Re: Interfacing webcam with NetBSD

[Robert Swindells <rjs%fdy2.co.uk@localhost>]

Mayuresh <mayuresh%acm.org@localhost> wrote:
>On Sun, Nov 11, 2018 at 12:46:19PM -0000, Michael van Elst wrote:
>> Try mpv av://v4l2:/dev/video1
>> 
>> Depending on your system you may also want the option "-vo xv" (needs XVideo
>> support) or just "-vo x11".
>
>Get io error
>
>$ mpv av://v4l2:/dev/video1
>Playing: av://v4l2:/dev/video1
>[ffmpeg/demuxer] video4linux2,v4l2: ioctl(VIDIOC_G_PARM): Invalid argument
>[ffmpeg/demuxer] video4linux2,v4l2: Time per frame unknown
>[ffmpeg/demuxer] video4linux2,v4l2: ioctl(VIDIOC_STREAMON): Input/output error
>[lavf] avformat_open_input() failed
>Failed to recognize file format.
>
>Same with -vo. Also tried as root to avoid permission issue though I've
>set them right.

I'm going to commit some changes to video(4) soon that add support for
the VIDIOC_G_PARM ioctl, as well as an update to the v4l2 package.

Don't know if we will want to backport them to NetBSD-8.