[root@localhost opencv-1.1.0]# ./configure --prefix=/opt/opencv --enable-apps --enable-shared --with-ffmpeg  --with-gnu-ld --with-x --without-quicktime CXXFLAGS=-fno-strict-aliasing
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking target system type... i686-pc-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make sets $(MAKE)... (cached) yes
checking for g++... g++
checking for C++ compiler default output file name... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for style of include used by make... GNU
checking dependency style of g++... gcc3
checking for gcc... gcc
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking dependency style of gcc... gcc3
checking how to run the C preprocessor... gcc -E
checking for a sed that does not truncate output... /bin/sed
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for /usr/bin/ld option to reload object files... -r
checking for BSD-compatible nm... /usr/bin/nm -B
checking whether ln -s works... yes
checking how to recognize dependent libraries... pass_all
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking dlfcn.h usability... yes
checking dlfcn.h presence... yes
checking for dlfcn.h... yes
checking how to run the C++ preprocessor... g++ -E
checking for g77... no
checking for xlf... no
checking for f77... no
checking for frt... no
checking for pgf77... no
checking for cf77... no
checking for fort77... no
checking for fl32... no
checking for af77... no
checking for xlf90... no
checking for f90... no
checking for pgf90... no
checking for pghpf... no
checking for epcf90... no
checking for gfortran... no
checking for g95... no
checking for xlf95... no
checking for f95... no
checking for fort... no
checking for ifort... no
checking for ifc... no
checking for efc... no
checking for pgf95... no
checking for lf95... no
checking for ftn... no
checking whether we are using the GNU Fortran 77 compiler... no
checking whether  accepts -g... no
checking the maximum length of command line arguments... 98304
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for objdir... .libs
checking for ar... ar
checking for ranlib... ranlib
checking for strip... strip
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC
checking if gcc PIC flag -fPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking whether the gcc linker (/usr/bin/ld) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
configure: creating libtool
appending configuration tag "CXX" to libtool
checking for ld used by g++... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC
checking if g++ PIC flag -fPIC works... yes
checking if g++ static flag -static works... yes
checking if g++ supports -c -o file.o... yes
checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... GNU/Linux ld.so
(cached) (cached) checking how to hardcode library paths into programs... immediate
appending configuration tag "F77" to libtool
checking for OpenMP support... no
checking whether to build debug version (no optimization)... no
configure: TARGET=i686-pc-linux-gnu 
checking for pow in -lm... yes
checking for dlopen in -ldl... yes
checking for pthread_create in -lpthread... yes
checking whether byte ordering is bigendian... no
checking for working alloca.h... yes
checking for alloca... yes
checking malloc.h usability... yes
checking malloc.h presence... yes
checking for malloc.h... yes
checking assert.h usability... yes
checking assert.h presence... yes
checking for assert.h... yes
checking for lrint... yes
checking Carbon/Carbon.h usability... no
checking Carbon/Carbon.h presence... no
checking for Carbon/Carbon.h... no
checking for pkg-config... /usr/bin/pkg-config
checking for "gtk+-2.0 gdk-pixbuf-2.0"... yes
checking GTK_CFLAGS... -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12  
checking GTK_LIBS... -L/lib -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lpangocairo-1.0 -lpango-1.0 -lcairo -lgdk_pixbuf-2.0 -lm -lgobject-2.0 -lgmodule-2.0 -ldl -lglib-2.0  
checking for "gthread-2.0"... yes
checking GTHREAD_CFLAGS... -pthread -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include  
checking GTHREAD_LIBS... -pthread -L/lib -lgthread-2.0 -lglib-2.0  
checking ffmpeg/avcodec.h usability... no
checking ffmpeg/avcodec.h presence... no
checking for ffmpeg/avcodec.h... no
checking ffmpeg/swscale.h usability... no
checking ffmpeg/swscale.h presence... no
checking for ffmpeg/swscale.h... no
checking libraw1394/raw1394.h usability... no
checking libraw1394/raw1394.h presence... no
checking for libraw1394/raw1394.h... no
checking linux/videodev.h usability... yes
checking linux/videodev.h presence... yes
checking for linux/videodev.h... yes
checking for linux/videodev2.h... yes
checking ApplicationServices/ApplicationServices.h usability... no
checking ApplicationServices/ApplicationServices.h presence... no
checking for ApplicationServices/ApplicationServices.h... no
checking jpeglib.h usability... no
checking jpeglib.h presence... no
checking for jpeglib.h... no
checking zlib.h usability... yes
checking zlib.h presence... yes
checking for zlib.h... yes
checking for gzopen in -lz... yes
checking png.h usability... yes
checking png.h presence... yes
checking for png.h... yes
checking libpng/png.h usability... no
checking libpng/png.h presence... no
checking for libpng/png.h... no
checking for png_read_image in -lpng12... yes
checking for png_get_valid... yes
checking for png_set_tRNS_to_alpha... yes
checking tiff.h usability... no
checking tiff.h presence... no
checking for tiff.h... no
checking jasper/jasper.h usability... no
checking jasper/jasper.h presence... no
checking for jasper/jasper.h... no
checking ImfCRgbaFile.h usability... no
checking ImfCRgbaFile.h presence... no
checking for ImfCRgbaFile.h... no
configure: Checking for necessary tools to build python wrappers
checking for python... /usr/bin/python
checking for python version... 2.4
checking for python platform... linux2
checking for python script directory... ${prefix}/lib/python2.4/site-packages
checking for python extension module directory... ${exec_prefix}/lib/python2.4/site-packages
configure: PYTHON_CSPEC=-fPIC -I/usr/include/python2.4
configure: PYTHON_LSPEC=-L/usr/kerberos/lib -L/usr/lib/python2.4/config -lm -lpthread -ldl  -lutil -lpython2.4 -Xlinker -export-dynamic
checking Python.h usability... no
checking Python.h presence... no
checking for Python.h... no
configure: WARNING: Python headers not found, disabling python wrappers
configure: creating ./config.status
config.status: creating Makefile
config.status: creating opencv.pc
config.status: creating opencv.spec
config.status: creating docs/Makefile
config.status: creating data/Makefile
config.status: creating cxcore/Makefile
config.status: creating cxcore/include/Makefile
config.status: creating cxcore/src/Makefile
config.status: creating cv/Makefile
config.status: creating cv/include/Makefile
config.status: creating cv/src/Makefile
config.status: creating cvaux/Makefile
config.status: creating cvaux/include/Makefile
config.status: creating cvaux/src/Makefile
config.status: creating ml/Makefile
config.status: creating ml/include/Makefile
config.status: creating ml/src/Makefile
config.status: creating otherlibs/Makefile
config.status: creating otherlibs/highgui/Makefile
config.status: creating apps/Makefile
config.status: creating apps/haartraining/Makefile
config.status: creating apps/haartraining/include/Makefile
config.status: creating apps/haartraining/src/Makefile
config.status: creating interfaces/Makefile
config.status: creating interfaces/swig/Makefile
config.status: creating interfaces/swig/filtered/Makefile
config.status: creating interfaces/swig/general/Makefile
config.status: creating interfaces/swig/python/Makefile
config.status: creating interfaces/swig/octave/Makefile
config.status: creating tests/Makefile
config.status: creating tests/python/Makefile
config.status: creating tests/octave/Makefile
config.status: creating tests/cv/Makefile
config.status: creating tests/cv/src/Makefile
config.status: creating tests/cxts/Makefile
config.status: creating tests/cxcore/Makefile
config.status: creating tests/cxcore/src/Makefile
config.status: creating utils/Makefile
config.status: creating samples/Makefile
config.status: creating samples/c/Makefile
config.status: creating samples/python/Makefile
config.status: creating samples/octave/Makefile
config.status: creating cvconfig.h
config.status: cvconfig.h is unchanged
config.status: executing depfiles commands

General configuration ================================================
    Compiler:                 g++
    CXXFLAGS:                 -fno-strict-aliasing
    DEF_CXXFLAGS:             -Wall -fno-rtti -pipe -O3 -g -march=i686 -ffast-math -fomit-frame-pointer  -msse2 
    PY_CXXFLAGS:              -Wall -pipe -O3 -g -march=i686 -ffast-math -fomit-frame-pointer  -msse2 
    OCT_CXXFLAGS:             -fno-strict-aliasing -Wall -Wno-uninitialized -pipe -O3 -g -march=i686 -ffast-math -fomit-frame-pointer  -msse2 

    Install path:             /opt/opencv

HighGUI configuration ================================================

    Windowing system --------------
    Use Carbon / Mac OS X:    no
    Use gtk+ 2.x:             yes
    Use gthread:              yes

    Image I/O ---------------------
    Use ImageIO / Mac OS X:   no
    Use libjpeg:              no
    Use zlib:                 yes
    Use libpng:               yes
    Use libtiff:              no
    Use libjasper:            no
    Use libIlmImf:            no

    Video I/O ---------------------
    Use QuickTime / Mac OS X: no
    Use xine:                 no
    Use gstreamer:            no
    Use ffmpeg:               no
    Use dc1394 & raw1394:     no
    Use v4l:                  yes
    Use v4l2:                 yes
    Use unicap:               no

Wrappers for other languages =========================================
    SWIG                      
    Python                    no
    Octave                    no

Additional build settings ============================================
    Build demo apps           yes

Now run make ...

[root@localhost opencv-1.1.0]#

[root@localhost opencv-1.1.0]# which ffmpeg
/usr/local/bin/ffmpeg
[root@localhost opencv-1.1.0]# ffmpeg 
FFmpeg version git-svn-r20147, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  built on Oct  2 2009 17:46:15 with gcc 4.1.2 20080704 (Red Hat 4.1.2-44)
  configuration: 
  libavutil     50. 3. 0 / 50. 3. 0
  libavcodec    52.36. 0 / 52.36. 0
  libavformat   52.39. 0 / 52.39. 0
  libavdevice   52. 2. 0 / 52. 2. 0
  libswscale     0. 7. 1 /  0. 7. 1
At least one output file must be specified
[root@localhost opencv-1.1.0]#

[root@localhost opencv-1.1.0]# yum install ffmpeg-devel
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
 * rpmforge: fr2.rpmfind.net
 * base: ftp.iitm.ac.in
 * updates: ftp.iitm.ac.in
 * addons: ftp.iitm.ac.in
 * extras: ftp.iitm.ac.in
414 packages excluded due to repository priority protections
Setting up Install Process
Parsing package install arguments
Package ffmpeg-devel-0.5-2.el5.rf.i386 already installed and latest version
Nothing to do
[root@localhost opencv-1.1.0]# rpm -qa ffmpeg-devel
ffmpeg-devel-0.5-2.el5.rf