Constrained fidelity Adaptive Bit Rate encoding systems and methods
First Claim
1. A method for joint management of video quality and bandwidth in adaptive bitrate streaming, the method comprising:
- encoding a video to produce one or more bit streams;
creating a plurality of fragments of a bit stream of the encoded video;
generating a video-quality metric for each fragment of the plurality fragments based on a plurality of attributes associated with each fragment, the video-quality metric indicating a video quality of the fragment;
calculating a weighted apportionment of total available bandwidth allocated to a plurality of clients to which the video is distributed over a period of time;
dynamically determining a video-quality threshold associated with each fragment based on the calculated weighted apportionment, wherein the weight associated with the dynamically determined video-quality threshold of the fragment is determined based on an analysis of the video-quality metric and subscriber priority associated with the fragment with respect to video-quality metrics and subscriber priorities associated with other segments of the plurality of fragments;
receiving, from a client device, a request for a fragment of a bit stream of the encoded video, the request indicating a video quality required by the client device for the requested fragment; and
responsive to the video quality of the requested fragment exceeding the video-quality threshold for the requested fragment, selecting another fragment having a lower video quality than the video quality of the requested fragment.
5 Assignments
0 Petitions
Accused Products
Abstract
This disclosure describes and adaptive bit rate encoding and distribution techniques for conserving bandwidth usage in a channel. The invention comprises, an encoder or transcoder, a video fragmenter, a video-quality analyzer that output complexity values, a streaming server, a process by which individual fragments are selected for distribution, a video-quality threshold, and, optionally a bandwidth reclamation factor. A video-quality analyzer inspects any combination of the input and output of the encoder, transcoder, or fragmenter, and produces a video-quality metric for each fragment. A fragment-selection process responds to request from a client device. If the video-quality value of the fragment requested exceeds the video-quality threshold, a different fragment having a lower vide-quality value is selected instead. Otherwise, the fragment that would have been selected is selected. In some embodiments, the video-quality threshold can be dynamically adjusted to permit varying amounts of bandwidth reclamation.
-
Citations
13 Claims
-
1. A method for joint management of video quality and bandwidth in adaptive bitrate streaming, the method comprising:
-
encoding a video to produce one or more bit streams; creating a plurality of fragments of a bit stream of the encoded video; generating a video-quality metric for each fragment of the plurality fragments based on a plurality of attributes associated with each fragment, the video-quality metric indicating a video quality of the fragment; calculating a weighted apportionment of total available bandwidth allocated to a plurality of clients to which the video is distributed over a period of time; dynamically determining a video-quality threshold associated with each fragment based on the calculated weighted apportionment, wherein the weight associated with the dynamically determined video-quality threshold of the fragment is determined based on an analysis of the video-quality metric and subscriber priority associated with the fragment with respect to video-quality metrics and subscriber priorities associated with other segments of the plurality of fragments; receiving, from a client device, a request for a fragment of a bit stream of the encoded video, the request indicating a video quality required by the client device for the requested fragment; and responsive to the video quality of the requested fragment exceeding the video-quality threshold for the requested fragment, selecting another fragment having a lower video quality than the video quality of the requested fragment. - View Dependent Claims (2, 3, 4, 5, 6, 13)
-
-
7. A system for joint management of video quality and bandwidth in adaptive bitrate streaming, the system comprising:
-
a computer processor for executing computer program instructions; and a non-transitory computer readable storage medium storing executable computer program instructions for; encoding a video to produce one or more bit streams; creating a plurality of fragments of a bit stream of the encoded video; generating a video-quality metric for each fragment of the plurality fragments bases on a plurality of attributes associated with each fragment, the video-quality metric indicating a video quality of the fragment; calculating a weighted apportionment of total available bandwidth allocated to a plurality of clients to which the video is distributed over a period of time; dynamically determining a video-quality threshold associated with each fragment based on the calculated weighted apportionment, wherein the weight associated with the dynamically determined video-quality threshold of the fragment is determined based on an analysis of the video-quality metric and subscriber priority associated with the fragment with respect to video-quality metrics and subscriber priorities associated with other segments of the plurality of fragments; receiving, from a client device, a request for a fragment of a bit stream of the encoded video, the request indicating a video quality required by the client device for the requested fragment; and responsive to the video quality of the requested fragment exceeding the video-quality threshold for the requested fragment, selecting another fragment having a lower video quality than the video quality of the requested fragment. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification