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Unread 10-03-2013, 03:34
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virtuald virtuald is offline
RobotPy Guy
AKA: Dustin Spicuzza
FRC #1418 (), FRC #1973, FRC #4796, FRC #6367 ()
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Join Date: Dec 2008
Rookie Year: 2003
Location: Boston, MA
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OpenCV + ffmpeg hangs at low resolutions and low framerate

In case anyone is using OpenCV + ffmpeg to do their image processing, I found a bug in OpenCV that causes ffmpeg to hang for up to 30 seconds or so when trying to connect to the AXIS M1011 camera. I'm surprised the SmartDashboard doesn't run into this problem, since it appears to use ffmpeg underneath the hood for capturing with camera extension widgets (but not for the default camera widget that comes with it).

If you're interested in more details, check out the bug reports at OpenCV and FFMpeg.
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Maintainer of RobotPy - Python for FRC
Creator of pyfrc (Robot Simulator + utilities for Python) and pynetworktables/pynetworktables2js (NetworkTables for Python & Javascript)

2017 Season: Teams #1973, #4796, #6369
Team #1418 (remote mentor): Newton Quarterfinalists, 2016 Chesapeake District Champion, 2x Innovation in Control award, 2x district event winner
Team #1418: 2015 DC Regional Innovation In Control Award, #2 seed; 2014 VA Industrial Design Award; 2014 Finalists in DC & VA
Team #2423: 2012 & 2013 Boston Regional Innovation in Control Award


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