Casting data from v4l2src

[Andrew Grace]

Not sure if this affects anything, but the docs state that videoparse is deprecated and to look at rawvideoparse instead. 

(https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/gst-plugins-bad-plugins-videoparse.html <https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-bad-plugins/html/gst-plugins-bad-plugins-videoparse.html>)

Andrew

> On Mar 21, 2017, at 6:57 AM, Kristoffer Koch <kristoffer at huddly.com> wrote:
> 
> Hi,
> 
> We're developing a UVC camera, and as a part of our production test, we set the camera into a raw mode, where we output the raw bayer image.
> 
> Because reasons, we must lie in the USB-descriptors, so we say that we output a YVYU image, while it is really bayer.
> 
> Of course, if I do
> 
>   gst-launch-1.0 v4l2src ! xvimagesink
> 
> it "works", but with a green image.
> 
> I'm trying to override the format, but I'm not having any luck:
> 
>   gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,format=YVYU,width=3456,height=2592,framerate=5/1 ! videoparse ! video/x-raw,format=rgb,width=3456,height=2592  ! xvimagesink
> Setting pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock
> ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data flow error.
> Additional debug info:
> gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
> streaming task paused, reason not-negotiated (-4)
> Execution ended after 0:00:00.001297994
> Setting pipeline to PAUSED ...
> Setting pipeline to READY ...
> Setting pipeline to NULL ...
> Freeing pipeline ...
> 
> I tried turning up the debug level, but there's not any more details coming from the v4l2src element, as far as i can see. If anyone have some hints, it's maybe a bit hard to reproduce, but I guess you can try to "cast" data on any camera.
> 
> Best regards,
> Kristoffer Koch
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20170321/0e2f1f60/attachment.html>