I found what was causing me to have a segfault on gentoo when mythburn used jpeg2yuv. The problem was the jpeg-mmx library. If I symlink libjpeg-mmx so that it points to libjpeg, jpeg2yuv runs without crashing. I executed the following command in the /usr/lib folder: ln -s libjpeg.so.62 libjpeg-mmx.so.62 John