Collaboration diagram for Encoding:

Data Structures
struct	RcOverride

Macros
#define	FF_MIN_BUFFER_SIZE 16384
	minimum encoding buffer size Used to avoid some checks during header writing. More...

Typedefs
typedef struct RcOverride	RcOverride

Enumerations
enum	Motion_Est_ID { ME_ZERO = 1, ME_FULL, ME_LOG, ME_PHODS, ME_EPZS, ME_X1, ME_HEX, ME_UMH, ME_TESA, ME_ITER =50 }
	motion estimation type. More...

Functions
AVCodec *	avcodec_find_encoder (enum AVCodecID id)
	Find a registered encoder with a matching codec ID. More...

AVCodec *	avcodec_find_encoder_by_name (const char *name)
	Find a registered encoder with the specified name. More...

int	avcodec_encode_audio2 (AVCodecContext avctx, AVPacket avpkt, const AVFrame frame, int got_packet_ptr)
	Encode a frame of audio. More...

int	avcodec_encode_video2 (AVCodecContext avctx, AVPacket avpkt, const AVFrame frame, int got_packet_ptr)
	Encode a frame of video. More...

int	avcodec_encode_subtitle (AVCodecContext avctx, uint8_t buf, int buf_size, const AVSubtitle *sub)

Detailed Description

Macro Definition Documentation

#define FF_MIN_BUFFER_SIZE 16384

minimum encoding buffer size Used to avoid some checks during header writing.

Definition at line 568 of file libavcodec/avcodec.h.

Referenced by avcodec_encode_video(), encode_frame(), encode_nals(), encode_picture_lossless(), encode_picture_ls(), flashsv2_encode_frame(), gif_encode_frame(), prores_encode_frame(), svq1_encode_frame(), and xvid_encode_frame().

Typedef Documentation

typedef struct RcOverride RcOverride

Enumeration Type Documentation

enum Motion_Est_ID

motion estimation type.

Enumerator
ME_ZERO	no search, that is use 0,0 vector whenever one is needed
ME_FULL
ME_LOG
ME_PHODS
ME_EPZS	enhanced predictive zonal search
ME_X1	reserved for experiments
ME_HEX	hexagon based search
ME_UMH	uneven multi-hexagon search
ME_TESA	transformed exhaustive search algorithm
ME_ITER	iterative search

Definition at line 575 of file libavcodec/avcodec.h.

Function Documentation

int avcodec_encode_audio2	(	AVCodecContext *	avctx,
		AVPacket *	avpkt,
		const AVFrame *	frame,
		int *	got_packet_ptr
	)

Encode a frame of audio.

Takes input samples from frame and writes the next output packet, if available, to avpkt. The output packet does not necessarily contain data for the most recent frame, as encoders can delay, split, and combine input frames internally as needed.

Parameters

avctx codec context

avpkt output AVPacket. The user can supply an output buffer by setting avpkt->data and avpkt->size prior to calling the function, but if the size of the user-provided data is not large enough, encoding will fail. If avpkt->data and avpkt->size are set, avpkt->destruct must also be set. All other AVPacket fields will be reset by the encoder using av_init_packet(). If avpkt->data is NULL, the encoder will allocate it. The encoder will set avpkt->size to the size of the output packet.

If this function fails or produces no output, avpkt will be freed using av_free_packet() (i.e. avpkt->destruct will be called to free the user supplied buffer).

Parameters

[in]	frame	AVFrame containing the raw audio data to be encoded. May be NULL when flushing an encoder that has the CODEC_CAP_DELAY capability set. If CODEC_CAP_VARIABLE_FRAME_SIZE is set, then each frame can have any number of samples. If it is not set, frame->nb_samples must be equal to avctx->frame_size for all frames except the last. The final frame may be smaller than avctx->frame_size.
[out]	got_packet_ptr	This field is set to 1 by libavcodec if the output packet is non-empty, and to 0 if it is empty. If the function returns an error, the packet can be assumed to be invalid, and the value of got_packet_ptr is undefined and should not be used.

Returns: 0 on success, negative error code on failure

Definition at line 1471 of file libavcodec/utils.c.

Referenced by audio_encode_example(), avcodec_encode_audio(), do_audio_out(), flush_encoders(), wrap(), and write_audio_frame().

int avcodec_encode_subtitle	(	AVCodecContext *	avctx,
		uint8_t *	buf,
		int	buf_size,
		const AVSubtitle *	sub
	)

Definition at line 1790 of file libavcodec/utils.c.

Referenced by do_subtitle_out(), and wrap().

int avcodec_encode_video2	(	AVCodecContext *	avctx,
		AVPacket *	avpkt,
		const AVFrame *	frame,
		int *	got_packet_ptr
	)

Encode a frame of video.

Takes input raw video data from frame and writes the next output packet, if available, to avpkt. The output packet does not necessarily contain data for the most recent frame, as encoders can delay and reorder input frames internally as needed.

Parameters

avctx codec context

avpkt output AVPacket. The user can supply an output buffer by setting avpkt->data and avpkt->size prior to calling the function, but if the size of the user-provided data is not large enough, encoding will fail. All other AVPacket fields will be reset by the encoder using av_init_packet(). If avpkt->data is NULL, the encoder will allocate it. The encoder will set avpkt->size to the size of the output packet. The returned data (if any) belongs to the caller, he is responsible for freeing it.

If this function fails or produces no output, avpkt will be freed using av_free_packet() (i.e. avpkt->destruct will be called to free the user supplied buffer).

Parameters

[in]	frame	AVFrame containing the raw video data to be encoded. May be NULL when flushing an encoder that has the CODEC_CAP_DELAY capability set.
[out]	got_packet_ptr	This field is set to 1 by libavcodec if the output packet is non-empty, and to 0 if it is empty. If the function returns an error, the packet can be assumed to be invalid, and the value of got_packet_ptr is undefined and should not be used.

Returns: 0 on success, negative error code on failure

Definition at line 1713 of file libavcodec/utils.c.

Referenced by avcodec_encode_video(), do_video_out(), encode_frame(), flush_encoders(), video_encode_example(), worker(), and write_video_frame().

AVCodec* avcodec_find_encoder ( enum AVCodecID id )

Find a registered encoder with a matching codec ID.

Parameters

id	AVCodecID of the requested encoder

Returns: An encoder if one was found, NULL otherwise.

Definition at line 2378 of file libavcodec/utils.c.

Referenced by add_stream(), asf_write_header1(), audio_encode_example(), avcodec_get_name(), avcodec_get_type(), avcodec_open2(), avcodec_string(), choose_encoder(), compute_status(), config(), estimate_best_b_count(), ffserver_opt_preset(), filter_codec_opts(), find_codec_or_die(), read_ffserver_streams(), show_codecs(), transcode_init(), and video_encode_example().

AVCodec* avcodec_find_encoder_by_name ( const char * name )

Find a registered encoder with the specified name.

Parameters

name	name of the requested encoder

Returns: An encoder if one was found, NULL otherwise.

Definition at line 2383 of file libavcodec/utils.c.

Referenced by find_codec_or_die(), opt_audio_codec(), opt_video_codec(), and show_help_codec().

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Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation