Adaptive video quality for large-scale video conferencing

1. A system for adaptively adjusting video quality in a virtual event hosted by a virtual event hosting platform, the system comprising:

a video server;

at least one processor; and

one or more non-transitory computer-readable media storing computer-executable instructions that when executed by the at least one processor, perform a method of adaptively adjusting the video quality in the virtual event hosted by the virtual event hosting platform, the method comprising:

receiving, at the video server, a plurality of presenter video streams associated with a plurality of presenter computing devices of a plurality of presenters, the plurality of presenter video streams forming the virtual event, wherein each presenter computing device is associated with a presenter video stream of the plurality of presenter video streams;

forwarding the plurality of presenter video streams to each of the plurality of presenter computing devices, the plurality of presenter video streams displayed according to a predefined video stream layout;

monitoring, by the video server, an audio activity level of the presenter video stream and a plurality of device states for the plurality of presenter computing devices, wherein the plurality of device states comprises a bandwidth availability, a processing load, and a battery level;

detecting, by the video server, a first change of at least one device state of the plurality of device states, the first change of the at least one device state associated with a presenter computing device of the plurality of presenter computing devices;

in response to detecting the first change of the at least one device state, automatically generating a request, by the video server, for the presenter computing device to apply a video super-resolution technique to the presenter video stream, wherein the video super-resolution technique is selected based at least in part on a number of presenter video streams for the virtual event;

responsive to a second detection that the audio activity level is below a predetermined threshold, suppressing at least a portion of audio data associated with the presenter video stream based on the audio activity level;

receiving, at the video server, an updated presenter video stream from the presenter computing device associated with the presenter video stream;

forwarding, from the video server, the updated presenter video stream to each presenter computing device according to the predefined video stream layout; and

responsive to a third detection of a second change of the at least one device state of the presenter computing device, automatically generating a second request, by the video server, for the presenter computing device to disable the video super-resolution technique.

2. The system of claim 1 , wherein the predefined video stream layout is associated with a presenter hierarchy.

3. The system of claim 2 , wherein the presenter hierarchy defines at least one of a video frame position in the predefined video stream layout or a presenter authorization level for the virtual event.

4. The system of claim 2 , wherein the method further comprises:

detecting a speaker from the plurality of presenter video streams; and

in response to detecting the speaker, promoting the speaker within the presenter hierarchy.

5. The system of claim 1 , wherein the method further comprises:

mixing, at the video server, the plurality of presenter video streams into a combined video stream for the virtual event; and

forwarding, from the video server, the combined video stream to a plurality of attendee computing devices associated with a plurality of attendees of the virtual event.

6. The system of claim 5 , wherein the method further comprises forwarding, from the video server, the updated presenter video stream as a part of the combined video stream to the plurality of attendee computing devices.

7. A computer-implemented method for adaptively adjusting video quality in a virtual event hosted by a virtual event hosting platform, the computer-implemented method comprising:

receiving a plurality of presenter video streams associated with a plurality of presenter computing devices of a plurality of presenters, the plurality of presenter video streams forming the virtual event, wherein each presenter computing device is associated with a presenter video stream of the plurality of presenter video streams;

forwarding the plurality of presenter video streams to each of the plurality of presenter computing devices, the plurality of presenter video streams displayed according to a predefined video stream layout;

monitoring an audio activity level of the presenter video stream and a plurality of device states for the plurality of presenter computing devices, wherein the plurality of device states comprises a bandwidth availability, a processing load, and a battery level;

detecting a first change of at least one device state of the plurality of device states, the first change of the at least one device state associated with a presenter computing device of the plurality of presenter computing devices;

in response to detecting the first change of the at least one device state, automatically generating a request for the presenter computing device to apply a video super-resolution technique to the presenter video stream, wherein the video super-resolution technique is selected based at least in part on a number of presenter video streams for the virtual event;

responsive to a second detection that the audio activity level is below a predetermined threshold, suppressing at least a portion of audio data associated with the presenter video stream based on the audio activity level;

receiving an updated presenter video stream from the presenter computing device associated with the presenter video stream;

forwarding the updated presenter video stream to each presenter computing device according to the predefined video stream layout; and

responsive to a third detection of a second change of the at least one device state of the presenter computing device, automatically generating a second request for the presenter computing device to disable the video super-resolution technique.

8. The computer-implemented method of claim 7 , wherein the predefined video stream layout is associated with a presenter hierarchy.

9. The computer-implemented method of claim 8 , wherein the presenter hierarchy defines at least one of a video frame position in the predefined video stream layout or a presenter authorization level for the virtual event.

10. The computer-implemented method of claim 8 , further comprising:

detecting a speaker from the plurality of presenter video streams; and

in response to detecting the speaker, promoting the speaker within the presenter hierarchy.

11. The computer-implemented method of claim 7 , further comprising:

mixing the plurality of presenter video streams into a combined video stream for the virtual event; and

forwarding the combined video stream to a plurality of attendee computing devices associated with a plurality of attendees of the virtual event.

12. The computer-implemented method of claim 11 , further comprising:

forwarding the updated presenter video stream as a part of the combined video stream to the plurality of attendee computing devices.

13. One or more non-transitory computer-readable media storing computer-executable instructions that, when executed by at least one processor of a virtual event hosting platform, cause the virtual event hosting platform to perform operations comprising:

receiving a plurality of presenter video streams associated with a plurality of presenter computing devices of a plurality of presenters, the plurality of presenter video streams forming a virtual event, wherein each presenter computing device is associated with a presenter video stream of the plurality of presenter video streams;

forwarding the plurality of presenter video streams to each of the plurality of presenter computing devices, the plurality of presenter video streams displayed according to a predefined video stream layout;

monitoring an audio activity level of the presenter video stream and a plurality of device states for the plurality of presenter computing devices, wherein the plurality of device states comprises a bandwidth availability, a processing load, and a battery level;

detecting a first change of at least one device state of the plurality of device states, the first change of the at least one device state associated with a presenter computing device of the plurality of presenter computing devices;

in response to detecting the first change of the at least one device state, automatically generating a request for the presenter computing device to apply a video super-resolution technique to the presenter video stream, wherein the video super-resolution technique is selected based at least in part on a number of presenter video streams for the virtual event;

responsive to a second detection that the audio activity level is below a predetermined threshold, suppressing at least a portion of audio data associated with the presenter video stream based on the audio activity level;

receiving an updated presenter video stream from the presenter computing device associated with the presenter video stream;

forwarding the updated presenter video stream to each presenter computing device according to the predefined video stream layout; and

responsive to a third detection of a second change of the at least one device state of the presenter computing device, automatically generating a second request for the presenter computing device to disable the video super-resolution technique.

14. The one or more non-transitory computer-readable media of claim 13 , wherein the predefined video stream layout is associated with a presenter hierarchy.

15. The one or more non-transitory computer-readable media of claim 14 , wherein the presenter hierarchy defines at least one of a video frame position in the predefined video stream layout or a presenter authorization level for the virtual event.

16. The one or more non-transitory computer-readable media of claim 14 , wherein the computer-executable instructions further cause the virtual event hosting platform to perform operations comprising:

detecting a speaker from the plurality of presenter video streams; and

in response to detecting the speaker, promoting the speaker within the presenter hierarchy.

17. The one or more non-transitory computer-readable media of claim 13 , wherein the computer-executable instructions further cause the virtual event hosting platform to perform operations comprising:

mixing the plurality of presenter video streams into a combined video stream for the virtual event; and

forwarding the combined video stream to a plurality of attendee computing devices associated with a plurality of attendees of the virtual event.

18. The one or more non-transitory computer-readable media of claim 17 , wherein the computer-executable instructions further cause the virtual event hosting platform to perform operations comprising:

forwarding the updated presenter video stream as a part of the combined video stream to the plurality of attendee computing devices.