[FFmpeg-user] Black screen when capturing Windows desktop with audio (gdigrab, dshow)

[German Geraskin]

>
> Are you using a new filename each time?  Sometimes the "select y to
> overwrite file" message gets lost in the shuffle...
>
I use -y to overwrite an output file because when experimenting with
settings I start the command many times in a row and just do not need
to keep the output files.