* on windows opencv uses pre-built ffmpeg binaries, built with proper flags (without gpl components) and wrapped with simple, stable opencv-compatible api the binaries are opencv_videoio_ffmpegdll (version for 32-bit windows) and opencv_videoio_ffmpeg_64dll (version for 64-bit windows). Download opencv_ffmpegdll. Check your firewall and cmake setup or download these files manually: #5546 #5895 #5973 also you can disable these features if you don't work with video via ffmpeg alalek closed this feb 16, 2016.
download opencv_ffmpeg.dll
Opencv is a highly optimized library with focus on real-time applications cross-platform c++, python and java interfaces support linux, macos, windows, ios, and android. Wrapped with simple, stable opencv-compatible api. the binaries are opencv_videoio_ffmpeg.dll (version for 32-bit windows) and: opencv_videoio_ffmpeg_64.dll (version for 64-bit windows). the pre-built opencv_videoio_ffmpeg*.dll is: * lgpl library, not bsd libraries. * loaded at runtime by opencv_videoio module..