illegal instruction error

Question

error message:

File of type 8 saved to: /my/target/directory/211950.avi 
Illegal instruction 


motion.conf:

daemon on
setup_mode off
input 8
rotate 0
framerate 20
netcam_url http://my.net.cam.url
netcam_userpass user:pass
auto_brightness off
brightness 0
contrast 0
saturation 0
hue 0
threshold 1500
noise_level 32
noise_tune on
lightswitch 0
minimum_motion_frames 1
pre_capture 5
post_capture 10
ausing all Motion to be written to one single mpeg file and no pre_capture.
gap 5
max_mpeg_time 0
output_normal off
output_motion off
quality 75
ppm off
ffmpeg_cap_new on
ffmpeg_video_codec mpeg4
ffmpeg_deinterlace off
locate off
text_right %Y-%m-%d\n%T-%q
text_changes off
text_event %Y%m%d%H%M%S
text_double off
target_dir /my/target/directory
snapshot_filename %v-%Y%m%d%H%M%S-snapshot
jpeg_filename %v-%Y%m%d%H%M%S-%q
movie_filename %H%M%S
webcam_port 8081
webcam_quality 50
webcam_motion off
webcam_maxrate 1
webcam_localhost off
webcam_limit 0
quiet on


edit: I've also tried ffmpeg_video_codec mpeg1 in motion.conf but that gives the followign error:
*** mpeg1 support for normal videos has been disabled ***
 ffopen_open error creating (new) file [/my/target/directory/224454]:


console output when I start motion:

# /opt/etc/init.d/S99motion 
[0] Processing thread 0 - config file /opt/etc/motion.conf 
[0] Motion 3.2.12 Started 
[0] ffmpeg LIBAVCODEC_BUILD 3356160 LIBAVFORMAT_BUILD 3411200 
[0] Thread 1 is from /opt/etc/motion.conf 
[1] Thread 1 started 
[1] Resizing pre_capture buffer to 1 items 
[1] Started stream webcam server in port 8081 
[1] Resizing pre_capture buffer to 6 items 

Environment

Answer