ffmpeg split screen from mjpeg error -

ffmpeg split screen from mjpeg error -

i know may possible duplicate of this, but...

i'm trying utilize reply given there this:

ffmpeg.exe -i http://xxx:8080/video -i http://yyy:8080/video -filter_complex "[0:v] scale=iw/2:ih/2, pad=2*iw:ih [left]; [1:v] scale=iw/3:ih/3, fade=out:300:30:alpha=1[right]; [left][right] overlay=main_w/2:0 [out]" -b:v 768k output.mp4

but getting error:

output pad "default" type video of filter instance "parsed_overlay_4" of overlay not connected destination

what doing wrong?

ok, found solution...

had add together -map "[out]" param , works!

ffmpeg