in which package debian is ffmpeg-dev ?

[Gerard Robin <g.robin3@free.fr>]

Hello,
on my laptop acer aspire 5102 wlmi I installed the driver m560x
successfully.
(http://m560x-driver.svn.sourceforge.net/viewvc/m560x-driver.tar.gz?view=tar)
But when I installed livecam 
(http://livecam.svn.sourceforge.net/viewvc/livecam.tar.gz?view=tar)
./configure failed:
----------------------------8<-------------------------------
checking for jpeglib.h... yes
checking ffmpeg/avcodec.h usability... no
checking ffmpeg/avcodec.h presence... no
checking for ffmpeg/avcodec.h... no
configure: error: ffmpeg-devel is required to build LiveCam

My problem is that the package ffmpeg-dev doesn't exist in debian.
I would like to know What package debian contains ffmpeg-dev.

tia
--
Gérard