Archive for the ‘installing software’ Category

Public Media Systems Workshop, Wednesdays 7-9pm in November, Cambrij

October 30, 2011

An informal workshop and working group around media systems.
What will happen?
We will discuss media systems. Things like television, internet, magazines, blogs, etc. We will view them with several lens including consumption/production, parallel/serial, horizontal/vertical, local/global, centralized/distributed, community/personal. We will then discuss small actions and cover how any new or old computer can become a local information server, a shared public appliance. Using free software, we will go over several ways you can accomplish this. You can do some physical building of a structures to house your device and we can talk about local venues that might house your unit as well. From cafes, music venues, to occupy boston.

Things you can learn to make if you want:
A videobooth, a public timelapse server, command line video remixing, computer timelapse self surveillance, youtube upload scripts, a public text box, and lots of good low level stuff about shell scripting and installing linux, systems thinking, etc.

What you should bring:
Your current computer or an old computer. Any old pc(win2k+) or mac (osx+) can probably be turned into a public information appliance. So bring one of those if you have it.
If you have an old webcam, bring that. If you have an old point and shoot camera from this list, please bring that:

Where: Industry Lab coworking space. 288 Norfolk St, 4th Floor. Near Inman Sq, Cambrij.
When: 4 Wednesdays in November, 7-9pm. Nov 9,16,23,30

RSVP to dan:

If you are interested but can’t make the time, you can still email and maybe some additional one-off sessions will be held at other times.

All Asia Timelapse Twvee

February 18, 2011

Just installed a new timelapse twvee set at All Asia Cafe in Cambridge MA.
Each day it makes a audio and video timelapse movie.

youtube channel=

The scripts are similar to those used in the Timelapse memory server. It also has an audio component which is similar to the methods described in this post.

The machine is an old hp pc(~$140 from craigslist) with ubuntu 10.10 (free if you don’t count internet to download and cd to burn it on) on it. Webcam is a playstation 2 eyecam(~$40). I spent some money on lumber to build a box around it but mostly used scraps.


The machine also uses the youtube uploader stuff described in this post.

A twvee(twee-vee) set is sort of like a tv set except that it’s 2 directional. Maybe it should be a 2V set?

using motion now to capture frames. other incomplete notes here

a related experiment from a machine shop. some more theory too.

installing ffmeg on mac os x

July 27, 2009

i’m on a mac mini. 1.83 intel core duo. 1 gb ram.

os x 10.5.4.

my notes on ffmeg install following this article  —

 tar xvzf lame-3.97.tar.gz

(this line didn’t work for me because mc os x automatically unzipped for me) so instead i need to get rid of the z.

tar xvf lame-3.98-2.tar

then a couple lines down there is a 


this didn’t work for me either. i got

… configure: error: no acceptable C compiler found in $PATH See `config.log’ for more details.

now i’m downloading xcode and developer tools. i’m assuming this will cover the c compiler part.

ok. this block works now. 



sudo make install 


same issue with tar after downloading. i could get the command line download line to work. so i went to download faad from sourceforge. and then used this tar line

tar xvf faad2-2.7.tar

then i ran ./configure, make,and make install.

now back to ffmpeg. mkdir. cd. svn.

“Checked out revision 19521.”

long configure line. make (this is a long one). sudo make install.

now i noticed the additional config flags for the aac stuff. so i go back and run config again.



 ./configure –enable-libmp3lame –enable-shared  –disable-mmx –enable-libfaac –enable-libfaad

libfaad2 is gpl and –enable-gpl is not specified.

If you think configure made a mistake, make sure you are using the latest version from SVN.  If the latest version fails, report the problem to the mailing list or IRC #ffmpeg on Include the log file “config.err” produced by configure as this will help solving the problem.

not sure what this means but i’m moving on…
so here i am. first try.
$ ffmpeg -i codemovie.flv
FFmpeg version SVN-r19521, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: –enable-libmp3lame –enable-shared –disable-mmx
  libavutil     50. 3. 0 / 50. 3. 0
  libavcodec    52.32. 0 / 52.32. 0
  libavformat   52.36. 0 / 52.36. 0
  libavdevice   52. 2. 0 / 52. 2. 0
  libswscale     0. 7. 1 /  0. 7. 1
  built on Jul 27 2009 15:15:19, gcc: 4.0.1 (Apple Inc. build 5493) Unknown format

tar xvf faad2-2.7.tar

it can’t understand the native .mov files written by photobooth. that’s all for now. back to this at a later date.