CameraBin start-capture triggers auto-focus, making captured image blurry

[Robert Hailey]

On Fri, 18 Mar 2016 09:10:43 +0100
Dimitrios Katsaros <patcherwork at gmail.com> wrote:

> Hello,
> 
> The camerabin in its self does not have support for autofocus, at
> least none that I am aware of. Are you using v4l2src with
> wrappercamerabinsrc? If that is the case I would suspect that the
> problem is renegotiation on capture. When a new capture is performed,
> the pipeline is dynamically changed to feed the image output path.
> That procs a renegotiaion. If the caps on the video/image output are
> different than the viewfinder, a new set_fmt is performed in v4l2,
> which resets the v4l2 controls and in turn resets the focus. to
> verify/fix that you can do something like:
> 
>   g_object_set (camerabin_object,
>     "viewfinder-caps", gst_caps_from_string(caps),
>     "image-capture-caps", gst_caps_from_string(caps),
>     "video-capture-caps", gst_caps_from_string(caps),
>     NULL);
> 
> 
> Make sure the caps string is the same for all 3.

Thank you, Dimitrios... I think that was *THE* missing key to my
understanding. I think that I will be able to come up with a solution
because of your help/time.

--
Robert Hailey


-- 
Robert Hailey