- adding save of videodump files for debugging purposes
- adding make target checkdumpfile to test and gain some basic information
  on videodumpfiles

2022-11-07:
- fixed: clear control grid after stoping a recording
- fixed: serval gtk warnings fixed. Checked if scale has a valid
  min/max setting.
- adding:  nother 24bit pixel format BGR24

2022-11-03:
- fixed: grabbing frame from SVBONY cam is not blocking other threads.
- fixed: converting input pixelformat correctly. Finshed implementing
  pixelformat V4L2_PIX_FMT_RGB24 and V4L2_PIX_FMT_BGR24

2022-10-30:
- fixing many bugs check change log.
  controls are back working, automatic format detection.
  adding alot FIXMEs to the code.

2021-11-17:
- adding basic support for SBVcams like SV-305


2021-11-15:
- JSON read changed, space was interpreted as '\n'
- adding support for multiple drivers

2021-10-25:
- adding support for different resolution and pixelformat
- adding position/movement vector in the top left corner
- saving/loading the default config is working now
- saving and recalling presetbuttons are working
- some code cleanup

2021-10-10:
- basic object detection and image filter added
- save image works

2021-09-21:
- scaling the video to screensize works.
- controls can be set via gui

2021-09-08:
- grab video from old type of cameras is working

2021-09-15:
- grab video from cammeras only supporting mjpeg stream