Making delay in camera - kotlin

Issue

I'm trying to make application with camera delay. It should work like this:

• user see preview of live camera
• user choose for example delay 5 sec
• after waiting delay time user see that what camera saw 5 sec ago.

I thought about taking frames from preview and showing them after this delay time, but I'm not sure how to take them and make "movie" from them.
I was thinking about CameraX but I'm not sure that this is the best option.

I will really appreciate every help.

Solution

You can use CameraX as well for your project. Of course I won't go into so much detail but you can follow a path like:

• Do not bind a preview use case and do not use preview view.
• Instead use an Image view or equivalent in which you can set/draw an image.
• Do bind ImageAnalysis use case.
• Get the frames for ImageAnalysis and then send it directly to be drawn onto the view mentioned above. (Image view might be too expensive, not sure)
• In the above step you can add a delay function to delay drawing as much as you wish.

Of course this is probably not the most effective or elegant way to solve this, but it would work.

Answered By - Orcun