to meet its own requirements.

First claim

The invention claimed is:

1. A method of providing media data from a server to a client, the method comprising:
receiving, from the client, an MPD request (Media Presentation Description request) for requesting an MPD and including parameters signaling the client's preference for initialization information and media, wherein the server requires one MPD request from the client in order to provide media data to the client and the MPD is defined in MPEG-DASH standard,
analysing the client's preference to determine whether to push initialization data and one or more segments,
determining, according to the parameters in the MPD request from the client, the one or more segments to be pushed to the client, and
pushing the determined one or more segments to the client in response to the MPD request from the client, wherein the pushing allows the server to send unsolicited resource representations to the client.

2. The method of claim 1 , wherein, in the determining step, an initialization segment, containing metadata that is necessary to present media streams encapsulated in media segments, is determined to be pushed to the client.

3. The method of claim 1 , wherein, in the determining step, some media segments are determined to be pushed to the client.

4. The method of claim 1 , wherein, in the determining step, an initialization segment and some media segments are determined to be pushed to the client.

5. The method of claim 1 , further comprising sending, to the client, a notification indicating that the server intends to push the determined one or more segments according to the parameters.

6. The method of claim 1 , wherein the parameters include a parameter relating to height of a video.

7. The method of claim 1 , wherein the parameters include a parameter relating to bandwidth.

8. The method of claim 1 , wherein the parameters signal at least one of: transmission rate for a video segment and language information for audio segment.

9. The method of claim 1 , further comprising transmitting the MPD to the client in response to the MPD request.

10. A method of receiving media data by a client from a server, the method comprising:
transmitting, to the server, an MPD request (Media Presentation Description request) for requesting an MPD and including parameters signaling the client's preference for initialization information and media, wherein the server requires one MPD request from the client in order to provide media data to the client and the MPD is defined in MPEG-DASH standard,
analysing the client's preference to determine whether to push initialization data and one or more segments based on a predetermined threshold, and
receiving the one or more segments pushed from the server in response to the MPD request, wherein the one or more pushed segments are determined by the server according to the parameters included in the MPD request, wherein the pushing allows the server to send unsolicited resource representations to the client.

11. The method of claim 10 , wherein, in the receiving step, an initialization segment, containing metadata that is necessary to present media streams encapsulated in media segments, and pushed from the server is received.

12. The method of claim 10 , wherein, in the receiving step, some media segments pushed from the server are received.

13. A device for providing media data to a client, the device comprising:
a hardware processor; and
a memory storing one or more programs configured to be executed by the hardware processor, the one or more programs including instructions for:
receiving, from the client, an MPD request (Media Presentation Description request) for requesting an MPD and including parameters signaling the client's preference for initialization information and media, wherein a server requires one MPD request from the client in order to provide media data to the client and the MPD is defined in MPEG-DASH standard,
analysing the client's preference to determine whether to push initialization data and one or more segments, determining, according to the parameters in the MPD request from the client, the one or more segments to be pushed to the client, and
pushing the determined one or more segments to the client in response to the MPD request from the client, wherein the pushing allows the server to send unsolicited resource representations to the client.

14. The device of claim 13 , wherein, in the determining step, an initialization segment, containing metadata that is necessary to present media streams encapsulated in media segments, is determined to be pushed to the client.

15. The device of claim 13 , wherein, in the determining step, some media segments are determined to be pushed to the client.

16. A device for receiving media data from a server, the device comprising:
a hardware processor; and
a memory storing one or more programs configured to be executed by the hardware processor, the one or more programs including instructions for:
transmitting, to the server, an MPD request (Media Presentation Description request) for requesting an MPD and including parameters signaling the client's preference for initialization information and media, wherein the server requires one MPD request from the client in order to provide media data to the client and the MPD is defined in MPEG-DASH standard,
analysing the client's preference to determine whether to push initialization data and one or more segments, and
receiving the one or more segments pushed from the server in response to the MPD request, wherein the one or more pushed segments are determined by the server according to the parameters included in the MPD request, wherein the pushing allows the server to send unsolicited resource representations to the client.

17. The device of claim 16 , wherein, in the receiving step, an initialization segment, containing metadata that is necessary to present media streams encapsulated in media segments, and pushed from the server is received.

18. The device of claim 16 , wherein, in the receiving step, some media segments pushed from the server are received.

19. A non-transitory computer-readable storage medium storing a program for causing a computer to execute a method of providing media data to a client, the method comprising:
receiving, from the client, an MPD request (Media Presentation Description request) for requesting an MPD and including parameters signaling the client's preference for initialization information and media, wherein a server requires one MPD request from the client in order to provide media data to the client and the MPD is defined in MPEG-DASH standard,
analysing the client's preference to determine whether to push initialization data and one or more segments,
determining, according to the parameters in the MPD request from the client, the one or more segments to be pushed to the client, and
pushing the determined one or more segments to the client in response to the MPD request from the client, wherein the pushing allows the server to send unsolicited resource representations to the client.

20. A non-transitory computer-readable storage medium storing a program for causing a computer to execute a method of receiving media data from a client, the method comprising:
transmitting, to a server, an MPD request (Media Presentation Description request) for requesting an MPD and including parameters signaling the client's preference for initialization information and media, wherein the server requires one MPD request from the client in order to provide media

Assignees

• Canon Kk

Inventors

• Fablet Youenn
• Bellessort Romain
• Maze Frédéric
• Ouedraogo Naël
• Denoual Franck
• Ruellan Hervé

Classifications

• H04N21/47202 Primary

  for requesting content on demand, e.g. video on demand · CPC title

• H04N21/26258 Primary

  for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list (retrieval of multimedia data based on playlists G06F16/40) · CPC title

• H04L65/65

  Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP] · CPC title

• H04L67/02

  based on web technology, e.g. hypertext transfer protocol [HTTP] · CPC title

• H04L65/762

  at the source  (reformatting of additional data in video distribution servers H04N21/2355) · CPC title