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Defined in avformat.h

Open a media file as input. The codecs are not opened. Only the file header (if present) is read.

NOTE: If no output is desired, used av_alloc_format_context instead.

int av_open_input_file(AVFormatContext **ic_ptr,
                       const char *filename,
                       AVInputFormat *fmt,
                       int buf_size,
                       AVFormatParameters *ap);

AVFormatContext **ic_ptr

A pointer to an AVFormatContext pointer. The opened media file handle is put here.

const char *filename

Filename to open.

AVInputFormat *fmt

An AVInputFormat pointer. If non NULL, force the file format to use.

int buf_size

Optional buffer size (zero if default is OK).

AVFormatParameters *ap

An AVFormatParameters pointer containing additional parameters needed when opening the file (NULL if default).

0 if OK. AVERROR otherwise.

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