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Using v4l2loopback = Internal data flow error. / reason not-negotiated (-4) #97
Using a simple pipeline like this works:
From my raspi:
From my compute (crashing see above):
Today I'm not able to make it works with videotestsrc! Really lost here...
I compiled from master for this kernel.
Yes! It works. For your information, it is also working when you follow this step:
As for the initial question, I tried adding ! queue ! (everywhere also) but it's still complaining. Will try to find a pipeline that works... Will post back if I succeed.