I am trying to install opencv 2.4.13 on my rpi3. During this process, libswscale-ffmpeg3 needs to be installed. However, rpi3 returns with this error:
E: Unable to locate package libswscale-ffmpeg3
Any ideas on how to fix this error? Thanks in advance.
Related
I am new to ROS, I am trying to install naoqi for ROS noetic in ubuntu 20.04LTS,i have been following the steps given in the link : http://wiki.ros.org/nao/Tutorials/Installation
While checking the naoqi installation and running the give code line ($ ~/naoqi/naoqi-sdk-2.1.4.13-linux64/naoqi), i got stuck at this
error-image
So I tried to search for the problem in online, but i am not able to get it, the only thing i found is that the packages were deprecated, and i dont know how to solve that while installing naoqi,can someone please help me in solving this
Thank you.
list changed sources according to your region?
Ever tried $sudo apt-get update? If there is any error, please change the source file 'source.list' first.
I tried to install tidytext package and received below dependency-ERROR. Please help.
ERROR: dependency ‘ISOcodes’ is not available for package ‘stopwords’
ERROR: dependency ‘stopwords’ is not available for package ‘tidytext’
Looks like you need to install the ISOcodes package. Try that out:
install.packages("ISOcodes")
I am trying to install opencv using conda on a windows machine. I am running the following command:
conda install --channel https://conda.anaconda.org/menpo opencv
and getting the following error:
Solving environment: done
## Package Plan ##
environment location: C:\ProgramData\Anaconda2
added / updated specs:
- opencv
The following NEW packages will be INSTALLED:
opencv: 2.4.11-py27_1 menpo
Proceed ([y]/n)? y
Preparing transaction: done
Verifying transaction: done
Executing transaction: - WARNING conda.gateways.disk:exp_backoff_fn(49):
Uncaught backoff with errno EEXIST 17
failed
ERROR conda.core.link:_execute(502): An error occurred while installing
package 'None'.
IOError(13, 'Permission denied')
Attempting to roll back.
Rolling back transaction: done
IOError(13, 'Permission denied')
WindowsError(183, 'Cannot create a file when that file already exists')
Other people seem to have similar problems (https://github.com/conda/conda/issues/4393). One of the solutions I found was to downgrade conda. I am currently using conda 4.5.4 and when I try to downgrade using conda install conda=4.2 I get the following error:
The following packages will be DOWNGRADED:
conda: 4.5.4-py27_0 --> 4.2.16-py27_0
conda-build: 3.10.5-py27_0 --> 3.9.2-py27_0
Proceed ([y]/n)? y
Preparing transaction: done
Verifying transaction: done
Executing transaction: failed
ERROR conda.core.link:_execute(502): An error occurred while uninstalling
package 'defaults::conda-build-3.10.5-py27_0'.
WindowsError(5, 'Access is denied')
Attempting to roll back.
Rolling back transaction: done
WindowsError(5, 'Access is denied')
Regarding this issue I found the following similar posts:
conda update conda permission error
Anaconda : Update conda failed because permission error
But the solutions given do not fix my problem.
I also had a problem with installation and usage of the OpenCV library. If you have such а problem, you can try:
uninstall opencv with: conda remove --yes opencv (in case you have an installation but it does not work properly)
install OpenCV through pip: pip install opencv-python
I think this is a problem with opencv that comes from Anaconda channels. I came across this problem four months ago. Тhe problem may be resolved right now.
My guess is that you did not run this command with administrator privileges！
Hello i am a new user of ubuntu. I am trying to install mesa in ubuntu.The configuration process is ok.But when i am try to install, it shows this message
xmlconfig.c:34:19: fatal error: expat.h: No such file or directory
what will be the solutions of this problem?
Thanks in advance
Have you got the build-essential package installed?
I was trying to install WireShark 1.10.5 in linux.I was following the instructions provided with the software. Now,I am having problems while installing. It says pod2man cannot be found. How can i fix this?
checking for pod2man... no
configure: error: I couldn't find pod2man; make sure it's installed and in your path
try
apt-get install perl-modules
According to FOSSology bug 5619:
the pod2man utility which is used by the build process has been moved to a different package in Fedora 19 called perl-podlators
In previous versions it was in the package perl
so it appears you need to install the package "perl-podlators" to get pod2man.