Android Question Camera2 - preview still stretched

The latest version is based on B4XPages and the orientation must be locked.

OK, I think I have / understand all that.

Latest version: of B4A or of Camera2 library?
BTW, where do I download updated (if any) Camera2 library?

Based on B4XPages - yes, like I said, I used the example, which is based on B4XPages, right ?!

Orientation must be locked - you mean #SupportedOrientations: portrait or landscape and NOT unspecified ?
But, in that case, images and videos are NOT automatically rotated.

For images I have found a workaround:
- #SupportedOrientations: portrait
- detect phone orientation using sensors, rotate image, save.
For videos, like I said, I cannot process again after original video is saved.
I tried this for video, but it has no effect.
Instead of this (original code):
I put this - always roatte video, no matter what phone actual orientation is
It does not work, video is either rotated according to phone orientation or not rotated at all.

Latest version of the Camera2 example.

You are confusing different things. The stored images can be rotated if you ignore their exif header. See this code for an example of correctly reading it: https://www.b4x.com/android/forum/threads/b4x-b4xpages-intent-based-camera.120721/#content

Thank you for your help, but it's not that useful for me.
Yes, I know I'm confusing things, I'm a total beginner.
But I used the Camera2 example (see link above) and it's not working properly for me.

This new example is also different than what I need.
I need Camera2, camera preview / capture "embedded" in my app.
This example (intent) launches the default camera, captures image, approve/reject image, back to my app.
It doesn't use Camera2 at all.

Also, like I said, image orientation is OK now, using sensors.
I need video orientation help.
Again, using Camera2.