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Ilgrim/gist:a1bd343fcd4b9b57c8dfe6e0b8f2c3f9

Forked from amki/gist:3210277
Created August 4, 2019 10:26
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gistfile1.cpp
AVFormatContext *formatC = avformat_alloc_context();
AVDictionary* options = NULL;
av_dict_set(&options,"list_devices","true",0);
AVInputFormat *iformat = av_find_input_format("dshow");
avformat_open_input(&formatC,"video=dummy",iformat,&options);
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