muxing.c File Reference

libavformat API example. More...

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <libavutil/avassert.h>
#include <libavutil/channel_layout.h>
#include <libavutil/opt.h>
#include <libavutil/mathematics.h>
#include <libavutil/timestamp.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#include <libswresample/swresample.h>

Go to the source code of this file.

Data Structures
struct	OutputStream

Macros
#define	STREAM_DURATION   10.0
#define	STREAM_FRAME_RATE   25 /* 25 images/s */
#define	STREAM_PIX_FMT   AV_PIX_FMT_YUV420P /* default pix_fmt */
#define	SCALE_FLAGS   SWS_BICUBIC

Functions
static void	log_packet (const AVFormatContext *fmt_ctx, const AVPacket *pkt)
static int	write_frame (AVFormatContext *fmt_ctx, AVCodecContext *c, AVStream *st, AVFrame *frame, AVPacket *pkt)
static void	add_stream (OutputStream *ost, AVFormatContext *oc, const AVCodec **codec, enum AVCodecID codec_id)
static AVFrame *	alloc_audio_frame (enum AVSampleFormat sample_fmt, const AVChannelLayout *channel_layout, int sample_rate, int nb_samples)
static void	open_audio (AVFormatContext *oc, const AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
static AVFrame *	get_audio_frame (OutputStream *ost)
static int	write_audio_frame (AVFormatContext *oc, OutputStream *ost)
static AVFrame *	alloc_picture (enum AVPixelFormat pix_fmt, int width, int height)
static void	open_video (AVFormatContext *oc, const AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
static void	fill_yuv_image (AVFrame *pict, int frame_index, int width, int height)
static AVFrame *	get_video_frame (OutputStream *ost)
static int	write_video_frame (AVFormatContext *oc, OutputStream *ost)
static void	close_stream (AVFormatContext *oc, OutputStream *ost)
int	main (int argc, char **argv)

Detailed Description

libavformat API example.

Output a media file in any supported libavformat format. The default codecs are used.

Definition in file muxing.c.

Macro Definition Documentation

STREAM_DURATION

#define STREAM_DURATION   10.0

Examples

muxing.c.

Definition at line 47 of file muxing.c.

STREAM_FRAME_RATE

#define STREAM_FRAME_RATE   25 /* 25 images/s */

Examples

muxing.c.

Definition at line 48 of file muxing.c.

STREAM_PIX_FMT

#define STREAM_PIX_FMT   AV_PIX_FMT_YUV420P /* default pix_fmt */

Examples

muxing.c.

Definition at line 49 of file muxing.c.

SCALE_FLAGS

#define SCALE_FLAGS   SWS_BICUBIC

Examples

muxing.c.

Definition at line 51 of file muxing.c.

Function Documentation

log_packet()

static void log_packet ( const AVFormatContext *  fmt_ctx, const AVPacket *  pkt  )

static

Examples

muxing.c.

Definition at line 73 of file muxing.c.

Referenced by write_frame().

write_frame()

static int write_frame ( AVFormatContext *  fmt_ctx, AVCodecContext *  c, AVStream *  st, AVFrame *  frame, AVPacket *  pkt  )

static

Examples

muxing.c.

Definition at line 84 of file muxing.c.

Referenced by write_audio_frame(), and write_video_frame().

add_stream()

static void add_stream ( OutputStream *  ost, AVFormatContext *  oc, const AVCodec **  codec, enum AVCodecID  codec_id  )

static

Examples

muxing.c.

Definition at line 126 of file muxing.c.

Referenced by main().

alloc_audio_frame()

static AVFrame * alloc_audio_frame ( enum AVSampleFormat  sample_fmt, const AVChannelLayout *  channel_layout, int  sample_rate, int  nb_samples  )

static

Examples

muxing.c.

Definition at line 217 of file muxing.c.

Referenced by open_audio().

open_audio()

static void open_audio ( AVFormatContext *  oc, const AVCodec *  codec, OutputStream *  ost, AVDictionary *  opt_arg  )

static

Examples

muxing.c.

Definition at line 245 of file muxing.c.

Referenced by main().

get_audio_frame()

static AVFrame * get_audio_frame ( OutputStream *  ost )

static

Examples

muxing.c.

Definition at line 311 of file muxing.c.

Referenced by write_audio_frame().

write_audio_frame()

static int write_audio_frame ( AVFormatContext *  oc, OutputStream *  ost  )

static

Examples

muxing.c.

Definition at line 340 of file muxing.c.

Referenced by main().

alloc_picture()

static AVFrame * alloc_picture ( enum AVPixelFormat  pix_fmt, int  width, int  height  )

static

Examples

muxing.c.

Definition at line 385 of file muxing.c.

Referenced by open_video().

open_video()

static void open_video ( AVFormatContext *  oc, const AVCodec *  codec, OutputStream *  ost, AVDictionary *  opt_arg  )

static

Examples

muxing.c.

Definition at line 408 of file muxing.c.

Referenced by main().

fill_yuv_image()

static void fill_yuv_image ( AVFrame *  pict, int  frame_index, int  width, int  height  )

static

Examples

muxing.c.

Definition at line 453 of file muxing.c.

Referenced by get_video_frame().

get_video_frame()

static AVFrame * get_video_frame ( OutputStream *  ost )

static

Examples

muxing.c.

Definition at line 474 of file muxing.c.

Referenced by write_video_frame().

write_video_frame()

static int write_video_frame ( AVFormatContext *  oc, OutputStream *  ost  )

static

Examples

muxing.c.

Definition at line 520 of file muxing.c.

Referenced by main().

close_stream()

static void close_stream ( AVFormatContext *  oc, OutputStream *  ost  )

static

Examples

muxing.c.

Definition at line 525 of file muxing.c.

Referenced by main().

main()

int main	(	int	argc,
		char **	argv
	)

Examples

muxing.c.

Definition at line 538 of file muxing.c.