Appsink + Internal Data Error v4l2

[Nicolas Dufresne]

Le dim. 17 mai 2020 12 h 00, Alex Carr <abcfilm at gmail.com> a écrit :

> Hello,
>
> I have run into a problem with a new capture card, I'm just looking
> for some suggestions how to collect some more info and hopefully solve
> this problem.. maybe it's actually an OpenCV or driver problem.
>
> This is a working Gstreamer pipeline with this hardware, very happy
> with this so far.
>
> `gst-launch-1.0 v4l2src device=/dev/video0 -e ! video/x-raw,
> framerate=30/1, width=1920, height=1080 ! xvimagesink`
>
> However, This pipeline Does not work when supplied to a
> cv2.VideoCapture() in OpenCV Python 4.1.0 when I've changed to an
> Appsink over xvimagesink.
>
> cap = cv2.VideoCapture('v4l2src device=/dev/video0 ! video/x-raw,
> framerate=30/1, width=1920, height=1080 ! appsink')
>
> -truncated vague error-
> ''Error with module v4l2src: Internal Data Error"
>
> I've tried wait-on-eos=false (or true).
>
> Maybe someone has run into this before, and might have some clue about
> it. Thanks for your time.
>

OpenCV likely require specific video format not supported by your capture
card. Consider adding videoconvert element in your pipeline.



> -Alex
> _______________________________________________
> 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/20200517/1935bcef/attachment.htm>