[FFmpeg-user] ffplay pipe output to ffmpeg (Windows)

[Jason Runta]

I'm trying to get a preview of my webcam BEFORE doing an encode pass on it.
So I thought, 'why can't I just pipe the output from ffplay to ffmpeg'?

ffplay -f dshow -i video="Microsoft LifeCam Cinema":audio="Desktop
Microphone (Cinema - Mi" >(ffmpeg -f dshow -s 640x480 -i - -c:v libx264
-tune zerolatency -preset ultrafast -b:v 400k -pix_fmt yuv420p -c:a:0
libmp3lame -q:a 2 -b:a:0 56k -maxrate 750k -c:v:1 copy -f flv mycamera.flv)

I'm on Windows, and unfortunately get a: "pipe:: Not enough space" error
and then the ffmpeg process terminates.

Is there a proper way to do this?