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QT 5.8.0 VideoOutput (QML) YUV 4:2:2 (YUYV, UYVY) video rendering
In Qt 5.8.0 Release note, https://wiki.qt.io/New_Features_in_Qt_5.8 ,
-VideoOutput (QML) now supports rendering YUV 4:2:2 (YUYV, UYVY) video frames.
So how to test this? Is there any example code for this?
is this for UYVY video only or Camera UYVY output can also be displayed?
It's been written using a camera as input and the OS multimedia framework provided YUV4:2:2 frames.
I also tried 5.8.0 QT C++ camera example.
but for this example camera preview seen for 1-2 sec and then ubuntu hangs. And also the preview appear with wrong color conversion format.
So i tried minimal camera example.
But when i start camera following error comes
Unable to open the camera "" for read to query the parameter info: "No such file or directory"
So how can i preview UYVY camera preview in this example?
If the whole OS hangs it would rather be a driver problem.
Can you state whats wrong in the driver?
The Driver works with Gstreamer.
Do you mean that if you use gstreamer directly everything works but if you start a Qt application your whole computer freezes ? ("ubuntu hangs" in your last post)
Ya if i use gstreamer pipeline directly or use qt-gstreamer camera preview works with gstreamer videosink elements.
But as now want to preview camera in QT / QML window, i am using 5.8.0 camera example. And ubuntu hangs when i start this example.
I think i need to modify this example to be able to preview UYVY camera output.
IIRC QtGstreamer also provides a QML element that you can use so if you already have it running with it then I'd just use it directly.
I have already tried that and i am getting Reddish preview for UYVY to I420 conversion. I already posted this problem in other posts.
In one of the post you told me to use 5.8.0 which has UYVY support. So Now i had that version so i asked how to evaluate this?
And can i play UYVY raw video on QML?