Guys I'm adding v4l2 output device support for VLC/ffmpeg/libav (I'm using v4l2loopback [1] driver for testing) but I have a problem which I can't seem to find a solution. VLC [2] uses VIDIOC_CROPCAP [3] to detect the pixelaspect ratio of the input it receives from v4l2 device. But I can't seem to find a way to set struct v4l2_cropcap.pixelaspect when I'm outputting data to the device and the result is that VLC assumes pixelaspect is 1:1. I was hoping that VIDIOC_S_CROP [4] would allow setting pixelaspect but according to docs that is not case. What am I missing? How to set pixelaspect values returned by VIDIOC_CROPCAP? [1]: https://github.com/umlaeute/v4l2loopback [2]: http://git.videolan.org/?p=vlc.git;a=blob;f=modules/access/v4l2/demux.c;hb=HEAD#l248 [3]: http://www.linuxtv.org/downloads/v4l-dvb-apis/vidioc-cropcap.html [4]: http://www.kernel.org/doc/htmldocs/media/vidioc-g-crop.html -- Georgi Chorbadzhiyski http://georgi.unixsol.org/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
