v4l2src with HDMI

Nicolas Dufresne nicolas.dufresne at collabora.com
Wed Jul 16 12:44:06 PDT 2014


Le lundi 14 juillet 2014 à 13:03 +0000, Meenakumari Shedole a écrit :
> 
> Hi All.
> 
> we are using following gstreamer pipe with HDMI port.
> 
> gst-launch-1.0 v4l2src device=/dev/video0 !
> video/x-raw,width=1920,height=540 ! xvimagesink
> 
> Our objective is to run v4l2src with HDMI_RX on out target and we
> tried by adding video caps,filter,formats.
> we are getting "Error: Cannot capture at 1920x540" and "unknown sensor
> format, unknown pixel format error" for more error I attached log
> file.
>  
> Any suggestion will be helpful.

The attached trace does not contain any useful information. If you are
developing a new driver, make sure to run v4l2-compliance from latest
git master (http://git.linuxtv.org/cgit.cgi/v4l-utils.git/ ) that may
save you some time.

To produce a useful trace, I would suggest to use GST_DEBUG="v4l2*:7".
This should dump everything being done on the V4L2 side. In general, you
should also test with at least GST_DEBUG=3 to see meaningful trace.
1920x540 does not seem very standard, maybe you should start by letting
GStreamer negotiation a valid resolution ?

>  
> Thanks and Regards,
> Meena
>  
> 
> 
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