FFmpeg: doc/examples/filtering_video.c File Reference

FFmpeg

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavfilter/buffersink.h>
#include <libavfilter/buffersrc.h>
#include <libavutil/opt.h>

Go to the source code of this file.

Macros
#define	_XOPEN_SOURCE 600 /* for usleep */

Functions
static int	open_input_file (const char *filename)

static int	init_filters (const char *filters_descr)

static void	display_frame (const AVFrame *frame, AVRational time_base)

int	main (int argc, char **argv)

Variables
const char *	filter_descr = "scale=78:24,transpose=cclock"

static AVFormatContext *	fmt_ctx

static AVCodecContext *	dec_ctx

AVFilterContext *	buffersink_ctx

AVFilterContext *	buffersrc_ctx

AVFilterGraph *	filter_graph

static int	video_stream_index = -1

static int64_t	last_pts = AV_NOPTS_VALUE

Detailed Description

API example for decoding and filtering

Definition in file filtering_video.c.

Macro Definition Documentation

◆ _XOPEN_SOURCE

#define _XOPEN_SOURCE 600 /* for usleep */

Definition at line 30 of file filtering_video.c.

Function Documentation

◆ open_input_file()

static int open_input_file ( const char * filename )

static

Examples: filtering_video.c.

Definition at line 54 of file filtering_video.c.

Referenced by main().

◆ init_filters()

static int init_filters ( const char * filters_descr )

static

Examples: filtering_video.c.

Definition at line 92 of file filtering_video.c.

Referenced by main().

◆ display_frame()

static void display_frame	(	const AVFrame *	frame,
		AVRational	time_base
	)

static

Examples: filtering_video.c.

Definition at line 179 of file filtering_video.c.

Referenced by main().

◆ main()

int main	(	int	argc,
		char **	argv
	)

Examples: filtering_video.c.

Definition at line 210 of file filtering_video.c.

Variable Documentation

◆ filter_descr

const char* filter_descr = "scale=78:24,transpose=cclock"

Examples: filtering_audio.c, and filtering_video.c.

Definition at line 41 of file filtering_video.c.

Referenced by main().

◆ fmt_ctx

AVFormatContext* fmt_ctx

static

Examples: filtering_video.c.

Definition at line 46 of file filtering_video.c.

Referenced by init_filters(), main(), and open_input_file().

◆ dec_ctx

AVCodecContext* dec_ctx

static

Examples: filtering_video.c.

Definition at line 47 of file filtering_video.c.

Referenced by init_filters(), main(), and open_input_file().

◆ buffersink_ctx

AVFilterContext* buffersink_ctx

Examples: filtering_video.c.

Definition at line 48 of file filtering_video.c.

Referenced by init_filters(), and main().

◆ buffersrc_ctx

AVFilterContext* buffersrc_ctx

Examples: filtering_video.c.

Definition at line 49 of file filtering_video.c.

Referenced by init_filters(), and main().

◆ filter_graph

AVFilterGraph* filter_graph

Examples: filtering_video.c.

Definition at line 50 of file filtering_video.c.

Referenced by init_filters(), and main().

◆ video_stream_index

int video_stream_index = -1

static

Examples: filtering_video.c.

Definition at line 51 of file filtering_video.c.

Referenced by init_filters(), main(), and open_input_file().

◆ last_pts

int64_t last_pts = AV_NOPTS_VALUE

static

Examples: filtering_video.c.

Definition at line 52 of file filtering_video.c.

Referenced by display_frame(), find_and_decode_index(), and write_index().