FFmpeg: doc/examples/transcoding.c File Reference

FFmpeg

#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavfilter/buffersink.h>
#include <libavfilter/buffersrc.h>
#include <libavutil/channel_layout.h>
#include <libavutil/opt.h>
#include <libavutil/pixdesc.h>

Go to the source code of this file.

Data Structures
struct	FilteringContext

struct	StreamContext

Functions
static int	open_input_file (const char *filename)

static int	open_output_file (const char *filename)

static int	init_filter (FilteringContext fctx, AVCodecContext dec_ctx, AVCodecContext enc_ctx, const char filter_spec)

static int	init_filters (void)

static int	encode_write_frame (unsigned int stream_index, int flush)

static int	filter_encode_write_frame (AVFrame *frame, unsigned int stream_index)

static int	flush_encoder (unsigned int stream_index)

int	main (int argc, char **argv)

Variables
static AVFormatContext *	ifmt_ctx

static AVFormatContext *	ofmt_ctx

static FilteringContext *	filter_ctx

static StreamContext *	stream_ctx

Detailed Description

API example for demuxing, decoding, filtering, encoding and muxing

Definition in file transcoding.c.

Function Documentation

◆ open_input_file()

static int open_input_file ( const char * filename )

static

Examples: transcoding.c.

Definition at line 59 of file transcoding.c.

Referenced by main().

◆ open_output_file()

static int open_output_file ( const char * filename )

static

Examples: transcoding.c.

Definition at line 121 of file transcoding.c.

Referenced by main().

◆ init_filter()

static int init_filter	(	FilteringContext *	fctx,
		AVCodecContext *	dec_ctx,
		AVCodecContext *	enc_ctx,
		const char *	filter_spec
	)

static

Examples: transcoding.c.

Definition at line 236 of file transcoding.c.

Referenced by init_filters().

◆ init_filters()

static int init_filters ( void )

static

Examples: transcoding.c.

Definition at line 385 of file transcoding.c.

Referenced by main().

◆ encode_write_frame()

static int encode_write_frame	(	unsigned int	stream_index,
		int	flush
	)

static

Examples: transcoding.c.

Definition at line 423 of file transcoding.c.

Referenced by filter_encode_write_frame(), and flush_encoder().

◆ filter_encode_write_frame()

static int filter_encode_write_frame	(	AVFrame *	frame,
		unsigned int	stream_index
	)

static

Examples: transcoding.c.

Definition at line 460 of file transcoding.c.

Referenced by main().

◆ flush_encoder()

static int flush_encoder ( unsigned int stream_index )

static

Examples: transcoding.c.

Definition at line 499 of file transcoding.c.

Referenced by main().

◆ main()

int main	(	int	argc,
		char **	argv
	)

Examples: transcoding.c.

Definition at line 509 of file transcoding.c.

Variable Documentation

◆ ifmt_ctx

AVFormatContext* ifmt_ctx

static

Examples: remuxing.c, and transcoding.c.

Definition at line 39 of file transcoding.c.

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

◆ ofmt_ctx

AVFormatContext* ofmt_ctx

static

Examples: remuxing.c, and transcoding.c.

Definition at line 40 of file transcoding.c.

Referenced by encode_write_frame(), main(), and open_output_file().

◆ filter_ctx

FilteringContext* filter_ctx

static

Examples: transcoding.c.

Definition at line 49 of file transcoding.c.

Referenced by activate(), default_filter_name(), dnn_classify_activate(), dnn_classify_post_proc(), dnn_detect_activate(), dnn_detect_post_proc(), dnn_detect_post_proc_ov(), dnn_detect_post_proc_tf(), encode_write_frame(), ff_dnn_init(), ff_dnn_load_model_native(), ff_dnn_load_model_ov(), ff_dnn_load_model_tf(), filter_encode_write_frame(), init_filters(), main(), print_digraph(), and print_formats().

◆ stream_ctx

StreamContext* stream_ctx

static

Examples: transcoding.c.

Definition at line 57 of file transcoding.c.

Referenced by encode_write_frame(), flush_encoder(), init_filters(), main(), open_input_file(), and open_output_file().