Hi there. I have almost a perfect install but I find a very weird issue with mp4 videos created by Windows movie maker.

...Seems like the videos aren't being converted and they are just renamed to something.flv Look at the debug:

Code:
Find video duration - START

/usr/local/bin/ffmpeg -i /home/tunel/videos/video/Final_EPPL.mp4

FFmpeg version SVN-r23607, Copyright (c) 2000-2010 the FFmpeg developers
  built on Jun 14 2010 16:19:36 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
  configuration: --enable-libmp3lame --enable-libvorbis --disable-mmx --enable-shared
  libavutil     50.19. 0 / 50.19. 0
  libavcodec    52.76. 0 / 52.76. 0
  libavformat   52.68. 0 / 52.68. 0
  libavdevice   52. 2. 0 / 52. 2. 0
  libavfilter    1.20. 0 /  1.20. 0
  libswscale     0.11. 0 /  0.11. 0

Seems stream 0 codec frame rate differs from container frame rate: 2997.00 (2997/1) -> 29.97 (2997/100)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/tunel/videos/video/Final_EPPL.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    encoder         : Lavf52.37.0
  Duration: 00:00:30.74, start: 0.000000, bitrate: 5802 kb/s
    Stream #0.0(eng): Video: mpeg4, yuv420p, 640x360 [PAR 1:1 DAR 16:9], 5675 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 2997 tbc
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 123 kb/s
At least one output file must be specified

Duration (ffmpeg): 30
DURATION: 00:30
It seems that the only working mp4 are the ones created using h.264 because this error doesn't happen when I convert a h.264 mp4.

I'm using default settings in video_conversion.php + the latest version of mplayer.

Need help :(