[Libav-user] list all available formats of webcam

[Hristo Ivanov]

Hi.

I faced a similar problem:

http://ffmpeg.org/pipermail/libav-user/2018-October/011413.html

I think there is no way to retrieve the information using the FFMPEG API.

As a workaround you can use a log call back to store the printed formats
info and later parse that information.

Regards.

Please share if you find a better solution.
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