Dynamic resolution change hints for adaptive streaming

A device for retrieving media data, the device comprising:

• a memory configured to store video data;
• a video decoder configured to decode the video data;
• and
• one or more processors implemented in circuitry and configured to:
• determine that a media presentation includes first video data at a first spatial resolution and second video data at a second spatial resolution, the second spatial resolution being different than the first spatial resolution;
• receive data associated with the media presentation, the data including:
• a first quality value indicating a first quality of a first portion of the first video data at the first spatial resolution for a first playback time, and
• a second quality value indicating a second quality of a first portion of the second video data at the second spatial resolution for the first playback time;
• determine, based on the first quality value received in the data and the second quality value received in the data, that the first quality of the first portion of the first video data associated with the first playback time is higher than the second quality of the first portion of the second video data associated with the first playback time, wherein the first portion of the first video data and the first portion of the second video data are alternative encoded versions to each other of content included within the media presentation;
• in response to a determination that the first quality of the first portion of the first video data is higher than the second quality of the first portion of the second video data, request the first portion of the first video data for the first playback time;
• receive the first portion of the first video data at the first spatial resolution for the first playback time;
• send the first portion of the first video data at the first spatial resolution to the video decoder;
• receive a second portion of the second video data at the second spatial resolution for a second playback time later than the first playback time;
• and
• send the second portion of the second video data at the second spatial resolution to the video decoder.

A non-transitory, computer-readable storage medium having stored thereon instructions that, when executed, cause a processor to:

• determine that a media presentation includes first video data at a first spatial resolution and second video data at a second spatial resolution, the second spatial resolution being different than the first spatial resolution;
• receive data associated with the media presentation, the data including:
• a first quality value indicating a first quality of a first portion of the first video data at the first spatial resolution for a first playback time, and
• a second quality value indicating a second quality of a first portion of the second video data at the second spatial resolution for the first playback time;
• determine, based on the first quality value received in the data and the second quality value received in the data, that the first quality of the first portion of the first video data associated with the first playback time is higher than the second quality of the first portion of the second video data associated with the first playback time, wherein the first portion of the first video data and the first portion of the second video data are alternative encoded versions to each other of content included within the media presentation;
• in response to a determination that the first quality of the first portion of the first video data is higher than the second quality of the first portion of the second video data, request the first portion of the first video data for the first playback time;
• receive the first portion of the first video data at the first spatial resolution for the first playback time;
• send the first portion of the first video data at the first spatial resolution to a video decoder;
• receive a second portion of the second video data at the second spatial resolution for a second playback time later than the first playback time;
• and
• send the second portion of the second video data at the second spatial resolution to the video decoder.

A device for retrieving media data, the device comprising:

• means for determining that a media presentation includes first video data at a first spatial resolution and second video data at a second spatial resolution, the second spatial resolution being different than the first spatial resolution;
• means for receiving data associated with the media presentation, the data including:
• a first quality value indicating a first quality of a first portion of the first video data at the first spatial resolution for a first playback time, and
• a second quality value indicating a second quality of a first portion of the second video data at the second spatial resolution for the first playback time;
• means for determining, based on the first quality value received in the data and the second quality value received in the data, that the first quality of the first portion of the first video data associated with the first playback time is higher than the second quality of the first portion of the second video data associated with the first playback time, wherein the first portion of the first video data and the first portion of the second video data are alternative encoded versions to each other of content included within the media presentation;
• in response to determining that the first quality of the first portion of the first video data is higher than the second quality of the first portion of the second video data, means for requesting the first portion of the first video data for the first playback time;
• means for receiving the first portion of the first video data at the first spatial resolution for the first playback time;
• means for sending the first portion of the first video data at the first spatial resolution to a video decoder;
• means for receiving a second portion of the second video data at the second spatial resolution for a second playback time later than the first playback time;
• and
• means for sending the second portion of the second video data at the second spatial resolution to the video decoder.