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interactive charuco application fails...

asked 2017-04-26 15:18:52 -0500

stillNovice gravatar image

Hi, i have built the sample app opencv_interactive-calibration.exe and it will run ok on a webcam (although every frame is rejected, I assume the webcam is too low res)

I have a higher resolution video that i am trying to run, but when i run:

opencv_interactive-calibration.exe -v

in a cmd prompt, I get:

Hot keys:
esc - exit application
s - save current data to .xml file
r - delete last frame
u - enable/disable applying undistortion
d - delete all frames
v - switch visualization
Unable to open video source

The mov is in the same folder as the exe. i have tried converting to an avi, and I get the same issue. Can anyone help me out here?


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try: (the = is important, similar for all other cmdline params)

berak gravatar imageberak ( 2017-04-27 01:35:35 -0500 )edit

hi, thanks for your reply. I am using opencv_interactive-calibration.exe -t=charuco -pf=defaultConfig.xml -w=5 -h=7 -l=100 -s=10 -d=16 -sl=0.032 -ml=0.017 and see the same error.

antithing gravatar imageantithing ( 2017-04-27 04:17:31 -0500 )edit

".. the same error" -- which is ? you never mentioned any

berak gravatar imageberak ( 2017-04-27 11:36:22 -0500 )edit

Ah sorry, I mean that it just returns Unable to open video source.

antithing gravatar imageantithing ( 2017-04-27 11:44:29 -0500 )edit

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answered 2017-04-28 04:13:34 -0500

antithing gravatar image

Ah, I had openCv built without ffmpeg support. Never noticed before because I always used image sequences! rebuilding all libs with ffmpeg has solved this. Thank you for your time.

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thanks for coming back with an answer !

berak gravatar imageberak ( 2017-04-28 05:22:10 -0500 )edit

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Asked: 2017-04-26 15:18:52 -0500

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Last updated: Apr 26 '17