reading QCamera received 0x0 bits why?
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I wouldn't worry about the informative messages, just run the code inside debugger to see where it fails. (Perhaps you know it from the debug() messages, but don't tell.)
I don't know what pixelFormats Android manages nowadays, but QVideoFrame::Format_NV21 should usually work (works on my phones), so it is at least good to add to the list.
And perhaps capturing QCamera's errors might provide information.
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I wouldn't worry about the informative messages, just run the code inside debugger to see where it fails. (Perhaps you know it from the debug() messages, but don't tell.)
I don't know what pixelFormats Android manages nowadays, but QVideoFrame::Format_NV21 should usually work (works on my phones), so it is at least good to add to the list.
And perhaps capturing QCamera's errors might provide information.
@mvuori
using NV_21 format still the same problem but prove the correctness of supporting the NV_21 pixel format