On Tue, Jun 17, 2014 at 11:39 AM, <meino.cra...@gmx.de> wrote: > Canek Peláez Valdés <can...@gmail.com> [14-06-17 00:40]: >> On Mon, Jun 16, 2014 at 12:23 PM, <meino.cra...@gmx.de> wrote: >> > Hi, >> > >> > is there any other application than guvcview be able to control the uvc >> > parameters >> > of a uvc camera (Logitech C920) while gstreamer is reading its device >> > (/dev/video1) ? >> >> What parameters? Usually the v4l2src element in gstreamer is able to >> change the video parameters (norm, brightness, hue, contrast, etc.) >> >> gst-inspect-1.0 v4l2src will tell you about all the possible >> parameters that v4l2src can handle. >> >> Regards. >> -- >> Canek Peláez Valdés >> Profesor de asignatura, Facultad de Ciencias >> Universidad Nacional Autónoma de México >> > > > Hi Canek, > > ...yesno. > Some aspects of the camera like brightness, focus, pan, tilt etc. > are hardly set when not done interactively. > > So I need an application with sliders, knobs etc to tweak and tune > such parameters while watching the stream... > > Is there one like that?
You can use cheese; it allows you to set brightness, constrast, saturation and hue using sliders. Approximating those to the 32 bit signed values that v4l2src uses should be easy. Regards. -- Canek Peláez Valdés Profesor de asignatura, Facultad de Ciencias Universidad Nacional Autónoma de México
