[Libav-user] Options documentation

Brad Hards bradh at frogmouth.net
Sat Jul 4 01:47:14 EEST 2020

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.


-----Original Message-----
From: Libav-user <libav-user-bounces at ffmpeg.org> On Behalf Of Hamilton Tobon Mosquera
Sent: Friday, 3 July 2020 10:54 PM
To: libav-user at ffmpeg.org
Cc: Brad Hards <bradh at frogmouth.net>
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.


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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