Manifest generation and segment packetization

Patent metadata

Field	Value
Publication number	US-9860612-B2
Application number	US-201414250010-A
Country	US
Kind code	B2
Filing date	Apr 10, 2014
Priority date	Apr 10, 2014
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A method includes receiving, at a media server from a computing device, a first request for a manifest associated with media content. The method also includes generating, at the media server, the manifest based on a manifest type and a content segmentation type. The manifest identifies one or more segments of one or more adaptive streaming renditions. The method further includes sending the manifest from the media server to the computing device. The method includes receiving a second request from the computing device, where the second request identifies a requested segment of an adaptive streaming rendition identified by the manifest. The method also includes sending the requested segment from the media server to the computing device in response to the second request.

First claim

What is claimed is:

1. A method comprising:
receiving, at a media server, a source stream from a source distinct from the media server;
receiving, at the media server from a computing device, a first request for a manifest associated with the source stream, wherein the first request includes a manifest type and a computing device identifier;
transcoding, at the media server, the source stream to generate at least one transcoded stream based on the first request, wherein the at least one transcoded stream corresponds to a particular adaptive bitrate (ABR) rendition of the source stream, and wherein the at least one transcoded stream is key frame aligned with respect to the source stream;
generating, at the media server in response to the first request, the manifest based on the manifest type and a content segmentation type, wherein the manifest identifies one or more segments of the at least one transcoded stream;
sending the manifest from the media server to the computing device;
in response to sending the manifest to the computing device, receiving a second request from the computing device, wherein the second request includes the computing device identifier and a first uniform resource locator (URL); and
sending at least one segment of the one or more segments from the media server to the computing device in response to the second request.

2. The method of claim 1 , wherein the content segmentation type is identified by the first request or is a default content segmentation type.

3. The method of claim 1 , wherein the manifest comprises a motion picture experts group (MPEG) dynamic adaptive streaming over HTTP (MPEG-DASH) media presentation description (MPD).

4. The method of claim 1 , wherein the content segmentation type identifies whether audio content and video content are to be sent to the computing device as multiplexed segments or as non-multiplexed segments.

5. The method of claim 1 , wherein the content segmentation type identifies a container format.

6. The method of claim 5 , wherein the container format complies with an international standards organization base media file format (ISOBMFF), a motion picture experts group 2 transport stream (MPEG-TS) format, an extensible binary markup language (EBML) format, a WebM format, a Matroska format, or any combination thereof.

7. The method of claim 1 , wherein the first URL included in the second request includes an adaptive streaming rendition identifier.

8. The method of claim 1 , wherein the first request indicates a time-based manifest type, and wherein the at least one segment comprises a media segment that includes audio content, video content, or a combination of audio content and video content.

9. The method of claim 1 , wherein media content of the source stream corresponds to a live stream, a video on demand (VOD) stream, or a linear live television stream, and wherein the first request includes a target segment duration.

10. The method of claim 9 , further comprising:
receiving a segment of a media stream;
generating one or more segment templates at the media server, wherein each of the one or more segment templates is associated with a corresponding content segmentation type and identifies a start position of the segment in the media stream and an end position of the segment in the media stream;
sending, to the computing device, a graphical user interface that includes options for the target segment duration;
receiving a selection of one of the options; and
generating, in response to the second request, the at least one segment based on a particular segment template of the one or more segment templates.

11. An apparatus comprising:
a processor; and
a memory storing instructions executable by the processor to perform operations comprising:
receiving, at a media server, a source stream from a source distinct from the media server;
receiving, at the media server from a computing device, a first request for a manifest associated with the source stream, the first request including a manifest type and a computing device identifier;
transcoding, at the media server, the source stream to generate at least one transcoded stream based on the first request, wherein the at least one transcoded stream corresponds to a particular adaptive bitrate (ABR) rendition of the source stream, and wherein key frames of the at least one transcoded stream are aligned with key frames of the source stream;
generating, at the media server in response to the first request, the manifest based on the manifest type and a content segmentation type, wherein the manifest identifies one or more segments of the at least one transcoded stream;
sending the manifest from the media server to the computing device;
in response to sending the manifest to the computing device, receiving a second request from the computing device, wherein the second request includes the computing device identifier and a first uniform resource locator (URL), the first URL including the manifest type; and
sending at least one segment from the media server to the computing device in response to the second request.

12. The apparatus of claim 11 , wherein the manifest comprises a motion picture experts group (MPEG) dynamic adaptive streaming over HTTP (MPEG-DASH) media presentation description (MPD), and wherein the at least one segment is sent from the media server to the computing device via a MPEG-DASH protocol.

13. A computer-readable storage device storing instructions that, when executed by a processor, cause the processor to perform operations comprising:
receiving, at a media server, a source stream from a source distinct from the media server;
receiving, from a first computing device, a first request for a manifest associated with the source stream, the first request including a manifest type;
transcoding, at the media server, the source stream to generate at least one transcoded stream, wherein the at least one transcoded stream corresponds to at least one adaptive bitrate (ABR) rendition of the source stream, and wherein the at least one transcoded stream is key frame aligned with respect to the source stream;
generating segment templates for the at least one transcoded stream, wherein a uniform resource locator (URL) template is associated with one of the generated segment templates; and
sending, from the media server to the first computing device, a first manifest that identifies one or more segments of the at least one transcoded stream, wherein the first manifest is generated by the media server responsive to a request from the first computing device and based on a manifest type, the request including the manifest type, a computing device identifier, and a URL template, the URL template having a URL for at least one segment of the one or more segments, and the URL of the URL template corresponding to the manifest media; and
sending the at least one segment from the media server to the first computing device in response to a second request that includes the computing device identifier, wherein the at least one segment comprises an initialization segment that includes data configured to initialize a media player at the first computing device to determine whether the first computing device is capable of decoding particular media content.

14. The computer-readable storage device of claim 13 , wherein the second request comprises a segment request URL, wherein the segment request URL is time-based, and wherein the segment request URL includes a segment start time.

15. The computer-readable storage device of claim 13 , wherein the first manifest comprises a motion picture experts gr

Assignees

• Wowza Media Systems Llc

Inventors

• Good Charles F
• Collins Richard A

Classifications

• H04N21/8586

  by using a URL (processing chained hypermedia data for information retrieval G06F16/94; information retrieval from the Internet by using URLs G06F16/955; URL in broadcast information H04H20/93; Web-based protocols H04L67/02) · CPC title

• H04N21/84 Primary

  Generation or processing of descriptive data, e.g. content descriptors {(systems specially adapted for using meta-information in broadcast systems H04H60/73)} · CPC title

• H04N21/2353 Primary

  specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata · CPC title

• H04N21/2343

  involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements {(video transcoding H04N19/40; media packet handling at the source H04L65/762)} · CPC title

• H04N21/23439

  for generating different versions · CPC title