ksvideosrc: Failed to start capture

Submitted by Michael MacIntosh

Description

Created attachment 351570
GST_DEBUG=ks*:4 output

I am on windows 10 using gstreamer 1.12 and I am trying to capture video from an Osprey 460e analog capture card, and I was running into any difficulties using the ksvideosrc element.

It appears to be finding the device but is running into some errors.

My test pipeline:

gst-launch-1.0.exe ksvideosrc device-index=0 ! autovideosink

After executing that, I get a warning that it cant create or open ksclock.

It gives a warning about how it doesn't recognize the GUID for rgb8.

And then it says it can't start capture because of reason 0x048f (ERROR_DEVICE_NOT_CONNECTED), even though the device is connected and I can capture it through VLC, directshow, and the Osprey capture card driver software. My best guess (looking over the source code near https://github.com/GStreamer/gst-plugins-bad/blob/master/sys/winks/gstksvideosrc.c#L961 ), it appears to be getting the error from a call to GetOverlappedResult.

I have tested with a USB webcam to verify that the ksvideosrc does at least work for something and it does work with a USB web camera.

Also all devices on this card appear to have the same issue. I also get this same behavior from autovideosrc as well.

Let me know if I can provide anymore information, or if anyone has any suggestions on things to try.

Attached is my GST_DEBUG=ks*:4 output.

Attachment 351570, "GST_DEBUG=ks*:4 output":
ksvideosrc_debug_4_output.txt

Version: 1.12.0