604a5753fa
According to the AVCaptureDevice documentation, the device must be locked before starting the capture session to prevent the activeFormat from being overridden. We now do that, but only if we explicitly set an activeFormat. Otherwise the device is not locked, which allows the session to find an appropriate format for the capture device. The device is also locked when enabling video capture, as doing so might also reset the activeFormat. Task-number: QTBUG-49170 Change-Id: I75478fd4bbfec96cd2abd2c3ae2951088b38978e Reviewed-by: Timur Pocheptsov <timur.pocheptsov@theqtcompany.com>