Archive for March, 2008

-image-Installing ffmpeg on OS X

This is a work in progress for installing ffmpeg on OSX by a custom compile

This is another thing that I have needed to do and decided to put what I am doing in a blog post, I might need it in the future or it might be helpful for others.

So firstly download LAME – this is needed for supporting MP3 audio files, such as those in FLV and also for vorbis support. LAME src can be located on sourceforge.

Unarchive the file (lame-3.98b6 at the time of writing )

cd lame-3.98b6
./configure --with-vorbis
make
sudo make install

The first time I did this I noticed a problem running make so I “make clean” and then went through the process again.

Next up we want support for AAC audio, and you can get packages called FAAD2 and FAAC from www.audiocoding.com/downloads.html for these and then unarchive them ( FAAD 2.6.1 and FAAC 1.26 at the time of writing).

cd faad2
autoreconf -vif
./configure --without-bmp --without-xmms --without-drm --without-mpeg4ip
make
sudo make install

Then faac

cd faac
./bootstrap
./configure --with-libmp4v2
make
sudo make install

x264 ( http://www.videolan.org/developers/x264.html )

cd x264
./configure --enable-pthread --enable-pic
make
make install

liba52

wget http://liba52.sourceforge.net/files/a52dec-snapshot.tar.gz
tar -xzvf a52dec-snapshot.tar.gz
cd a52dec-0.7.5-cvs/
./configure
./configure --enable-libmp3lame --enable-x264 --enable-liba52 --enable-gpl

And for amr_wb and amr_nb go into their directories and do the following:

./configure
make clean
make -j2 > /dev/null
sudo make install

Basically the -j2 switch is for enabling dual cores when compiling.

Now we get around to compiling ffmpeg itself:

./configure --enable-shared --disable-mmx --enable-libmp3lame --enable-libamr-wb --enable-libamr-nb --enable-nonfree --disable-vhook
make clean
make -j2 > /dev/null
sudo make install

And that should be it though I am currently trying this configuration and it seems to work well:

./configure --enable-shared --disable-mmx --enable-libmp3lame --enable-libamr-wb --enable-libamr-nb --enable-nonfree --enable-libx264 --enable-libfaad --enable-gpl --disable-vhook

Posted on March 25th, 2008 by timc3 in Computing, OSX | 1 Comment »

-image-Django and URLS naming

Django URLs naming can be a pain sometimes, unless it is just me but an easy way to debug is to use Django’s shell and import urlresolvers:

python manage.py shell

>> from django.core.urlresolvers import reverse
>> reverse('nameofurl')

If there are arguments in the URLS field (for instance passing in the slug):

 >> reverse('nameofurl', 'slug') [/sourcecode]

Then it should resolve the name to the URL path needed. If it doesn’t, well something is wrong. We got a weird Traceback when using Python 2.5 though:

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/Library/Python/2.5/site-packages/django/core/urlresolvers.py", line 297, in reverse
    return iri_to_uri(u'/' + get_resolver(urlconf).reverse(viewname, *args, **kwargs))
  File "/Library/Python/2.5/site-packages/django/core/urlresolvers.py", line 282, in reverse
    if lookup_view in self.reverse_dict:
  File "/Library/Python/2.5/site-packages/django/core/urlresolvers.py", line 221, in _get_reverse_dict
    self._reverse_dict[pattern.callback] = (pattern,)
  File "/Library/Python/2.5/site-packages/django/core/urlresolvers.py", line 178, in _get_callback
    self._callback = get_callable(self._callback_str)
  File "/Users/azimi/Code/Python/Django/django-trunk/django/utils/functional.py", line 130, in wrapper
    result = func(*args)
  File "/Library/Python/2.5/site-packages/django/core/urlresolvers.py", line 47, in get_callable
    lookup_view = getattr(__import__(mod_name, {}, {}, ['']), func_name)
  File "/website/xmlrpc.py", line 8, in </module><module>
    dispatcher = SimpleXMLRPCDispatcher() # Python 2.4
TypeError: __init__() takes exactly 3 arguments (1 given)
>>> reverse('homepage')
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/Library/Python/2.5/site-packages/django/core/urlresolvers.py", line 297, in reverse
    return iri_to_uri(u'/' + get_resolver(urlconf).reverse(viewname, *args, **kwargs))
  File "/Library/Python/2.5/site-packages/django/core/urlresolvers.py", line 284, in reverse
    raise NoReverseMatch
NoReverseMatch
</module></console></module></console>

Looks like something is broken in support for python 2.5 on OS X with django, but I wonder if it is just us thats found this.

Posted on March 13th, 2008 by timc3 in Computing, Websites | Add your Comments »