Cron acts up converting Videos

Hello

Following issue:
I installed Drupal Video and its components, FFMPEG is installed too and if i run it on the Server itself there is no problem at all converting Videos into .flv.
Now when i go into the Drupal Interface, select the file and save it, it always says "Transcoding failed".

Cron gives me this:

"export MALLOC_CHECK_=1; time /usr/local/bin/ffmpeg -v 0 -y -i 'sites/bellastoria.de/files/videos/original/patientenberichten.mp4' -b k -r -g 0 -s 0x0 -an sites/bellastoria.de/files/videos/temp/32.flv -pass 1 -passlogfile sites/bellastoria.de/files/videos/temp/2pass.32.log -b 200000 -r 400x300 2>&1 malloc: using debugging hooks FFmpeg version SVN-r17016, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --enable-gpl --enable-libmp3lame --enable-libfaad --enable-libfaac --enable-shared --enable-libgsm --enable-libtheora --enable-libvorbis --enable-zlib libavutil 49.14. 0 / 49.14. 0 libavcodec 52.12. 0 / 52.12. 0 libavformat 52.25. 0 / 52.25. 0 libavdevice 52. 1. 0 / 52. 1. 0 built on Feb 10 2009 14:40:39, gcc: 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) Unable to parse option value "k": undefined constant or missing ( Invalid value 'k' for option 'b' -"

I have seriously no idea why this is happening.

Thanks in Advance for your help.

DK~