#include <libavformat/avformat.h>

Data Fields
const char *	name

const char *	long_name
	Descriptive name for the format, meant to be more human-readable than name. More...

const char *	mime_type

const char *	extensions
	comma-separated filename extensions More...

enum AVCodecID	audio_codec
	default audio codec More...

enum AVCodecID	video_codec
	default video codec More...

enum AVCodecID	subtitle_codec
	default subtitle codec More...

int	flags
	can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER, AVFMT_NOTIMESTAMPS, AVFMT_VARIABLE_FPS, AVFMT_NODIMENSIONS, AVFMT_NOSTREAMS, AVFMT_ALLOW_FLUSH, AVFMT_TS_NONSTRICT, AVFMT_TS_NEGATIVE More...

const struct AVCodecTag const	codec_tag
	List of supported codec_id-codec_tag pairs, ordered by "better choice first". More...

const AVClass *	priv_class
	AVClass for the private context. More...

int	priv_data_size
	size of private data so that it can be allocated in the wrapper More...

int	flags_internal
	Internal flags. More...

int(*	write_header )(struct AVFormatContext *)

int(*	write_packet )(struct AVFormatContext , AVPacket pkt)
	Write a packet. More...

int(*	write_trailer )(struct AVFormatContext *)

int(*	interleave_packet )(struct AVFormatContext s, AVPacket pkt, int flush, int has_packet)
	A format-specific function for interleavement. More...

int(*	query_codec )(enum AVCodecID id, int std_compliance)
	Test if the given codec can be stored in this container. More...

void(*	get_output_timestamp )(struct AVFormatContext s, int stream, int64_t dts, int64_t *wall)

int(*	control_message )(struct AVFormatContext s, int type, void data, size_t data_size)
	Allows sending messages from application to device. More...

int(*	write_uncoded_frame )(struct AVFormatContext , int stream_index, AVFrame *frame, unsigned flags)
	Write an uncoded AVFrame. More...

int(*	get_device_list )(struct AVFormatContext s, struct AVDeviceInfoList device_list)
	Returns device list with it properties. More...

enum AVCodecID	data_codec
	default data codec More...

int(*	init )(struct AVFormatContext *)
	Initialize format. More...

void(*	deinit )(struct AVFormatContext *)
	Deinitialize format. More...

int(*	check_bitstream )(struct AVFormatContext s, struct AVStream st, const AVPacket *pkt)
	Set up any necessary bitstream filtering and extract any extra data needed for the global header. More...

Detailed Description

Examples: muxing.c, and remuxing.c.

Definition at line 509 of file avformat.h.

Field Documentation

◆ name

const char* AVOutputFormat::name

Definition at line 510 of file avformat.h.

◆ long_name

const char* AVOutputFormat::long_name

Descriptive name for the format, meant to be more human-readable than name.

You should use the NULL_IF_CONFIG_SMALL() macro to define it.

Definition at line 516 of file avformat.h.

◆ mime_type

const char* AVOutputFormat::mime_type

Definition at line 517 of file avformat.h.

◆ extensions

const char* AVOutputFormat::extensions

comma-separated filename extensions

Definition at line 518 of file avformat.h.

◆ audio_codec

enum AVCodecID AVOutputFormat::audio_codec

default audio codec

Examples: muxing.c.

Definition at line 520 of file avformat.h.

Referenced by main().

◆ video_codec

enum AVCodecID AVOutputFormat::video_codec

default video codec

Examples: muxing.c.

Definition at line 521 of file avformat.h.

Referenced by main().

◆ subtitle_codec

enum AVCodecID AVOutputFormat::subtitle_codec

default subtitle codec

Definition at line 522 of file avformat.h.

◆ flags

int AVOutputFormat::flags

can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER, AVFMT_NOTIMESTAMPS, AVFMT_VARIABLE_FPS, AVFMT_NODIMENSIONS, AVFMT_NOSTREAMS, AVFMT_ALLOW_FLUSH, AVFMT_TS_NONSTRICT, AVFMT_TS_NEGATIVE

Examples: muxing.c, remuxing.c, and transcoding.c.

Definition at line 529 of file avformat.h.

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

◆ codec_tag

const struct AVCodecTag* const* AVOutputFormat::codec_tag

List of supported codec_id-codec_tag pairs, ordered by "better choice first".

The arrays are all terminated by AV_CODEC_ID_NONE.

Definition at line 535 of file avformat.h.

◆ priv_class

const AVClass* AVOutputFormat::priv_class

AVClass for the private context.

Definition at line 538 of file avformat.h.

◆ priv_data_size

int AVOutputFormat::priv_data_size

size of private data so that it can be allocated in the wrapper

Definition at line 550 of file avformat.h.

◆ flags_internal

int AVOutputFormat::flags_internal

Internal flags.

See FF_FMT_FLAG_* in internal.h.

Definition at line 555 of file avformat.h.

◆ write_header

int(* AVOutputFormat::write_header) (struct AVFormatContext *)

Definition at line 557 of file avformat.h.

◆ write_packet

int(* AVOutputFormat::write_packet) (struct AVFormatContext *, AVPacket *pkt)

Write a packet.

If AVFMT_ALLOW_FLUSH is set in flags, pkt can be NULL in order to flush data buffered in the muxer. When flushing, return 0 if there still is more data to flush, or 1 if everything was flushed and there is no more buffered data.

Definition at line 565 of file avformat.h.

◆ write_trailer

int(* AVOutputFormat::write_trailer) (struct AVFormatContext *)

Definition at line 566 of file avformat.h.

◆ interleave_packet

int(* AVOutputFormat::interleave_packet) (struct AVFormatContext *s, AVPacket *pkt, int flush, int has_packet)

A format-specific function for interleavement.

If unset, packets will be interleaved by dts.

Parameters

	s	An AVFormatContext for output. pkt will be added to resp. taken from its packet buffer.
[in,out]	pkt	A packet to be interleaved if has_packet is set; also used to return packets. If no packet is returned (e.g. on error), pkt is blank on return.
	flush	1 if no further packets are available as input and all remaining packets should be output.
	has_packet	If set, pkt contains a packet to be interleaved on input; otherwise pkt is blank on input.

Returns: 1 if a packet was output, 0 if no packet could be output, < 0 if an error occurred

Definition at line 583 of file avformat.h.

◆ query_codec

int(* AVOutputFormat::query_codec) (enum AVCodecID id, int std_compliance)

Test if the given codec can be stored in this container.

Returns: 1 if the codec is supported, 0 if it is not. A negative number if unknown. MKTAG('A', 'P', 'I', 'C') if the codec is only supported as AV_DISPOSITION_ATTACHED_PIC

Definition at line 592 of file avformat.h.

◆ get_output_timestamp

void(* AVOutputFormat::get_output_timestamp) (struct AVFormatContext *s, int stream, int64_t *dts, int64_t *wall)

Definition at line 594 of file avformat.h.

◆ control_message

int(* AVOutputFormat::control_message) (struct AVFormatContext *s, int type, void *data, size_t data_size)

Allows sending messages from application to device.

Definition at line 599 of file avformat.h.

◆ write_uncoded_frame

int(* AVOutputFormat::write_uncoded_frame) (struct AVFormatContext *, int stream_index, AVFrame **frame, unsigned flags)

Write an uncoded AVFrame.

See av_write_uncoded_frame() for details.

The library will free *frame afterwards, but the muxer can prevent it by setting the pointer to NULL.

Definition at line 610 of file avformat.h.

◆ get_device_list

int(* AVOutputFormat::get_device_list) (struct AVFormatContext *s, struct AVDeviceInfoList *device_list)

Returns device list with it properties.

See also: avdevice_list_devices() for more details.

Definition at line 616 of file avformat.h.

◆ data_codec

enum AVCodecID AVOutputFormat::data_codec

default data codec

Definition at line 617 of file avformat.h.

◆ init

int(* AVOutputFormat::init) (struct AVFormatContext *)

Initialize format.

May allocate data here, and set any AVFormatContext or AVStream parameters that need to be set before packets are sent. This method must not write output.

Return 0 if streams were fully configured, 1 if not, negative AVERROR on failure

Any allocations made here must be freed in deinit().

Definition at line 627 of file avformat.h.

◆ deinit

void(* AVOutputFormat::deinit) (struct AVFormatContext *)

Deinitialize format.

If present, this is called whenever the muxer is being destroyed, regardless of whether or not the header has been written.

If a trailer is being written, this is called after write_trailer().

This is called if init() fails as well.

Definition at line 636 of file avformat.h.

◆ check_bitstream

int(* AVOutputFormat::check_bitstream) (struct AVFormatContext *s, struct AVStream *st, const AVPacket *pkt)

Set up any necessary bitstream filtering and extract any extra data needed for the global header.

Note: pkt might have been directly forwarded by a meta-muxer; therefore pkt->stream_index as well as the pkt's timebase might be invalid. Return 0 if more packets from this stream must be checked; 1 if not.

Definition at line 645 of file avformat.h.

The documentation for this struct was generated from the following file:

libavformat/avformat.h

Data Fields