[FFmpeg-user] ffmpeg and two (2) logitech 920 webcams

Roger Pack rogerdpack2 at gmail.com
Sun Jun 3 08:24:15 EEST 2018

On Sat, May 19, 2018 at 4:34 PM, Brenda Spinner <brendaspinner at gmail.com>

> I am using the following line to preview my webcam:
> ffmpeg -s 1280x720 -framerate 30 -pix_fmt yuv420p -rtbufsize 100MB -f dshow
> -i video="Logitech Cam#1" -c:v copy -an -f sdl "WebCAM Preview"
> this line works fine with cam #1, however when try it with cam #2, I get
> the error:
> [dshow @ 00000000002d8920] Could not set video options video=Logitech
> Cam#2: I/O error

Try it without the framerate/pix_fmt options...maybe the capabilities

Also -loglevel debug might help

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