schon wieder ffmpeg fehler

ACCEPT_KEYWORDS='~x86' emerge =media-video/ffmpeg-0.4.8
Calculating dependencies ...done!
>>> emerge (1 of 1) media-video/ffmpeg-0.4.8 to /
>>> md5 src_uri ;-) ffmpeg-0.4.8.tar.gz
>>> Unpacking source...
>>> Unpacking ffmpeg-0.4.8.tar.gz to /var/tmp/portage/ffmpeg-0.4.8/work


 * Cannot find $EPATCH_SOURCE!  Value for $EPATCH_SOURCE is:
 *
 *   /usr/portage/media-video/ffmpeg/files/ffmpeg-0.4.8.diff
 *   ( ffmpeg-0.4.8.diff )




!!! ERROR: media-video/ffmpeg-0.4.8 failed.
!!! Function epatch, Line 256, Exitcode 0
!!! Cannot find $EPATCH_SOURCE!
!!! If you need support, post the topmost build error, NOT this status message.