How to fix gstreamer error in Qt5? - mp3

I want to create a small mp3 player as a toy project so started with Qt for the GUI. When I try to play an mp3 file i get this error.
Warning: "No decoder available for type 'audio/mpeg, mpegversion=(int)1,
mpegaudioversion=(int)1, layer=(int)3, rate=(int)44100, channels=(int)2,
parsed=(boolean)true'."
Error: "Your GStreamer installation is missing a plug-in."
I installed gstreamer and it's plugins after googling around
sudo apt-get install gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav
But I still get the error. How do I fix it?

I had the same problem.
After using below code it fixed.
sudo add-apt-repository ppa:mc3man/gstffmpeg-keep
sudo apt-get update
sudo apt-get install gstreamer0.10-ffmpeg
sudo apt-get install gstreamer0.10-plugins-ugly
Qt Creator 3.4.2 Ubuntu 14.04

I tried digging a little into this and according to this thread in the Qt forums the issue seems to be that the QtMultimedia module is still using GStreamer 0.10 as a backend - and from that it needs the gstreamer-0.10-ffmpeg plugin which is not available in some distros anymore due to the move to libav.
If you're using a flavour of Ubuntu you can try installing gstreamer-0.10-ffmpeg from Doug McMahon's ppa:
sudo add-apt-repository ppa:mc3man/gstffmpeg-keep
sudo apt-get update
sudo apt-get install gstreamer0.10-ffmpeg

On Debian8, QT5.7, I'm executing this:
sudo apt-get install gstreamer1.0*
sudo apt-get install gstreamer0.10*
this is not the best way, but it works.
Regards.

On Ubuntu20.04, I solved this problem by:
sudo apt-get install gstreamer1.0-libav

Related

Installing g++-multilib on MacOs

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How to install python-mysqldb for Python 2.7 in Ubuntu 20.04 (Focal Fossa)?

I've tried "apt-get install python-mysqldb" which results in:
root#ps1svr:~# apt-get install python-mysqldb
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package python-mysqldb is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
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E: Package 'python-mysqldb' has no installation candidate
Note: "apt-get install python3-mysqldb" works, however I have a lot of code written for Python 2.x which no longer runs, and this is causing enough problems that I'm probably going to have to reinstall Ubuntu 18.04
Also you can just add the Ubuntu 18.04 repositoery to install the python-mysqldb package:
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sudo apt update
sudo apt install -y python-mysqldb
This will download, build and install it for all users, using pip
sudo apt install libmysqlclient-dev python2.7-dev
wget https://bootstrap.pypa.io/get-pip.py
sudo python2.7 get-pip.py
sudo wget https://raw.githubusercontent.com/paulfitz/mysql-connector-c/master/include/my_config.h -O /usr/include/mysql/my_config.h
sudo pip2 install MySQL-python
Answer found from MySQLdb install error - _mysql.c:44:23: error: my_config.h: No such file or directory

Getting Boost 1.68 working on Ubuntu 18.04

I want to use Boost 1.68 on Ubuntu 18.04. I noticed the Boost/libboost package available on Ubuntu is only 1.65, so I found a resource that suggested the following:
sudo apt-get remove libboost-all-dev
sudo add-apt-repository ppa:mhier/libboost-latest
sudo apt update
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However, after running this I no longer have the boost include files in my /usr/include directory. If I do sudo apt-get install libboost-all-dev, it seems I can only add 1.65.1
Is there a way I can get boost and the include files from 1.68 to run on Ubuntu 18.04?
I'm still relatively new to Linux/ubuntu so perhaps I'm overlooking something simple? Thanks for your assistance.
By installing libboost1.68 you only install Boost library files. Header files are at libboost1.68-dev:
sudo apt install libboost1.68-dev

Installing MAVROS package on raspberry pi

I'm trying to install a ROS package (MAVROS) on my raspberry pi 3, but i can't find a way to do it. Other packages worked well, but this one starts aggravating me...
Specs:
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Thanks!
First, add the ROS repository address to the source list.
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wget https://raw.githubusercontent.com/ros/rosdistro/master/ros.key -O - | sudo apt-key add -
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Installing MySQL-python for Django

I've just learned how to use virtualenv and I installed Django 1.4.5. I'm assuming that the virtualenv created a clean slate for me to work on so with the Django 1.4.5 installed, I copied all my previous files into the virtualenv environment.
I tried to run the server but I get an error saying "no module named MySQLdb". I think this means that I forgot to install MySQL-python. I tried to install it via
pip install MySQL-python
But I get this error
Downloading/unpacking MySQL-python
Running setup.py egg_info for package MySQL-python
The required version of distribute (>=0.6.28) is not available,
and can't be installed while this script is running. Please
install a more recent version first, using
'easy_install -U distribute'.
(Currently using distribute 0.6.24 (/home/bradford/Development/Django/django_1.4.5/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg))
Complete output from command python setup.py egg_info:
The required version of distribute (>=0.6.28) is not available,
and can't be installed while this script is running. Please
install a more recent version first, using
'easy_install -U distribute'.
(Currently using distribute 0.6.24 (/home/bradford/Development/Django/django_1.4.5/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg))
----------------------------------------
Command python setup.py egg_info failed with error code 2 in /home/bradford/Development/Django/django_1.4.5/build/MySQL-python
Not quite sure how to go about fixing this problem =/ any help much appreciated!
I recently had exactly this issue (just not in relation to Django). In my case I am developing on Ubuntu 12.04 using the default pip and distribute versions, which are basically a little out of date for MySQL-python.
Because you are working in an isolated virtualenv, you can safely follow the suggested instruction without affecting your Python installation.
So you can...
workon your_virtualenv #activate your virtualenv, you do use virtualenvwrapper, right?
easy_install -U distribute #update distribute on your virtualenv
pip install MySQL-python #install your package
If for some reason upgrading distribute is not an option, you could try installing an older version of MySQL-python as follows (you'd have to check this version is compatible with your version of Django):
pip install MySQL-python==x.y.z #where x.y.z is the version you want
Spent an hour looking through stackoverflow. Evntually found answer in the other question. This is what saved me:
sudo apt-get install libmysqlclient-dev
mysql_config goes with the package.
When doing in a virtualenv :
pip install MySQL-python
I got
EnvironmentError: mysql_config not found
To install mysql_config, as Artem Fedosov said, first install
sudo apt-get install libmysqlclient-dev
then everything works fine in virtualenv
MySQL driver for Python (mysql-python) needs libmysqlclient-dev. You can get it with:
sudo apt-get update
sudo apt-get install libmysqlclient-dev
If python-dev is not installed, you may have to install it too:
sudo apt-get install python-dev
Now you can install MySQL driver:
pip install mysql-python
Here is a more detailed documentation for MySQL in Django:
http://codex.themedelta.com/how-to-install-django-with-mysql-in-a-virtualenv-on-linux/
I had to do this:
pip install mysql-python
inside the virtualenv
The commands are always run in ubuntu:
easy_install -U distribute
later
sudo apt-get install libmysqlclient-dev
and finally
pip install MySQL-python
The suggested solutions didn't work out for me, because I still got compilation errors after running
`$ sudo apt-get install libmysqlclient-dev`
so I had to run
apt-get install python-dev
Then everything worked fine for me with
apt-get install python-dev
Try this:
Version Python 2.7
MySQL-python package, you should use either MySQL_python‑1.2.5‑cp27‑none‑win32.whl or
MySQL_python‑1.2.5‑cp27‑none‑win_amd64.whl depending on whether you have installed 32-bit or 64-bit Python.
pip install MySQL_python‑1.2.5‑cp27‑none‑win32.whl
if you are using mysqlclient package, then use
mysqlclient‑1.4.6‑cp27‑cp27m‑win32.whl or
mysqlclient‑1.4.6‑cp27‑cp27m‑win_amd64.whl
pip install mysqlclient‑1.4.6‑cp27‑cp27m‑win32.whl
https://www.lfd.uci.edu/~gohlke/pythonlibs/#mysqlclient