When I open the second usb camera,a error occurs:
[dshow @ 000001d844a45600] Could not run graph (sometimes caused by a device already in use by other application)
1.ffplay -f dshow -i video="WKBB-180809"
2.ffplay -f dshow -i video="USB Camera"
ffmpeg version N-93885-gc61d16cf3b Copyright (c) 2000-2019 the FFmpeg developers
system version: win10
but I can run this successfuly on the other WIN10 mache with the same two cameras.I don't how why,and can't search anything helpful.I am looking forward for your reply,thanks.
Questions involving a Windows version of FFmpeg.
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