strong and retain are synonymous but using strong along with  obsolete synonym retain in one file is negligent

Returning to Win2k value is possible via this CMake option:

    cmake -DOPENCV_EXTRA_FLAGS="/D_WIN32_WINNT=0x0500" ...

Correcting return type from videoDevice::findType to be int thus allowing detection of failed device init request

All of these: (performance) Prefer prefix ++/-- operators for non-primitive types.
[modules/calib3d/src/fundam.cpp:1049] -> [modules/calib3d/src/fundam.cpp:1049]: (style) Same expression on both sides of '&&'.

"Eat" unexpected backend exceptions

- Allows using non-default device names such as /dev/v4l/by-path/pci-0000:00:1d.0-usb-0:1.1:1.0-video-index0

CvVideoWriter_GStreamer assumes a JPEG encoded stream if the height of
the given frame size is 1.

videoconvert might not be present on a manual pipeline, but appsink must
be.

Fixed regression in cv::VideoCapture with gstreamer back end that prevented viewing of rtsp streams.

cosmetic changes to fix this warning.
real bugs not found

- added CAP_PROP_XI_SENSOR_BOARD_TEMP parameter
- added acquisition resetting for paramters that require it

- fixed getProperty call definition
- added new parameter defitions

removed whitespaces

Reworked enumerators to keep values from previous commit

ximea enums fixes

- fixed whitespaces issue
- fixed duplicate enum values error

ximea enum definitions update

- fixed videioio.hpp code style
- fixed ABI violation in enums
- added new parameter handlers to cpp

XIMEA setProperty update

Added acquisition resetting to buffer size adjustment parameters.