CODEWITHSUNDEEP
ffmpeglibavlibavformat
vinay samuel
vinay samuel

Reputation: 187

how do I write to avlibs AVOptions from C

I want to do the equivalent of the following command line from a C program.

ffmpeg ..... -movflags frag_keyframe

I have narrowed it down to setting some fields in priv_class in AVOutputFormat somehow. But I don't understand how AVOptions work, I could not find a good example that explains how AVOptions are set and used. I did come across av_opt_set but if I set the name field to "movflags" what is the val and do I set a separate option for frag_keyframe or is it embedded in the flags set for "movflags"? Thanks in advance for your time.

Upvotes: 2

Views: 944

Answers (1)

mgukov
mgukov

Reputation: 493

Try this

AVFormatContext * _format_context = ...

AVDictionary * params = NULL;
av_dict_set(&params, "movflags", "frag_keyframe", 0);
avformat_write_header(_format_context, &params);

Upvotes: 1

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