#1560: v4l2 device won't open after opening/closing it 16 times
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Reporter: tmatth | Type: defect
Status: new | Priority: normal
Component: avdevice | Version: git-master
Keywords: v4l2 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
In the attached case, I open and close a v4l2 device (/dev/video0) 17
times. On the 17th time, it fails to open with the following errors:
libv4l2: error attempting to open more then 16 video devices
[video4linux2,v4l2 @ 0x1f6a5c0] ioctl(VIDIOC_QUERYCAP): Bad file
descriptor
Could not open input "/dev/video0"
How to reproduce:
Build and run the attached test case with a v4l2 device connected.
I'm using the ffmpeg git master branch:
ffmpeg version N-42636-ga8d8e86 Copyright (c) 2000-2012 the FFmpeg
developers
built on Jul 19 2012 17:32:59 with gcc 4.7.0 (GCC) 20120507 (Red Hat
4.7.0-5)
configuration: --prefix=/opt/ --enable-bzlib --enable-gnutls --enable-
libv4l2 --enable-libx264 --enable-x11grab --enable-postproc --enable-
pthreads --disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --enable-pic
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1560>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
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