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https://github.com/miohtama/slideshow9000

Because I can
https://github.com/miohtama/slideshow9000

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Because I can

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README 

        
Bootstrapping

-----------------



* Create virtualenv and install Pyramid



::

    

    easy_install virtualenv

    virtualenv pyramid

    source pyramid/bin/activate

    easy_install Pyramid==1.0

    

* Run project



::



    source pyramid/bin/activate

    cd slideshow

    python setup.py develop

    paste server development.ini

    

    

Browser to the development server



::



    http://127.0.0.1:6543/



Production run

---------------------------------



Log in as ``slideshow`` user and start WSGI server through screen::



    script /dev/null # enable screen under sudo

    screen -x

    source ~/pyramid/bin/activate

    paster serve production.ini



Install Echo Nest Remix 

-------------------------------



Echo Nest Remix API works by uploading data to Echo Nest servers for audio analysis.

First MP3 is decoded with ffmpeg and then raw data is uploaded(?).



Needed for beat analysis. You need have ffmpeg development files installed::



    # TODO - don't know what do here 

    # Try Medibuntu repos?

    

Then install Echo Nest remix API:    



::



    source pyramid/bin/activate

    svn checkout http://echo-nest-remix.googlecode.com/svn/trunk/ echo-nest-remix

    cd echo-nest-remix

    # Apparently this puts some crap to /usr/local and /usr/local/bin 

    sudo python setup.py install

    sudo ln -s `which ffmpeg` /usr/local/bin/en-ffmpeg



Install Selenium

--------------------------------------



Selenium is used for frame recording by remote controlling a Firefox browser which connects to localhost running Pyramid.



::



    source pyramid/bin/activate    

    wget http://selenium.googlecode.com/files/selenium-server-standalone-2.0rc2.jar

    easy_install selenium

    

Install PIL

--------------



::



    source pyramid/bin/activate    

    easy_install http://dist.repoze.org/PIL-1.1.6.tar.gz    

    

Recording a video

-----------------------------------------



Run Selenium in a recording mode.



This will 



* Spawn Pyramid server on localhost:6543



* Open a Selenium driven Firefox on /recorder on the server



* Control the execution of the Javascript on the page, make yield each animation frame individually



* Encode frames to base64 PNG data URIs



* Feed frames from Firefox to Python process through Selenium (using strings)



* Decode frames in Python



* Save decoded frames as RGB raw data to a stream (/tmp/data.raw)



::



    source pyramid/bin/activate

    python slideshow/recoder.py /tmp/data.raw # Will start Firefox + Pyramid  and output frame data to this file

       



Then you can encode this::



    gst-launch-0.10 filesrc location=../work/mixsnap/foo.raw blocksize=918528 ! \

        'video/x-raw-rgb,bpp=24,endianness=4321,depth=24,red_mask=16711680,green_mask=65280,blue_mask=255,width=736,height=416,framerate=30/1' !\

         ffmpegcolorspace ! videorate ! x264enc profile=baseline ! mux. \

         filesrc location=josh.ogg ! decodebin ! audiorate ! audioconvert ! faac ! mux. \

         mp4mux name=mux ! filesink location=foo.mp4



Music

-------



Out of the box music CC Licensed 



* http://www.jamendo.com/en/artist/Emerald_Park



* http://www.jamendo.com/en/artist/manguer



Adding your own songs

==========================



Drop in your MP3 files in ``music`` folder.



You need Echo Nest API key



* http://developer.echonest.com/



Rerun ``beatme.py`` to generate beat data as JSON::



    # NOT A REAL KEY

    export ECHO_NEST_API_KEY=DH2I0GRG9VSVPDH 

    python beatme.py    



Videos

----------



* http://www.motionshare.com/free-videos/viewvideo/81/ambient-colour-backgrounds/enthroned-forever-slide-sd/Page-1.html



Sources

--------



* http://oksoclap.com/canvasoptimizations



* http://echo-nest-remix.googlecode.com/svn/trunk/apidocs/index.html



* http://lindsay.at/work/remix/overview.html



* http://code.google.com/p/echo-nest-remix/



* https://github.com/jquery/jquery-mobile



Tools

-------



* http://www.online-convert.com/result/13bdb358a38f203f74217281f9711a1d



* ffmpeg2theora http://v2v.cc/~j/ffmpeg2theora/download.html



* GStreamer: install these:



    gstreamer0.10-ffmpeg

    gstreamer0.10-fluendo-mp3

    gstreamer0.10-gnonlin

    gstreamer0.10-nice

    gstreamer0.10-plugins-bad

    gstreamer0.10-plugins-bad-multi

    gstreamer0.10-plugins-base

    gstreamer0.10-plugins-base-apps

    gstreamer0.10-plugins-good

    gstreamer0.10-plugins-ugly

    gstreamer0.10-plugins-ugly-mult

    gstreamer0.10-pulseaudio

    gstreamer0.10-tools

    gstreamer0.10-x