Video Upload Error

I seem to be unable to upload or import any video files with the exception of FLV files. Any ideas?

Here's my output when I run a manual conversion:

STARTING VIDEO CONVERSION (process_queue.id = 21)


--------------------------------------------------------------------------------

File: /home/nfully/public_html/video/riding.mpg

################################################## ##

SELECT * FROM `video` WHERE `VID`=21

################################################## ##

Video id: 21

Find video duration - START

Duration (ffmpeg-php): 121


DURATION: 02:01

Create Thumbnail - START

Create Thumbnail with ffmpeg-php - END

CONVERT COMMAND: /usr/bin/mencoder '/home/nfully/public_html/video/riding.mpg' -o /home/nfully/public_html/flvideo/12043809141986768969.flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=500:mbd=2:mv0:trell:v4mv:cbp:l ast_pred=3 -srate 22050 -ofps 24 -vf harddup

################################################## ##

Array
(
[0] => MEncoder 1.0rc1-3.4.6 (C) 2000-2006 MPlayer Team
[1] => CPU: Dual-Core AMD Opteron(tm) Processor 2212 (Family: 15, Model: 65, Stepping: 2)
[2] => CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
[3] => Compiled with runtime CPU detection.
[4] => success: format: 0 data: 0x0 - 0xd1c11c
[5] => MPEG-PS file format detected.
[6] => VIDEO: MPEG1 352x240 (aspect 12) 29.970 fps 800.0 kbps (100.0 kbyte/s)
[7] => [V] filefmt:2 fourcc:0x10000001 size:352x240 fps:29.97 ftime:=0.0334
[8] => ================================================== ========================
[9] => Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
[10] => AUDIO: 48000 Hz, 2 ch, s16le, 64.0 kbit/4.17% (ratio: 8000->192000)
[11] => Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
[12] => ================================================== ========================
[13] =>
[14] => Exiting...
)

################################################## ##

Return value: Exiting...

Running flvtool2: /usr/local/bin/flvtool2 -U /home/nfully/public_html/flvideo/12043809141986768969.flv

Convert Error or converted video is less than 1 kb in size, try upload a big video. If that do not work, verify convert command works on the server.

Edit include/settings/video_conversion.php replace the existing command with this.

Code:

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$cmd_mencoder = "$config[mencoder] '$video_src' -o $video_flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=500:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -srate 22050 -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames";

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Thank you kindly. That does seem to have done the job!