Hi Claude,
Thanks for the background info.
The Maciunas film is great but I think your work is sufficiently
different :-)
The idea of creating a customizable DVD is very cool. I can imagine
allowing users to control parameters in audio/video, etc. and create
something fun.
As for the steps that you took - I wonder if you could please explain
saving the ppm files in Gridflow.
I have looked at
http://gridflow.ca/latest/doc/format.html
and just couldn't figure it out.
I was trying to do something similar with jpegs and
sending messages like:
[open jpeg testfile(
and
[format jpeg(
to an
[#out]
object but had no luck. I'm sure I'm just being stupid but any help would be appreciated!
I know that saving the files will slow things down considerably but
would still like to know how it's done :-)
Thank and best, p
On Aug 23, 2006, at 3:51 PM, Claude Heiland-Allen wrote:
Paris Treantafeles wrote:
Hi Claude, I finally have downloaded and watched your Soft Rock EP and wow...
great stuff! I may be biased because it's quite similar to some of my own work
- even without the GridFlow abstraction that you shared :-)
Thanks - a friend of mine showed me a video made 40 years ago that
looks similar in places:George Maciunas - Artype (1966), 29 mb http://ubu.wfmu.org/video/fluxfilm_20_maciunas.mpg http://www.ubu.com/film/fluxfilm.html
I'll have to try harder to come up with something original!
If you don't mind can you tell us how you captured the visuals? They look very good - were you writing to disk (say from Gridflow
to Gem?) or sending video out to another machine to capture.I saved lossless ppm images direct from GridFlow. To avoid using
an excessive amount of disk space, I used a named pipe created with
mkfifo to send these images directly to mpeg2enc (part of
mjpegtools package, I believe).Needless to say it works slower than realtime, I think it rendered
at about 4 frames per second on my machine, including the time
taken to encode the video to MPEG2 format.I'm working on a build system that would enable you to create your
own custom Soft Rock DVD, hopefully I'll get it finished and
debugged before Christmas. It will need a fair amount of
intermediate disk space (maybe 5-10 GB) because the following
deadlocks after a few frames:/ writesf~ WAV pipe -> toolame encoder \ / \Pd --< >-- mplex multiplexer \ / \ GridFlow PPM pipe -> mpeg2enc encoder /
I believe the root cause of the deadlock is either or both of
writesf~ and GridFlow using blocking I/O rather than non-blocking I/ O, from what I have read mjpegtools is written to play nice with
fifo's.The intent is to generate a sequence of unique (but similar) DVDs
from around 1 MB of pd/bash/make code and a small amount of seed data.Thanks for sharing! p
Thanks for the feedback!
Claude
http://claudiusmaximus.goto10.org
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