www.anatol.biz bai.tu/bai.php Last modified: April 26 2013 20:10:42. requested by CCBot/2.0 (http://commoncrawl.org/faq/) @ 188.8.131.52:60502
"bai.tu" is a patch framework in puredata to manage sound and video machines for a show.(lighting control over DMX512 is under way)
the main idea is to be able to manage dedicated machines for each task and/or backup systems in frame accurate syncronization
for that purpose sound and video processing is done by seperate modules.
for the moment only *.wav sources in stereo format are accepted as sound sources, but you could have several stereo sources running in sync to build a multichannel performance.
bit depth and sample rate depend on your hardware configuration.
neither bai.tu or puredata perform any checks on your system config, you will have to do that by yourself.
so if you take, for example, a video stream coming from a dvd, split it into video and audio, but the machine running your audio is configured to run at 41kHz samplerate you will get weird results in terms of sync: the sound coming from the dvd has a 48kHz samplerate but will be played back at 41kHz.
video has been proven to be stable with the *.avi-container as a source using the pd-extended platform.(without compression and using a plane DV codec!)
if you want to use other puredata releases you will need the GEM libraries for video manipulation.
the number of streams and the complexity of manipulations depend mainly on your hardware
"bai.tu" is ment to be completely crossplatform and has been tested on Linux (mainly on Debian based systems), MacOS X and Windows
of course i would advise to stay away from Windows platforms for stability, performance and sanity reasons!
like allmost everything else on this site, this stuff is open source and copyleft!
do whatever you want with it as long as you're having fun!
you don't really need an install to use this framework.
all you need to do is to extract the files to any place on your harddrive that pleases you and add that location to pd's library path's
if you're updating from a previous version you might just overwrite the files of the old version (please keep in mind that a backup is always a good idea).
PLEASE check and re-check your setups after any updates, and remember: if it's working fine, don't fix it!
documentation is, for the moment, so poor that it's really more like none existing.
there is a patch in the "trunk" directory called "patch.pd" where you can find most of the modules in use and, maybe, get an idea of how they are ment to be managed.
all video objects and containers have some kind of remote control.
it is usefull to keep track of your network connections and ports when using multiple machines: any overlapping ports and/or adresses will cause absolute mayhem.
the cue system:
every show, technically speaking, has some kind of a cue structure the operator or technician runs through step by step
"bai.tu" is based on exactly that principle
there are two cue "generators" or counters: [sequence] and [sequence_sync #acceptingport]
the first is used for local cue management (cues might be triggered remotely) and has 20 direct outlets (bang)
you don't need to use any of those but it might be easier for some to see the physical connections
additionally every triggered cue sends a bang to its respective receiver, for example [receive cue23]
cues do not have, for the moment, any description or text associated.
[sequence_sync #port] works in exactly the same way locally
except that you can syncronize your cues thruout a network of machines
with the parameter "#port" you define on wich port your machine should be listening for connections and cue triggers and with the last inlet on the right you can tell it to connect to other machines with a [connect ip.add.re.ss #port( message.
you should always create a kind of feed back connection chain with the last machine in your connection chain connecting back to the first
that way all machines in the chain will verify that they're all in sync.
both modules accept keyboard input:
"bai.tu" version 0.9.51 rc2 right-click and choose "save as ..."
"bai.tu" version 0.9.52 rc2 right-click and choose "save as ..."
you can also get it from github.com
and over GIT: "git://github.com/anatolw/bai.tu.git"