I'm not familiar with that. If you can post a small, self-contained example of 
what you are currently trying, possibly someone else can answer.

Brad

-----Original Message-----
From: Libav-user <[email protected]> On Behalf Of Hamilton Tobon 
Mosquera
Sent: Friday, 3 July 2020 10:54 PM
To: [email protected]
Cc: Brad Hards <[email protected]>
Subject: Re: [Libav-user] Options documentation

I appreciate you answered.

Yes, I'm trying to open a webcam as an input device (I take frames out of it). 
I know how to open it and capture frames, but it is opened in rawvideo mode and 
I need it to be MJPEG which I know is supported by the webcam. I guess the 
option is passed to the API function avformat_open_input(), which receives an 
AVDictionary **, but I don't know what options are available neither which 
values can be passed.

Any help or hint you can give me is a lot. Thank you.

Hamilton.

On 7/2/20 7:54 PM, Brad Hards wrote:
> I think the answer often depends on what the dictionary is being used for. I 
> find myself reading the code or looking for an example when unsure.
> Do you have a specific case you're trying to solve?
>
> Brad
>
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