VideoCapture gives warnings after rev8411 change to "cap.cpp" (Bug #1984)

Added by Shervin Emami almost 13 years ago. Updated almost 10 years ago.

Status:Cancelled Start date:2012-05-25
Priority:Low Due date:
Assignee:Alexander Reshetnikov % Done:

0%
Category:highgui-camera
Target version:-
Affected version:2.4.0 - 2.4.8 Operating System:Any
Difficulty: HW Platform:Any
Pull request:

Description

My webcam was working perfectly in rev8410 (using V4L2 on 64-bit Ubuntu), but "modules/highgui/src/cap.cpp" was modified in rev8411 and now I get 2 warning messages for every single frame:

HIGHGUI ERROR: V4L2: Unable to get property <unknown property string>(1) - Invalid argument
HIGHGUI ERROR: V4L2: Unable to get property <unknown property string>(7) - Invalid argument

Here is the SVN log of the change:

r8411 | znah | 2012-05-22 00:58:31 -0700 (Tue, 22 May 2012) | 1 line
Changed paths:
   M /trunk/opencv/modules/highgui/src/cap.cpp

FIX: VideoCapture::read() was returning empty image for camera captures

Note that video capture still works with the change, its just that it gives hundreds of warning messages to "stderr" so maybe the change r8411 has a bug?

Associated revisions

Revision 6e8386f7
Added by Andrey Pavlenko about 11 years ago

Merge pull request #1984 from ilya-lavrenov:tapi_perf

History

#1
Updated by Andrey Kamaev over 12 years ago

  • Category changed from highgui-images to highgui-camera

#2
Updated by Vadim Pisarevsky almost 10 years ago

let's cancel very old bug in a hope that they are not relevant anymore; please, reopen if they are still relevant

  • Status changed from Open to Cancelled
  • HW Platform set to Any
  • Operating System set to Any
  • Affected version set to 2.4.0 - 2.4.8

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