Video quality of experience based on video quality estimation
Methods, systems, and computer readable media can be operable to facilitate an analysis and control of video quality of experience (VQoE) of services delivered to one or more client devices. A content version segment may be selected for delivery to a client device based upon an estimation of the video quality experienced by the client device and the bandwidth available for delivering content to the client device. Video quality estimation may be based upon information associated with the encoding of a media stream coupled with one or more parameters of the client device receiving the media stream. Video quality estimation for one or more client devices may be aggregated and displayed to a service operator and/or may be used to inform content selection decisions in an adaptive bit-rate delivery method.
1. A method comprising:
retrieving device parameter information associated with a client device receiving a media stream associated with a piece of media content, wherein the media stream comprises one or more video segments associated with a first version of a plurality of versions of the piece of media content, and wherein the device parameter information comprises an identification of a device type associated with the client device and display capabilities associated with the client device;
retrieving video quality estimation information associated with the media stream being received at the client device, wherein video quality estimation information is generated for each respective version of the plurality of versions of the piece of media content and is based, at least in part on an encoding bit-rate associated with the respective content version and display parameters associated with the client device, and wherein video quality estimation information provides an indication of the video quality of experience for a display of the media content at the client device;
aggregating the device parameter information and video quality estimation information;
based upon the aggregated device parameter information and video quality estimation information, identifying an optimal video quality for the display of video at the client device;
identifying a version from the plurality of versions of the piece of media content, the identified version having video quality estimation information matching the identified optimal video quality;
determining a bitrate associated with the identified version of the piece of content;
determining that a bandwidth available for delivery of the media content to the client device does not support the bitrate associated with the identified version of the piece of content; and
increasing an allocation of bandwidth to the client device to provide enough bandwidth to support the delivery of the identified version of the piece of media content to the client device.
2. The method of claim 1 , further comprising, outputting a message to a device controlling content version selection for the client device, the message serving to notify the device to request one or more media segments associated with the identified version of the piece of media content from a content origin server.
3. The method of claim 1 , further comprising, outputting a message to the client device, the message serving to notify the client device to request one or more media segments associated with the identified version of the piece of media content from a content origin server.
4. The method of claim 1 , wherein video quality estimation information is generated for each switch unit of each media stream, wherein a switch unit comprises a closed group of pictures.
5. The method of claim 1 , wherein video quality estimation is generated for one or more segments associated with one or more versions of the piece of media content by performing video quality estimation on one or more segments of a source stream for the piece of media content.
6. The method of claim 1 , wherein video quality estimation information is generated for each respective version of the plurality of versions of the piece of media content by performing video quality estimation on one or more uncompressed media stream segments.
7. The method of claim 1 , wherein video quality estimation information is generated for each respective version of the plurality of versions of the piece of media content by performing video quality estimation on one or more compressed media stream segments.
8. The method of claim 7 , wherein performing video quality estimation comprises performing peak signal-to-noise ratio (PSNR) normalization on one or more compressed media stream segments.
9. The method of claim 1 , wherein:
the video quality estimation information is embedded in the media stream being output to the client device;
the video quality estimation information is extracted from the media stream by an access device forwarding the media stream to the client device; and
the extracted video quality estimation information is retrieved from the access device.
10. The method of claim 1 , wherein video quality estimation information is retrieved from a content delivery network.