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Splitting a video stream into multiple substreams such that each substream can be displayed in it's own separate video area.

IP.com Disclosure Number: IPCOM000240930D
Publication Date: 2015-Mar-12
Document File: 3 page(s) / 59K

Publishing Venue

The IP.com Prior Art Database


This article is targeted towards video conferences and talks about splitting a single video stream into a plurality of video streams without the need of additional hardware, to better zoom into certain areas of the video feed that the participants may be interested in; such that all participants of the video conference will receive and be able to display the split streams in it's own separate viewing area.

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Splitting a video stream into multiple substreams such that each substream can be displayed in it's own separate video area.

In a video conference currently, when a single video camera is used in a room full of people, it can transmit only one video stream at any given time. It may focus on different areas of interest as the video conference progresses, but it still will send out only one video stream corresponding to whatever it is focusing on at the given moment.

If you need to transmit multiple streams at the same time focussing on different areas of interest, you would require additional cameras and hardware.

This article talks about eliminating the need of additional hardware to achieve multiple simultaneous video streams. It lets an user or the video-conference moderator identify various areas of interest in the content being streamed by the single video camera. Each area of interest is zoomed in and split into it's own additional stream. The participants of the video conference will then receive the original video stream and also these additional video streams as separate streams. They can then choose to arrange it in a layout of their preference.

For example:
When you have a conference video that is being streamed from a conference room with multiple speakers and participants, You could
potentially zoom into a presenter and/or additional eminent personalities and create new video windows for them.

The figure below is an illustration. The original stream set to show the entire room of people is shown on the left. When you select areas of interest (the whiteboard or projector screen and the presenter), separate video streams will be derived for these areas of interest from the original stream, and all participants will now see three different video streams as illustrated by the figure on the right.


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Known solutions

The current solutions using a single camera just zoom into the presenters at regular intervals and then pan back to the entire audience or pan to whoever else speaks in the room. This results in a loss of continuity for the other remote participants in the conference call. At times, the entire room is seen, at times, only the screen is seen or only someone else who just spoke. There is no way for the remote participants to always see the complete picture unless additional cameras are used to point to the presenter and other important participants or areas of interest (like the screen being shared)

Drawbacks of the above known solution

The known solution will require additional hardware and maintenance costs.

Need of solution

We need an easy solution so that a moderator can simply select the face of the person speak...