Just to give completion to this ---

a backtrace with gdb showed the seg fault was actually in bgav_read_video () from /usr/local/lib/libgmerlin_avdec.so.1. Apparently at some point I built that for some reason instead of using the shared library that came with ubuntu Natty. When I switched to the one in the Natty repository, everything worked fine. So the problem had nothing to do with Gem.

-John

On Wed, Feb 1, 2012 at 12:00 AM, John Harrison johnharrisonwsu@gmail.comwrote:

running gem 93.3 stable from git (yes I got it compile --- thx for the help) on ubuntu 11.04 (Natty) 64 bit.

Any video I try to load with [pix_film] causes a segmentation fault.

To recreate, I load examples -> 04.pix -> 05.film.pd and click on any of the example video files to load. Instantly I get a segmentation fault. If I choose homer.avi the terminal window shows: Pixelformat not specified for video frame

If I choose either of the other 2 videos I get

socket receive error: Connection reset by peer (104)

but no matter what it is followed immediately by the seg fault.

BTW when the patch is initially loaded the terminal window shows:

dylib loading file './gem_filmGMERLIN.so'! dylib loading file './gem_filmMPEG3.so'! dylib loading file './gem_filmQT4L.so'!

So...what should I try?

-John