FFmpeg Error: invalid data found when processing input -

FFmpeg Error: invalid data found when processing input -

i having issue ffmpeg while trying encode flv

here command

ffmpeg -i 182.1.mov -b 250k -deinterlace -vcodec flv1 -acodec mp3 182.1.flv

yes flv should installed correctly, when run ffmpeg -codecs list flv1 alternative abilities dev.l.

this error recieve

could not write header output file #0 (incorrect codec parameters ?): invalid info found when processing input

ffmpeg