[PD] [pix_video] with v4l

IOhannes m zmoelnig zmoelnig at iem.at
Mon Sep 7 12:27:58 CEST 2009

Miha Tomšič wrote:
> Hello!
> On Linux using Gem 0.92 from SVN I am using [pix_video] with Logitech
> QuickCam 4000 and v4l driver but the red and blue colours are swapped.
> Is there a way to instruct [pix_video] to use different colorspace (BGR
> instead of RGB)? If not what is the cheapest way to convert from one
> colorspace to the other.

a simple _hack_ is to use YUV-colorspace with [pix_video] and then (if 
you really need it) [pix_rgba] to convert to RGBA.

> How can I get any additional information from pix_video (framerate,
> resolution ...)?

resolution: use [pix_info] to get the resolution of the current video-frame.
framerate: Gem runs at a fixed framerate as given to [gemwin].


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