Record video while Image Stream process is working

I'm pretty sure this is a common problem in a lot of applications and not a strange and isolated request. I am developing an application to create face filters so I need to process each image to get the face keypoints, but if I do that, there is no way to record a vídeo. It is simply useless if I can't record it.
I don't care if the video is recorded with the processed images or not, I can do it later again, but at least have that video somewhere.

The thing here is there is not a workaround, If you want to record video and process images, you should create a new plugin.

Proposal

I don't know how difficult it is or why, but it is definitely possible. There are applications in the market doing that and other Flutter plugins capable of that also like https://pub.dev/packages/rtmp_publisher or https://github.com/mtellect/CameraDeepAR

I don't think this should be an external package but a feature of the actual camera plugin.