On Sun, Mar 19, 2017 at 03:57:56PM +0200, Vladimir Zapolskiy wrote:

Hi Russell,

On 03/18/2017 10:43 PM, Russell King - ARM Linux wrote:

quoted

On Sat, Mar 18, 2017 at 12:58:27PM -0700, Steve Longerbeam wrote:

quoted

Can you share your gstreamer pipeline? For now, until
VIDIOC_ENUM_FRAMESIZES is implemented, try a pipeline that
does not attempt to specify a frame rate. I use the attached
script for testing, which works for me.

It's nothing more than

  gst-launch-1.0 -v v4l2src ! <any needed conversions> ! xvimagesink

in my case, the conversions are bayer2rgbneon.  However, this only shows
you the frame rate negotiated on the pads (which is actually good enough
to show the issue.)

I'm sorry for potential offtopic, but is bayer2rgbneon element found in
any officially supported by GStreamer plugin?

No it isn't.  Google is wonderful, please make use of planetary search
facilities.

Can it be a point of failure?

There's a good reason why I dumped a full debug log using GST_DEBUG=*:9,
analysed it for the cause of the failure, and tried several different
pipelines, including the standard bayer2rgb plugin.

Please don't blame this on random stuff after analysis of the logs _and_
reading the appropriate plugin code has shown where the problem is.  I
know gstreamer can be very complex, but it's very possible to analyse
the cause of problems and pin them down with detailed logs in conjunction
with the source code.

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