[FFmpeg-devel] OpenCV filter should be built as C++, and C builds fail since OpenCV 3.4.1

Jeff Cook jeff.cook at strongstrata.com
Mon Mar 19 15:35:22 EET 2018


Hello,

Please see the bug report at https://github.com/opencv/opencv/issues/10963 , which discusses OpenCV's failure to build as pure C since upstream version 3.4.1, and also discusses how all modules that use OpenCV 2 or later should be compiled as C++ to avoid esoteric issues and serious breakages.

There is a large amount of discussion there that I don't want to needlessly duplicate and/or badly summarize here, but the high-level overview is that it seems that ffmpeg will need to convert avfilter/vf_opencv.c to build as C++ if the OpenCV filter is going to continue to work. The current situation is affecting many prominent projects like VLC.

Thanks,
Jeff
--
  Jeff Cook
  jeff.cook at strongstrata.com


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