Dynamic quality adjustment based on changing streaming constraints
A method and apparatus for dynamic quality adjustment of digital media based on changing streaming constraints is provided. A digital media server sends a digital media stream according to a set of streaming constraints to a requesting client. Audio and visual information may be sent to a requesting client together in a single stream, or separately in multiple streams. A client sends a request over a control network to the digital media server indicating information of a particular type is no longer desired. In response to receiving the signal, the video server ceases transmission of that particular type of information to the signaling client, thus relaxing streaming constraints. As a result of the techniques described herein, an improved quality digital presentation is available for the client and, consequently, when a viewer signals that a particular type of information is not desired, that particular type of information is not transmitted to the client, which thereby reduces the streaming constraints on a video streaming service, and improved quality digital media information may be sent to any client using the freed-up portion of the bandwidth previously allocated to the signaling client.
1. A method of operating a stream server, the stream server causing data streams to be provided from one or more stored audio/visual files, the method comprising:
receiving a signal from a client device, said signal including an indication of a client requested presentation action that, when put into effect by the stream server, involves reducing a data rate of audio data of a first audio/visual stream being sent from the stream server to the client device or eliminating a transmission of the audio data of the first audio/visual stream to the client device, and wherein said indication comprises an indication that audio be muted;
implementing the client requested presentation action, said act of implementing the client requested presentation action including the reducing the data rate of the audio data of the first audio/visual stream or the eliminating the transmission of the audio data of the first audio/visual stream to the client device; and
determining an amount that a data rate of a second audio/visual data stream that is being sent concurrently with the first audio/visual data stream may be increased as a result of an effect on transmission bandwidth corresponding to the reduction in the data rate of the audio data of the first audio/visual stream or the elimination of the transmission of the audio data of the first audio/visual stream.
2. A method of operating a stream server, the stream server causing data streams to be provided from one or more stored audio/visual files, the method comprising:
the stream server streaming to one or more client devices a first audio/visual stream and a second audio/visual stream;
while streaming the first audio/visual stream and the second audio/visual stream, the stream server receiving a signal from one of the client devices, said signal including an indication of a client requested presentation action that, when put into effect by the stream server, involves reducing a data rate of audio data or video data of the first audio/visual stream or eliminating a transmission of the audio data or the video data of the first audio/visual stream, and wherein said indication comprises an indication that audio be muted;
implementing the client requested presentation action, said act of implementing the client requested presentation action including reducing the data rate of the audio data or the video data of the first audio/visual stream or eliminating the transmission of the audio data or the video data of the first audio/visual stream; and
determining whether a third audio/visual stream may be streamed as a result of an effect on transmission bandwidth corresponding to the reduction in the data rate of the audio data or the video data of the first audio/visual stream or the eliminating the transmission of the audio data or the video data of the first audio/visual stream.
3. A method of operating a stream server, the stream server causing data streams to be provided from one or more stored audio/visual files, the method comprising:
the stream server streaming to one or more client devices a first audio/visual stream and a second audio/visual stream;
including said first audio/visual stream and said second audio/visual stream in different Single Program Transport Streams, each of said different Single Program Transport Streams being part of a Multiple Program Transport Stream which includes both of said different Single Program Transport Streams;
while streaming the first audio/video stream and the second audio/visual stream, the stream server receiving a signal from one of the client devices, said signal including an indication of a client requested presentation action that, when put into effect by the stream server, involves reducing a data rate of audio data or video data of the first audio/visual stream or eliminating a transmission of the audio data or the video data of the first audio/visual stream;
implementing the client requested presentation action, said act of implementing the client requested presentation action including the reducing the data rate of the audio data or the video data of the first audio/visual stream or the eliminating the transmission of the audio data or the video data of the first audio/visual stream; and
determining whether a third audio/visual stream may be streamed as a result of an effect on transmission bandwidth corresponding to the reduction in the data rate of the audio data or the video data of the first audio/visual stream or the eliminating the transmission of the audio data or the video data of the first audio/visual stream.
4. A non-transitory computer program product, comprising instructions that, when put into effect, cause a stream server device to provide one or more data streams from one or more stored audio/visual files:
to interpret an indication of a client requested presentation action that will affect bandwidth requirements of audio data of a first audio/visual stream that the stream server device is actively streaming to a client device;
to identify the action from the indication and put the action into effect, causing a rate of the audio data of the first audio/visual stream to the client device to change; and
to determine an amount that a video streaming rate of a second audio/visual data stream that is being streamed concurrently with the first audio/visual stream should be changed as a result of bandwidth effects of the changed rate of the audio data of the first audio/visual stream, and to change the video streaming rate of the second audio/visual data stream according to the amount;
wherein the instructions cause the stream server device to interpret the indication of the client requested presentation action comprise:
instructions to cause the stream server device to interpret the indication to mean that the audio data of the first audio/visual stream should be changed from mono to stereo, or vice versa, or that the audio data of the first audio/visual stream should be muted or unmuted.
5. A non-transitory computer program product, comprising instructions that, when put into effect, cause a stream server device to provide one or more data streams from one or more stored audio/visual files:
to interpret an indication of a client requested presentation action that will affect bandwidth requirements of audio data of a first audio/visual stream that the stream server device is actively streaming to a client device;
to identify the action from the indication and put the action into effect, causing a rate of the audio data of the first audio/visual stream to the client device to change; and
to determine an amount that a video streaming rate of a second audio/visual data stream that is being streamed concurrently with the first audio/visual stream should be changed as a result of bandwidth effects of the changed rate of the audio data of the first audio/visual stream, and to change the video streaming rate of the second audio/visual data stream according to the amount;
wherein the it cause the stream server device to determine the amount that the video streaming rate of the second audio/visual stream should be changed as the result of the bandwidth effects further comprise instructions to cause the stream server device to determine how much bandwidth is freed up or consumed by putting the action into effect.