Description of problem: .FLV or .MP4 files cannot be read. Version-Release number of selected component (if applicable): 3.2.0 How reproducible: always Steps to Reproduce: > dnf install opencv opencv-python3 > ipython3 Python 3.6.2 (default, Aug 11 2017, 11:59:59) Type 'copyright', 'credits' or 'license' for more information IPython 6.1.0 -- An enhanced Interactive Python. Type '?' for help. In [1]: import cv2 In [2]: cv2.__version__ Out[2]: '3.2.0' In [3]: cv2.VideoCapture('big_buck_bunny_720p_5mb.mp4') (DEBUG) try_init_v4l2 VIDIOC_QUERYCAP "big_buck_bunny_720p_5mb.mp4": Inappropriate ioctl for device Unable to stop the stream: Inappropriate ioctl for device Out[3]: <VideoCapture 0x7fcbfc6b2a30> In [4]: cv2.VideoCapture('big_buck_bunny_720p_5mb.flv') (DEBUG) try_init_v4l2 VIDIOC_QUERYCAP "big_buck_bunny_720p_5mb.flv": Inappropriate ioctl for device Unable to stop the stream: Inappropriate ioctl for device Out[4]: <VideoCapture 0x7fcc0cdc8f70> Actual results: (DEBUG) try_init_v4l2 VIDIOC_QUERYCAP: Inappropriate ioctl for device Expected results: Open the file and read the frames. Additional info: > cat /etc/redhat-release Fedora release 26 (Twenty Six) > uname -a Linux android 4.12.5-300.fc26.x86_64 #1 SMP Mon Aug 7 15:27:25 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux > dnf info opencv Last metadata expiration check: 0:22:57 ago on Fri 01 Sep 2017 08:25:15 PM PDT. Installed Packages Name : opencv Version : 3.2.0 Release : 2.fc26 Arch : x86_64 Size : 10 M Source : opencv-3.2.0-2.fc26.src.rpm Repo : @System From repo : fedora Summary : Collection of algorithms for computer vision URL : http://opencv.org License : BSD Description : OpenCV means Intel® Open Source Computer Vision Library. It is a collection of : C functions and a few C++ classes that implement some popular Image Processing : and Computer Vision algorithms. Available Packages Name : opencv Version : 3.2.0 Release : 2.fc26 Arch : i686 Size : 1.6 M Source : opencv-3.2.0-2.fc26.src.rpm Repo : fedora Summary : Collection of algorithms for computer vision URL : http://opencv.org License : BSD Description : OpenCV means Intel® Open Source Computer Vision Library. It is a collection of : C functions and a few C++ classes that implement some popular Image Processing : and Computer Vision algorithms. > dnf info opencv-python3 Last metadata expiration check: 0:23:02 ago on Fri 01 Sep 2017 08:25:15 PM PDT. Installed Packages Name : opencv-python3 Version : 3.2.0 Release : 2.fc26 Arch : x86_64 Size : 2.8 M Source : opencv-3.2.0-2.fc26.src.rpm Repo : @System From repo : fedora Summary : Python3 bindings for apps which use OpenCV URL : http://opencv.org License : BSD Description : This package contains Python3 bindings for the OpenCV library.
After googling I found [1] says to add -DWITH_LIBV4L=ON to build add support to V4L1 and not just V4L2 [2] , if you could install these packages from [3] and check if it fix and report back , I could do a official build for F26 . Thanks. [1] https://github.com/opencv/opencv/issues/6157 [2] V4L/V4L2: Using libv4l1 (ver 1.12.5) / libv4l2 (ver 1.12.5) [3] https://copr-be.cloud.fedoraproject.org/results/sergiomb/opencv/fedora-26-x86_64/00597410-opencv/build.log.gz
Yes it works now. I installed the following packages from [1]: > dnf install *.rpm Last metadata expiration check: 0:07:28 ago on Sat 02 Sep 2017 10:12:21 AM PDT. Dependencies resolved. ================================================================================================ Package Arch Version Repository Size ================================================================================================ Installing: opencv x86_64 3.2.0-10.fc26 @commandline 1.6 M opencv-contrib x86_64 3.2.0-10.fc26 @commandline 2.1 M opencv-core x86_64 3.2.0-10.fc26 @commandline 3.6 M opencv-python3 x86_64 3.2.0-10.fc26 @commandline 611 k Installing dependencies: ... In Python I get some errors/warnings, but the output looks good: > ipython Python 3.6.2 (default, Aug 11 2017, 11:59:59) Type 'copyright', 'credits' or 'license' for more information IPython 6.1.0 -- An enhanced Interactive Python. Type '?' for help. In [1]: import cv2 In [2]: cv2.VideoCapture('big_buck_bunny_720p_5mb.mp4') Failed to query video capabilities: Inappropriate ioctl for device libv4l2: error getting capabilities: Inappropriate ioctl for device VIDEOIO ERROR: V4L: device big_buck_bunny_720p_5mb.mp4: Unable to query number of channels DtsGetHWFeatures: Create File Failed DtsGetHWFeatures: Create File Failed Running DIL (3.22.0) Version DtsDeviceOpen: Opening HW in mode 0 DtsDeviceOpen: Create File Failed warning: GStreamer: unable to query duration of stream (/builddir/build/BUILD/opencv-3.2.0/modules/videoio/src/cap_gstreamer.cpp:846) Out[2]: <VideoCapture 0x7fa9bae451d0> Thanks! [1] https://copr-be.cloud.fedoraproject.org/results/sergiomb/opencv/fedora-26-x86_64/00597410-opencv/
opencv-3.2.0-11.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-16c5865d73
opencv-3.2.0-11.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-8d4865aad2
opencv-3.2.0-11.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-16c5865d73
opencv-3.2.0-11.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-8d4865aad2
opencv-3.2.0-12.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-d3648491e8
opencv-3.2.0-12.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-d3648491e8
opencv-3.2.0-12.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.
I still get this error with the version opencv-3.2.0-12.fc26: Failed to query video capabilities: Inappropriate ioctl for device libv4l2: error getting capabilities: Inappropriate ioctl for device VIDEOIO ERROR: V4L: device ../../Downloads/SampleVideo_1280x720_1mb.mp4: Unable to query number of channels warning: GStreamer: unable to query duration of stream (/builddir/build/BUILD/opencv-3.2.0/modules/videoio/src/cap_gstreamer.cpp:846) The links to the COPR repos are dead, are the fixes for this problem really already pushed?
(In reply to Matthias from comment #10) > I still get this error with the version opencv-3.2.0-12.fc26: > > Failed to query video capabilities: Inappropriate ioctl for device > libv4l2: error getting capabilities: Inappropriate ioctl for device > VIDEOIO ERROR: V4L: device ../../Downloads/SampleVideo_1280x720_1mb.mp4: > Unable to query number of channels > warning: GStreamer: unable to query duration of stream > (/builddir/build/BUILD/opencv-3.2.0/modules/videoio/src/cap_gstreamer.cpp: > 846) > > > The links to the COPR repos are dead, are the fixes for this problem really > already pushed? I think it is working , now you just get warnings, before you got a "DtsDeviceOpen: Opening HW in mode 0 DtsDeviceOpen: Create File Failed "