mjpegtools is used by some multimedia packages such as transcode, kipi-plugins and so on... On x86 plateform with "mmx" USE flag, jpeg-mmx is a dependancy of mjpegtools. Masking jpeg-mmx for treecleaner breaks this dependancy. Please, remove this (optional) dependancy in the mjpegtools ebuild ! A workaround is currently to disable mmx USE flag for mjpegtools package. Regards
# pquery --raw --revdep media-libs/jpeg-mmx media-libs/libmovtar-0.1.3-r1 media-video/mjpegtools-1.8.0-r1 media-video/motion-3.2.7
it's all fixed in the tree
*** Bug 154129 has been marked as a duplicate of this bug. ***
*** Bug 154199 has been marked as a duplicate of this bug. ***