[PD] pd extended build environment

Joseph Barrows jjbarrows at artwww.net
Sat Apr 19 05:48:32 CEST 2008

> >        use ffmpeg           : no (forced)
> > hmm, maybe i should compile it myself then
> probably not. ffmpeg support in Gem is not something i would consider
> stable. (the API is changing so fast...)

i'll leave it out - stability is even more important than reading wide range
of video formats (i can transcode video, having PD vanish in the middle of a
performance is very bad form - happened 4 times last night)  my system
reports the standard
  pix_film:: quicktime support
 pix_film:: libmpeg3 support
 pix_film:: libaviplay support

though i think i do want ffmpeg (i think someone mentioned it would enable
support for .flv files)

i see, does it help if you create a table-of-contents first?
> iirc, there is a tool mpeg3toc which will create TOC from an mpeg-file
> which can then be fed into [pix_film] to allow frame accurate accessing
> of mpeg-files (and probably the exact number of frames in the file).
> otoh, it seems that this has stopped working some time ago...
> probably you should just check.

i seem to remember using the TOC when i first started using gem, but yes, it
did stop working and i havent checked for some time.

> gem still causes PD to
> > completely die when given a video file it doesn't like.
> which is not fine.
> i suspect that it is libmpeg1 (if it is really used; check out which
> APIs are really supported when creating the first [pix_film]) - this
> library is highly unstable; it's only in the code in case libmpeg3 is
> missing and you still want to decode mpeg-files.

thanks, i'll try removing mpeg (guess i'll have to compile my own, oh well,
since i'm going to do that any ideas how i would go about making Gem use
opengl 1.5 instead of 2 (which i think it does now), i want to  use it with
chromium, which insists on opengl 1.5

the crashing is more random than i thought (sometimes happens with video
files that worked a few minutes earlier)
(some of the crashes were due to one of my subpatches, that i removed last
night, but i think that was the part causing the GUI lockups - it was giving
a lot of "stack overflow" messages)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20080419/cf567863/attachment.htm>

More information about the Pd-list mailing list