Using codec->time_base is deprecated to specify muxer settings.
Resolves issue with FPS value for AVI files with FFmpeg 4.0.

Related FFmpeg commits:
- https://github.com/FFmpeg/FFmpeg/commit/194be1f43ea391eb986732707435176e579265aa
- https://github.com/FFmpeg/FFmpeg/commit/91736025b2807995e29bd0661807c1c84f515fef

with the ffmpeg backend

* Haiku supporting patches

* Revert uneeded changes

* Whitespace cleanup

reuse av_guess_sample_aspect_ratio() if available in ffmpeg

> cap_ffmpeg_impl.hpp:1710:11: error: 'uchar' does not name a type

Found via `codespell`

  * disable the warning in CMake, not int the code using pragma

Prevents access data after the end of input buffer near 4K page boundaries

Fix build with FFmpeg master. Some deprecated APIs have been removed. (#10011)

* Fix build with FFmpeg master.

* ffmpeg: update AVFMT_RAWPICTURE support removal

* Using environment variable to store options parsed by av_dict_parse_string(ENV{OPENCV_FFMPEG_CAPTURE_OPTIONS}, ";", "|")

* Adding missing mandatory flags parameter

* Guarding against missing function via LIBAVUTIL version

* Code review fixes

Copy/paste error due to coder mistake reverted
Proper version checking for LIBAVUTIL_BUILD

https://sourceforge.net/p/predef/wiki/OperatingSystems

Fix docs build failure by re-indenting with spaces instead of tabs.

Trailing whitespace fixes. http://pullrequest.opencv.org/buildbot/builders/precommit_docs/builds/5152/steps/whitespace/logs/stdio

mingw build fix.

Current implementation returns NaN for some configs of FFMPEG, call default get_fps() instead (as also used by PROP_POS_MSEC)

not only print file-not-found as a warning but also print the name of the problematic file and the uri used for the open attempt

Catched on Ubuntu 12.04 with FFMPEG:
  codec:                     YES (ver 53.35.0)
  format:                    YES (ver 53.21.1)
  util:                      YES (ver 51.22.3)
  swscale:                   YES (ver 2.1.0)
  resample:                  NO
  gentoo-style:              YES

Migration have been done for these ffmpeg/libav changes:

2013-12-11 - 29c83d2 / b9fb59d,409a143 / 9431356,44967ab / d7b3ee9 - lavc 55.45.101 / 55.28.1 - avcodec.h
  av_frame_alloc(), av_frame_unref() and av_frame_free() now can and should be
  used instead of avcodec_alloc_frame(), avcodec_get_frame_defaults() and
  avcodec_free_frame() respectively. The latter three functions are deprecated.

2012-10-08 - ae77266 / 78071a1 - lavu 51.74.100 / 51.42.0 - pixfmt.h
  Rename PixelFormat to AVPixelFormat and all PIX_FMT_* to AV_PIX_FMT_*.
  To provide backwards compatibility, PixelFormat is now #defined as
  AVPixelFormat.
  Note that this can break user code that includes pixfmt.h and uses the
  'PixelFormat' identifier. Such code should either #undef PixelFormat
  or stop using the PixelFormat name.

- fix compilation for old libraries
- update codec/tag selection logic
- add documentation note about MP4 container tags

Conflicts:
	modules/highgui/src/cap_ffmpeg_impl.hpp