Do not use compound literals (fix MSVC C4576) (#14276)
* do not use compound literals (compat cpp98)
* only fix msvc path
* remove unnecessary cplusplus check
The `codec_tag` is only available when opening a file from disk. If `AVStream` is a network stream then `fourcc` must be obtained using `codec_id`. I have tested the following scenarios:
1) Open a `.mp4` file and verify that `codec_tag` is returned (old behavior)
2) Open a `rtsp` stream and verify that `codec_fourcc` is returned (Tested with a MJPEG, H264 and H265 stream)
* may be an typo fix
* remove identical branch,may be paste error
* add parentheses around macro parameter
* simplify if condition
* check malloc fail
* change the condition of branch removed by commit 3041502861
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:
- 194be1f43e
- 91736025b2
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
Commits:
67fe57a add fixed video
db0ae2c Restore 2.4 source branch for bug fix 6317.
97ac59c Fix a memory leak indirectly caused by cvDestroyWindow
eb40afa Add a workaround for FFmpeg's color conversion accessing past the end of the buffer
421fcf9 Rearrange CvVideoWriter_FFMPEG::writeFrame for better readability
912592d Remove "INSTALL_NAME_DIR lib" target property
bb1c2d7 fix bug on border at pyrUp
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.
