qt - Windows OpenCV VideoCapture Will Not Open Video File -



qt - Windows OpenCV VideoCapture Will Not Open Video File -

my team , working on project opencv (v. 2.4.2) , qt(v. 4.8.4). developing in qtcreator. cross-platform project looking motion in video files.

on mac osx, video file open using normal cv::videocapture object , interface , can run our programme successfully. however, on windows, file not open, throwing error on qtcreator terminal when programme exits:

warning: error opening file (../../modules/highgui/src/cap_ffmpeg_impl.hpp:361)

however, when set qtcreator 'release' build mode instead of 'debug', programme opens file should.

my teammate , have done extensive research on error , found no real solutions. have tried installing codecs, moving opencv_ffmpeg.dll file working directory of .exe, , modifying path location of opencv_ffmpeg.dll (as location of ffmpeg library.) have made sure our video valid, file path (the same video works on macos, , video file play in windows through qt's phonon module).

similar questions:

videocapture opencv 2.4.2 error in windows

problem videocapture in opencv 2.3

any ideas causing issue?

unfortunately, can't give reason these problems if utilize precompiled opencv dll's. error caused anywhere connecting ffmpeg videocapture. in our case rebuilding opencv on concerned computer fixed error.

file qt video opencv

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