is it possible your camera is capturing at 29.996 fps instead of 30 and pix_video still is capturing them as 30 or something similar? is it a dv compressed camera? could you measure the frequency of the black/white frames?
J On Mon, Mar 22, 2010 at 1:54 AM, IOhannes m zmoelnig <zmoel...@iem.at>wrote: > On 2010-03-22 09:48, Matteo Sisti Sette wrote: > > IOHannes wrote: > > > > I tried [print]ing the output from the 7th outlet, whose function is not > > quite clear in the help patch: "list <newimage> <newfilm>". I guessed > > either <newimage> or <newfilm> _may_ be a boolean meaning whether the > > image is new (or the film, whatever it is), but even if I set the gemwin > > at 30 or 50 fps, I _always_ get "1 0", and I don't think my webcam > > captures 50 fps....... > > > > > that would have been the hint > > there are two possibilities why this is happening: > - there is a bug in Gem that doesn't mark the images as "old" (was this > on w32 or osx?) > - there is a "bug" in the image acquisition backend (DirectShow, > QuickTime,...) that just serves the same image twice as if it were new. > > > in the former case, we can fix it. > in the latter case we won't. > > of course you can use the "black" image to detect whether the same image > was captured twice. > > fgasdr > IOhannes > > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > -- Jaime E Oliver LR joliv...@ucsd.edu www.realidadvisual.org/jaimeoliver www-crca.ucsd.edu/ www.realidadvisual.org 858 750 0924 (cel) 858 202 1522 (home) 9168 Regents Rd. Apt. G La Jolla, CA 92037 USA
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