[Sugar-devel] mp3 etc.

[Tony Anderson]

Hi,

De facto, users can install the codecs as I understand it. The problem 
is distribution.

The problem is not simple.

The following files are needed:

These two decode mp3

libgstmad.so
libmad.so

These two decode AAC (the audio stream in mp4 video)

libgstfaad.so
libfaad.so


This handles the video.

gstreamer-ffmpeg-0.10.13-8.fc18.i686.rpm

The rpm is available freely and handles webm. This is one of the two 
formats that IIAB used for the Khan Academy videos. Jukebox should 
probably include webm support out of the box.

The other four are required to handle mp3 and mp4 (audio). They can be 
obtained by installing the 'gstreamer ugly' rpm and then copying from
/usr/lib and /usr/lib/gstreamer-0.10.

Including mime-types for these in the Jukebox activity even though the 
codecs are not installed has no serious consequences. The Journal will 
show an option to start a file but then simply doesn't play the file.

However, a deployment can unzip the xo file, edit the mime-types, zip 
(or use setup.py) the xo, and install from the modified xo file.

Tony



On 08/24/2013 02:17 AM, Gonzalo Odiard wrote:
> Part of the problem is legal.
> OLPC or Fedora can't distribute legally software to play mp3 without
> pay royalties. But in many countries in the world, the software patents
> are not applicable, then, maybe you can install the software without
> problem.
> In the XO-4, the payment is already done, then is a issue solved,
> but not in the older models.
>
> Gonzalo
>