On Tue, Mar 15, 2016 at 9:18 AM, Hans Verkuil <hverkuil@xxxxxxxxx> wrote: > On 03/15/2016 08:10 AM, Ran Shalit wrote: >> Hello, >> >> This is a bit offtopic, so I will understand if you rather not discuss that... >> >> I am trying to use gstreamer with v4l2 vivi device, >> I first check the capabilities with >> >> gst-launch-1.0 --gst-debug=v4l2src:5 v4l2src device="/dev/video0" ! >> fakesink 2>&1 >> >> and it gives many capabilities such as the following: >> >> video/x-raw-yuv, format=(string)YUY2, framerate=(fraction)[1/1000, >> 1000/1], width=(int) 640, height=(int)180, interlaced=(boolean)true >> >> So I tried to run as following: >> >> gst-launch-0.10 v4l2src device="/dev/video0" ! >> video/x-raw,width=640,height=180,framerate=30 ! autovideosink >> >> But it keeps giving me auto negotiation error -4. >> Trying to give other values did not help neither. >> >> It is probaby more a gstreamer issue, but if someone is familiar and >> can shed some light on this will will help. > > Actually, I suspect that vivi is the culprit. It had some non-standard > behavior that might mess up gstreamer. One of the (many) reasons it was > replaced with vivid. > > Regards, > > Hans Hi Hans, Thanks for the quick response. Well... a minue after posting... I made another try and just added videoconvert (or ffmpegcolorspace) before autovideosink, and now it works just fine ! probably the unique size (640x180) from vivi is not supported in autovideosink, without conversion in between. So this how it works in my case , if it helps anyone with similar issue: gst-launch-0.10 v4l2src device="/dev/video0" ! video/x-raw,width=640,height=180,framerate=30 ! ffmpegcolorspace ! autovideosink Thank you very much, Ran -- 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
