[PD] GEM quirky-ness on OS X

Pall Thayer pallthay at gmail.com
Sun Jan 8 01:48:07 CET 2012

Hi Chris,

Thanks for the suggestion but that didn't work.

Some other weird issues are that my ".mov" file worked fine on linux
but not at all on OS X. The only thing that would play it was VLC so I
used that to transcode it and was able to get it working (albeit with
the flashing) in other formats. But I noticed that when the frame
motion was backwards, it would cause clicking in the audio. So I ended
up transcoding it to jpeg and that got rid of the clicking but I still
get the flashing.

Any more suggestions?


On Sat, Jan 7, 2012 at 7:26 PM, chris clepper <cgclepper at gmail.com> wrote:
> Are you doing any pix_ processing?  Sometimes still frames get double
> processed causing unintended results.  It has to do with Quicktime not
> always giving the right indication that a new frame was delivered.  Throw a
> pix_separator in the chain and see if that does anything.
> On Sat, Jan 7, 2012 at 7:00 PM, Pall Thayer <pallthay at gmail.com> wrote:
>> Hi list.
>> I'm working on a piece that's most likely going to be shown on a Macs
>> running OS X and I'm running into a strange issue with GEM. The piece
>> involves a short video clip that moves back and forth amongst the
>> frames. As long as it's moving between frames, everything is fine. But
>> as soon as it stops somewhere, it starts alternating between the
>> correct colors and their opposites causing it to flash. This doesn't
>> happen on linux, only on OS X. Anyone know why this is happening and
>> how I can fix it? I've tried a variety of video formats but nothing
>> seems to make a difference. Also, when it flashes to the opposite
>> colors, it looks like the resolution changes. Weird.
>> I would greatly appreciate any and all tips and suggestions.
>> Pall
>> --
>> *****************************
>> Pall Thayer
>> artist
>> http://pallthayer.dyndns.org
>> *****************************
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Pall Thayer

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