get command line from GUI?

[xezoyu]

I have a problem transcoding live stream to file whihc can be watched in QuickTIme(mp4/mov).
namelly, when I do it from GUI, selected capture device, profile h264+aac and convert to test.mp4(or test.mov) I can open and watch file in QuickTime. When I tried same thing from command line using
"#transcode{venc=x264{keyint=250,minkeyint=25},vcodec=h264,vb=500,threads=0,fps=25,scale=1,acodec=mp4a,ab=64,channels=2,samplerate=44100,audio- sync}:standard{access=file,mux=mp4,dst="C:\\test.mp4"}"
I can't open this file from QuickTime, not even in windows media player. If I change paramtere mux to "mux=ts" then file can be watched in windows media player but still not in QuickTime.

I assume that GUI is using ffmpeg for coding and muxing and I'm using x264 ...

Is there any to see command line parameters generated by GUI?
Or how to transcode live stream to mov/mp4 file?