#include <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...

ff_const59 struct AVOutputFormat *	next

int	priv_data_size
	size of private data so that it can be allocated in the wrapper 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 , AVPacket out, AVPacket *in, int flush)
	Currently only used to set pixel format if not YUV420P. 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...

int(*	create_device_capabilities )(struct AVFormatContext s, struct AVDeviceCapabilitiesQuery caps)
	Initialize device capabilities submodule. More...

int(*	free_device_capabilities )(struct AVFormatContext s, struct AVDeviceCapabilitiesQuery caps)
	Free device capabilities submodule. 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 , 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 495 of file avformat.h.

Field Documentation

◆ name

const char* AVOutputFormat::name

Definition at line 496 of file avformat.h.

Referenced by av_dump_format(), avformat_transfer_internal_stream_timing_info(), do_video_out(), log_slave(), main(), open_output_file(), print_sdp(), seg_init(), and show_formats_devices().

◆ 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 502 of file avformat.h.

Referenced by show_formats_devices().

◆ mime_type

const char* AVOutputFormat::mime_type

Definition at line 503 of file avformat.h.

◆ extensions

const char* AVOutputFormat::extensions

comma-separated filename extensions

Definition at line 504 of file avformat.h.

◆ audio_codec

enum AVCodecID AVOutputFormat::audio_codec

default audio codec

Definition at line 506 of file avformat.h.

Referenced by avformat_query_codec().

◆ video_codec

enum AVCodecID AVOutputFormat::video_codec

default video codec

Definition at line 507 of file avformat.h.

Referenced by avformat_query_codec(), and open_output_file().

◆ subtitle_codec

enum AVCodecID AVOutputFormat::subtitle_codec

default subtitle codec

Definition at line 508 of file avformat.h.

Referenced by avformat_query_codec(), and open_output_file().

◆ 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 515 of file avformat.h.

Referenced by add_stream(), avformat_transfer_internal_stream_timing_info(), do_video_out(), dump_stream_format(), init_muxer(), init_output_stream_encode(), main(), new_output_stream(), open_output_file(), seg_init(), and transcode_init().

◆ 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 521 of file avformat.h.

Referenced by avformat_query_codec(), hls_mux_init(), init_muxer(), init_output_stream_streamcopy(), seg_write_header(), and segment_mux_init().

◆ priv_class

const AVClass* AVOutputFormat::priv_class

AVClass for the private context.

Definition at line 524 of file avformat.h.

Referenced by chunk_mux_init(), ff_rtp_get_payload_type(), format_child_class_next(), hls_start(), hls_write_packet(), init_muxer(), segment_start(), show_format_opts(), and show_formats_devices().

◆ next

ff_const59 struct AVOutputFormat* AVOutputFormat::next

Definition at line 542 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 546 of file avformat.h.

Referenced by init_muxer().

◆ write_header

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

Definition at line 548 of file avformat.h.

Referenced by webm_chunk_write_header().

◆ 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 556 of file avformat.h.

Referenced by chunk_end(), and webm_chunk_write_packet().

◆ write_trailer

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

Definition at line 557 of file avformat.h.

Referenced by webm_chunk_write_trailer().

◆ interleave_packet

int(* AVOutputFormat::interleave_packet) (struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush)

Currently only used to set pixel format if not YUV420P.

Definition at line 561 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 570 of file avformat.h.

Referenced by avformat_query_codec().

◆ get_output_timestamp

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

Definition at line 572 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 577 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 588 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 594 of file avformat.h.

◆ create_device_capabilities

int(* AVOutputFormat::create_device_capabilities) (struct AVFormatContext *s, struct AVDeviceCapabilitiesQuery *caps)

Initialize device capabilities submodule.

See also: avdevice_capabilities_create() for more details.

Definition at line 599 of file avformat.h.

◆ free_device_capabilities

int(* AVOutputFormat::free_device_capabilities) (struct AVFormatContext *s, struct AVDeviceCapabilitiesQuery *caps)

Free device capabilities submodule.

See also: avdevice_capabilities_free() for more details.

Definition at line 604 of file avformat.h.

◆ data_codec

enum AVCodecID AVOutputFormat::data_codec

default data codec

Definition at line 605 of file avformat.h.

Referenced by avformat_query_codec().

◆ 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 615 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 624 of file avformat.h.

◆ check_bitstream

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

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

Return 0 if more packets from this stream must be checked; 1 if not.

Definition at line 630 of file avformat.h.

Referenced by dash_check_bitstream(), and seg_check_bitstream().

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

libavformat/avformat.h

Data Fields

Detailed Description

Field Documentation

◆ name

◆ long_name

◆ mime_type

◆ extensions

◆ audio_codec

◆ video_codec

◆ subtitle_codec

◆ flags

◆ codec_tag

◆ priv_class

◆ next

◆ priv_data_size

◆ write_header

◆ write_packet

◆ write_trailer

◆ interleave_packet

◆ query_codec

◆ get_output_timestamp

◆ control_message

◆ write_uncoded_frame

◆ get_device_list

◆ create_device_capabilities

◆ free_device_capabilities

◆ data_codec

◆ init

◆ deinit

◆ check_bitstream