VLC stream grayscale

[tronklol]

Hi, is it possible to stream an yuv 4:2:0 in greyscale? I tried with:
cvlc -vvv cut.wmv --grayscale --sout="#transcode{vcodec=h264, vb=2000,acodec=none,height=360,width=640,aenc=fdkaac,ab=256}:std{mux=ts,access=udp,dst=192.168.1.157:4321}".
Does not work, the video still with colours .
I really need it, any help is welcome

[Rémi Denis-Courmont]

--grayscale only works when decoding with avcodec. If your input is raw, it won't have any effect.

[tronklol]

Firstly, thanks for your answer. So there is no way to keep use that video for stream it in grayscale?

[Rémi Denis-Courmont]

Someone would have to write a video filter to clear chroma planes.

[tronklol]

Ah, ok. Thanks so much