[PD] Re: GEM vs Jitter a newbie request for opinions (newbie sez thanks)
chris clepper
cgc at humboldtblvd.com
Sat Oct 25 20:10:09 CEST 2003
> > periodically save it to a file(s)
>
>is pix_write working in OSX yet? Are you talking about saving a chunk of
>video, or individual frames? I never tried using pix_multiimage to load an
>array of images files saved with pix_write the performance may not be all
>that great.
pix_write works in OSX. By default it writes out single high-quality
photo-jpeg files into an image sequence which can be loaded into the
QTPlayer.app and saved as a .mov file. The one caveat at the moment:
using pix_write with pix_snap results in the images being flipped on
the y axis. This is because QT and GL disagree on where to begin
drawing pixmaps - QT starts in the top left, GL in the bottom left.
I can add a flip function which will take care of this internally but
it will affect speed somewhat. Currently I can record 640x480 scenes
at 30fps (1ghz powerbook) using pix_snap + pix_write, but that might
not be possible with the flip function in place. I will also talk to
some people at Apple to see if there is a better solution to this.
It also wouldn't be too much of a chore to code up a QT movie
recording object, but the soonest I could get to it would be next
weekend.
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