ffmpeg_open: avcodec_open - could not open codec mpeg4

Question

I build ffmpeg RPM and motion RPM for pidora on my raspberry pi. ffmpeg: FFmpeg version 0.6.6, Copyright (c) 2000-2010 the FFmpeg developers built on Jul 4 2013 10:28:23 with gcc 4.7.2 20120921 (Red Hat 4.7.2-2) configuration: --prefix=/usr --libdir=/usr/lib --shlibdir=/usr/lib --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab libavutil 50.15. 1 / 50.15. 1 libavcodec 52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1.19. 0 / 1.19. 0 libswscale 0.11. 0 / 0.11. 0 libpostproc 51. 2. 0 / 51. 2. 0

motion is build from the actual trunk using this ffmpeg installation.

When i start "motion -c /etc/motion/motion.cfg" i'll get the following error in the logfile:

Encoding using ffmpeg as command will work very well!

ffmpeg -f video4linux2 -s 1280x720 -r 25 -i /dev/video0 -vcodec mpeg4 TEST-VIDEO.avi

motion.log:

[1] [NTC] [ALL] [Jul 07 20:52:59] motion_init: Started motion-stream server in port 8081 auth Disabled
[1] [NTC] [EVT] [Jul 07 20:53:01] event_new_video FPS 5
[1] [ERR] [ENC] [Jul 07 20:53:01] ffmpeg_open: avcodec_open - could not open codec mpeg4
[1] [ERR] [EVT] [Jul 07 20:53:01] event_ffmpeg_newfile: ffopen_open error creating (new) file [/var/motion/01-20130707205301.avi]: Success
[1] [NTC] [ALL] [Jul 07 20:53:01] motion_detected: Motion detected - starting event 1
[1] [NTC] [ALL] [Jul 07 20:53:01] motion_loop: Thread exiting

motion.conf:
daemon on
process_id_file /var/run/motion.pid
setup_mode off
logfile /var/log/motion.log
log_level 6
log_type all
videodevice /dev/video0
v4l2_palette 17
input -1
norm 0
frequency 0
rotate 0
width 320
height 240
framerate 5
minimum_frame_time 0
netcam_keepalive off
netcam_tolerant_check off
auto_brightness off
brightness 0
contrast 0
saturation 0
hue 0
roundrobin_frames 1
roundrobin_skip 1
switchfilter off
threshold 1500
threshold_tune off
noise_level 32
noise_tune on
despeckle_filter EedDl
smart_mask_speed 0
lightswitch 0
minimum_motion_frames 1
pre_capture 0
post_capture 0
event_gap 60
max_movie_time 0
emulate_motion off
output_pictures off
output_debug_pictures off
quality 75
picture_type jpeg
ffmpeg_output_movies on
ffmpeg_output_debug_movies off
ffmpeg_timelapse 0
ffmpeg_timelapse_mode daily
ffmpeg_bps 500000
ffmpeg_variable_bitrate 0
ffmpeg_video_codec mpeg4
ffmpeg_deinterlace off
sdl_threadnr 0
use_extpipe off
snapshot_interval 0
locate_motion_mode off
locate_motion_style box
text_right %Y-%m-%d\n%T-%q
text_changes off
text_event %Y%m%d%H%M%S
text_double off
target_dir /var/motion
snapshot_filename %v-%Y%m%d%H%M%S-snapshot
picture_filename %v-%Y%m%d%H%M%S-%q
movie_filename %v-%Y%m%d%H%M%S
timelapse_filename %Y%m%d-timelapse
ipv6_enabled off
stream_port 8081
stream_quality 50
stream_motion off
stream_maxrate 1
stream_localhost on
stream_limit 0
stream_auth_method 0
webcontrol_port 8080
webcontrol_localhost on
webcontrol_html_output on
track_type 0
track_auto off
track_iomojo_id 0
track_step_angle_x 10
track_step_angle_y 10
track_move_wait 10
track_speed 255
track_stepsize 40
quiet on
on_movie_end /etc/motion/uploader.py /etc/motion/uploader.cfg %f

Environment

Motion version:	trunkREV557
ffmpeg version:	0.6.6
Libraries:	ffmpeg
Server OS:	pidora 18

-- UweWeng - 07 Jul 2013

Answer