Mediacore error PIL – IOError: decoder jpeg not available

There is an error with mediacore community edition installation, when you try to upload a thumbnail to a video it shows Error 2038 and it can’t upload the image.
It is because PIL that comes with the mediacore installation didn’t find paths to the libjpeg and zlib libraries. To solve this you have to:

1. Download PIL 1.1.6
2. Delete mediacore_env/lib/python2.7/site-packages/PIL
3. Delete mediacore_env/lib/python2.7/site-packages/PIL.pth
4. Delete mediacore_env/lib/python2.7/site-packages/PIL-1.1.6-py2.7-linux-x86_64.egg
5. tar -xvzf Imaging-1.1.6.tar.gz
6. cd Imaging-1.1.6
7. python setup.py install
8. cd mediacore-community
9. paster serve –reload development.ini

Then It should work !

EnvironmentError: mysql_config not found

When you get this error, you just need to install libmysqlclient-dev. In ubuntu use:

sudo apt-get install libmysqlclient-dev

Install VLC on ubuntu 64 bits

Once you have installed ffmpeg and x264, in the way I posted before, it is time to install vlc.

tar xjvf vlc-1.1.11.tar.bz2
cd vlc-1.1.11/
./configure

If there is an error in the configure probably could be the libqt4-dev

sudo apt-get install libqt4-dev
./configure
make
sudo make install
ln -s /usr/local/lib/libvlc* /usr/lib/
ln -s /usr/local/lib/libx264.a /usr/lib/
ln -s /usr/local/lib/vlc /usr/lib/vlc

Once you have done this you can use vlc as a player, but if you would like to stream some multimedia content you will see an error like “stream_out_standard stream out error: no suitable sout mux module for `udp …” and “no sout mux module matched” and “main stream output error: stream chained failed for ‘standard {mux=” etc.

To solve this install libdvbpsi:

sudo apt-get install libdvbpsi6
sudo apt-get install libdvbpsi-dev

After that type:

./configure
make
make install

Finally you will have working vlc and ffmpeg together, without conflicts !

 

Force to mount an internal windows drive in ubuntu

Follow these steps:

1.- Open a terminal
2.- Type sudo /bin/bash
3.- Now, type mkdir /media/windisk
4.- To know which is the partition type: fdisk -l
5.- For ntfs drives type: mount -t ntfs-3g /dev/sda1 /media/windisk -o force
For fat32 drives type: mount -t vfat -o umask=000 /dev/sda1 /media/disk

Now you can access to your windows partition

Kivy – Multiple Layouts

I wonder how can I have several layouts and change between them using kv files in kivy. Actually I have the answer.

You have to create an ejercicio.kv file. You have to define the classes you are going to use for each layout such as.

#:kivy 1.0

<MyLabelWithBackground>:
       #definition

<Ejercicio>:
      #definition

<Layout1>:
      #definition

<Layout2>:
      #definition

Installing libx264 and ffmpeg on Ubuntu 11.10 – 64 bits

The main goal to compile and install libx264 and ffmpeg is try to make work vlc and ffmpeg at the same time.

First remove old installation

sudo apt-get remove ffmpeg x264 libx264-dev

Install all the packages you will need

sudo apt-get update

sudo apt-get install build-essential checkinstall git libfaac-dev libjack-jackd2-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libsdl1.2-dev libtheora-dev libva-dev libvdpau-dev libvorbis-dev libx11-dev libxfixes-dev libxvidcore-dev texi2html yasm zlib1g-dev

Install X264

Install x264 packages getting the source code using git

Install git with  –>  sudo apt-get install git

git clone git://git.videolan.org/x264
cd x264/
./configure –enable-shared
make
sudo make install

Install ffmpeg

Install ffmpeg packages getting the source code using git

git clone git://git.videolan.org/ffmpeg
cd ffmpeg/
./configure –enable-libopencore-amrnb –enable-libopencore-amrwb –enable-libfaac –enable-libmp3lame –enable-libtheora –enable-libvorbis –enable-libx264 –enable-libxvid –disable-ffplay –enable-shared –enable-gpl –enable-postproc –enable-version3 –enable-nonfree –enable-avfilter –enable-pthreads
make
sudo make install

Configure global variables:

export LD_LIBRARY_PATH=/usr/local/lib
sudo gedit /etc/ld.so.conf
//add this –> /usr/local/lib at the end of the file
sudo ldconfig
hash x264 ffmpeg ffplay ffprobe or
hash x264 ffmpeg ffprobe

Kivy – Label with background

Kivy is a framework for develop multitouch applications, I started to use pyMT, but pyMT evolved into Kivy.

Adding a background to a label is not possible using the common functions in documentation.

A possible solution by @Mathieu Virbel could be:

class MyLabelWithBackground(Label):

  pass

And put in a kv that you load somewhere:

<MyLabelWithBackground>:

  canvas.before:

    Color:

      rgb: 1, 0, 0 # your color here

    Rectangle:

      pos: self.pos

      size: self.size