IOhannes m zmoelnig a écrit :
cyrille henry wrote:
hello,
i noticed that reading a 640x480 30fps .mov file with gem use 70% of my cpu. (2.13 centrino)
the same file read with vlc use less than 10%
is there anything i can do optimise movie in gem?
you could try to choose a different decoding library with [pix_film] with the 3 argument to the [open( message (e.g. try [open file.mov rgba 4( to first try to 4th available decoder) try to switch between aviplay and quicktime to see if you get anything better (and/or try to use ffmpeg (which youcurrently don't have installed)
ok, i was not able to fine a decoding lib that use less CPU. what lib should i install to enable ffmpeg?
furthermore, Gem really provides random access to each frame (when possible), which might give an extra penalty. it would be nice to be able to switch between random-access and sequential reading.
at least with "auto 1"
thanks for the answer Cyrille
mfg.asdr IOhannes
here is my ./configure output.
thanks Cyrille
Result: Target : Gem.pd_linux Objects : Base Controls Geos Manips Nongeos Particles Pixes ope nGL
Configuration: Compiler : g++ CXXFLAGS : -g -O2 -fPIC -freg-struct-return -O3 -falign-loops=16 -funroll-loops -ffast-math -mmmx : -I/usr/include/lqt -I/usr/include/lqt -I/usr/includ e/avifile-0.7 -I/usr/include/freetype2 INCLUDES : -I/usr/include/FTGL -I/usr/include/freetype2 DEFINES :
LIBS : -ldv -lmpeg -lmpeg3 -ljpeg -ltiff -lGLU -lGL -lXext - lXxf86vm -lXext -lX11 -ldl -lz -lm -L/usr/X11R6/lib -lpthread : -lGLU -lGL -lfreetype -lz -lftgl_pic -laviplay -L /usr/lib -lquicktime -lpthread -lm -lz -ldl -lquicktime -lpthread -lm -lz -ldl LDFLAGS : -shared -Wl,-export-dynamic -lGLU -lGL -lfreetype -lz -lftgl_pic : -L/usr/X11R6/lib
Strip : strip --strip-unneeded
Install path : /usr/local
pure-data: version : 0.40
used optional libraries:
font-rendering : FTGL
image-support use ImageMagick : no use TIFF : yes use JPEG : yes video-support use mpeg : yes use mpeg-3 : yes use QuickTime : yes use aviplay : yes use ffmpeg : no input-support use v4l : yes use ieee1394 : yes
misc using ARB-extensions : yes using NV-extensions : yes using reg-struct-ret : yes
Now run make ...
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