> Am 06.02.2020 um 20:24 schrieb Totte Karlsson 
> <[email protected]>:
> 
> ffmpeg.exe -y -hide_banner -vcodec rawvideo -f rawvideo -r 30 -s 658x492 
> -pix_fmt gray -i \\.\pipe\DEV_000F315BEBB8<file://./pipe/DEV_000F315BEBB8> -r 
> 30 -c:v libx264 -preset veryfast -crf 5 x:\\Videos\output.avi

Please test current FFmpeg git head, remove hide_banner from your command line 
and provide the command line together with the complete, uncut console output.

The output option “r 30” is unneeded and to answer your question: The semantic 
of “gray” is not fixed in the multimedia domain (but that shouldn’t rule out a 
bug, see above).

Carl Eugen
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