Can't convert to .FLV?

[smarttart62]

I'm trying to convert some .AVI files into .FLV files and i'm having troubles. Without knowing i had accidently converted into MPG-4, but when i switched that to .FLV it takes a second then says "Done" (of course the file turns out blank)...

I've even tried converting from the newly created MPG-4, but that doesn't work.

My console has this to say:
EXEC: C:\Program Files\Red Kawa\Video Converter\Encoders\Video\FFmpeg_6830\ffmpeg.exe -y -i "C:\torrents\Lost - Complete Season 2 [HDTV][XviD]\Lost Season 3 Episode 1-6\Lost - 03x06 (HDTV-XOR) I Do.avi" -f flv -vcodec flv -b 768k -ac 2 -ab 128 "C:\Program Files\Red Kawa\Video Converter\Videos\PS3\FLV\Lost - 03x06 (HDTV-XOR) I Do.flv"

FFmpeg version SVN-r6830, Copyright (c) 2000-2006 Fabrice Bellard, et al.
configuration: --enable-mp3lame --enable-libogg --enable-vorbis --enable-faad --enable-faac --enable-xvid --enable-x264 --enable-mingw32 --enable-a52 --enable-dts --enable-pp --enable-gpl --enable-memalign-hack --enable-amr_nb --enable-amr_wb --enable-swscaler --enable-avisynth
libavutil version: 49.0.2
libavcodec version: 51.22.0
libavformat version: 50.6.0
built on Oct 29 2006 15:41:38, gcc: 4.0.3

Seems that stream 0 comes from film source: 23.98 (65535/2733) -> 23.98 (23976024/1000000)
Input #0, avi, from 'C:\torrents\Lost - Complete Season 2 [HDTV][XviD]\Lost Season 3 Episode 1-6\Lost - 03x06 (HDTV-XOR) I Do.avi':
Duration: 00:42:11.7, start: 0.000000, bitrate: 1157 kb/s
MSG - Total Seconds: 2531.7
Stream #0.0: Video: mpeg4, yuv420p, 608x336, 23.98 fps(r)
Stream #0.1: Audio: mp3, 48000 Hz, stereo, 128 kb/s
Output #0, flv, to 'C:\Program Files\Red Kawa\Video Converter\Videos\PS3\FLV\Lost - 03x06 (HDTV-XOR) I Do.flv':
Stream #0.0: Video: flv, yuv420p, 608x336, q=2-31, 768 kb/s, 23.98 fps(c)
Stream #0.1: Audio: mp3, 48000 Hz, stereo, 128 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
[flv @ 008EFF00]removing common factors from framerate
[mp3 @ 008EFF00]flv doesnt support that sample rate, choose from (44100, 22050, 11025)
Could not write header for output file #0 (incorrect codec parameters ?)
EXEC: C:\Program Files\Red Kawa\Video Converter\Encoders\Video\FFmpeg_6830\ffmpeg.exe -y -i "C:\torrents\Lost - Complete Season 2 [HDTV][XviD]\Lost Season 3 Episode 1-6\Lost - 03x06 (HDTV-XOR) I Do.avi" -f image2 -ss 5 -vframes 1 -s 90x90 -an "C:\Program Files\Red Kawa\Video Converter\Videos\PS3\FLV\Lost - 03x06 (HDTV-XOR) I Do.jpg"

FFmpeg version SVN-r6830, Copyright (c) 2000-2006 Fabrice Bellard, et al.
configuration: --enable-mp3lame --enable-libogg --enable-vorbis --enable-faad --enable-faac --enable-xvid --enable-x264 --enable-mingw32 --enable-a52 --enable-dts --enable-pp --enable-gpl --enable-memalign-hack --enable-amr_nb --enable-amr_wb --enable-swscaler --enable-avisynth
libavutil version: 49.0.2
libavcodec version: 51.22.0
libavformat version: 50.6.0
built on Oct 29 2006 15:41:38, gcc: 4.0.3

Seems that stream 0 comes from film source: 23.98 (65535/2733) -> 23.98 (23976024/1000000)
Input #0, avi, from 'C:\torrents\Lost - Complete Season 2 [HDTV][XviD]\Lost Season 3 Episode 1-6\Lost - 03x06 (HDTV-XOR) I Do.avi':
Duration: 00:42:11.7, start: 0.000000, bitrate: 1157 kb/s
MSG - Total Seconds: 2531.7
Stream #0.0: Video: mpeg4, yuv420p, 608x336, 23.98 fps(r)
Stream #0.1: Audio: mp3, 48000 Hz, stereo, 128 kb/s
Output #0, image2, to 'C:\Program Files\Red Kawa\Video Converter\Videos\PS3\FLV\Lost - 03x06 (HDTV-XOR) I Do.jpg':
Stream #0.0: Video: mjpeg, yuvj420p, 90x90, q=2-31, 200 kb/s, 23.98 fps(c)
Stream mapping:
Stream #0.0 -> #0.0
[mjpeg @ 008EFF00]removing common factors from framerate
frame= 1 q=2.8 Lsize= 0kB time=0.0 bitrate= 0.0kbits/s

video:4kB audio:0kB global headers:0kB muxing overhead -100.000000%

Thanks for any and all of the help anyone can provide on this matter. I'd like to see a solution, but if we can't find one i'll just drop it and instead use the 360's media center.
-Steve