The packet contains a keyframe.

Examples:

doc/examples/muxing.c.

Definition at line 1084 of file avcodec.h.

Referenced by a64multi_encode_frame(), ape_tag_read_field(), asf_read_picture(), asf_read_pts(), asf_write_packet(), av_read_frame(), avcodec_encode_audio2(), avi_write_packet(), avpriv_dv_produce_packet(), avs_read_audio_packet(), avs_read_video_packet(), avui_encode_frame(), bmp_encode_frame(), cdxl_read_packet(), compute_pkt_fields(), dc1394_read_common(), decode_frame(), dirac_gptopts(), dnxhd_encode_picture(), do_streamcopy(), do_video_out(), dv_extract_audio_info(), ea_read_packet(), encode_frame(), encode_picture_lossless(), encode_picture_ls(), ff_asf_parse_packet(), ff_id3v2_parse_apic(), ff_mov_add_hinted_packet(), ff_mov_write_packet(), ff_MPV_encode_picture(), ff_rm_parse_packet(), ff_rm_retrieve_cache(), ff_subtitles_queue_insert(), ffm_read_packet(), ffm_write_packet(), flashsv2_encode_frame(), flashsv_decode_frame(), flashsv_encode_frame(), flv_data_packet(), flv_read_packet(), flv_write_packet(), framecrc_write_packet(), get_attachment(), get_needed_flags(), gif_encode_frame(), gif_read_packet(), h263_handle_packet(), hls_read_packet(), hls_write_packet(), http_prepare_data(), idcin_read_packet(), iff_read_packet(), img_read_packet(), ism_write_packet(), libopenjpeg_encode_frame(), libschroedinger_encode_frame(), lmlm4_read_packet(), lvf_read_packet(), lxf_read_packet(), main(), matroska_parse_block(), mkv_write_packet(), mkv_write_packet_internal(), modplug_read_packet(), mov_create_chapter_track(), mov_create_timecode_track(), mov_parse_vc1_frame(), mov_read_covr(), mov_read_packet(), mov_write_single_packet(), mpeg_mux_write_packet(), mpegts_write_flush(), mpegts_write_packet_internal(), msnwc_tcp_read_packet(), mv_read_packet(), nsv_read_chunk(), nut_read_packet(), nut_write_packet(), nuv_packet(), ogg_read_packet(), ogg_read_timestamp(), ogg_validate_keyframe(), ogg_write_packet(), ogm_packet(), old_dirac_gptopts(), pam_encode_frame(), parse_packet(), parse_picture(), pcx_encode_frame(), pkt_dump_internal(), pnm_encode_frame(), prores_encode_frame(), put_payload_header(), qt_rtp_parse_packet(), qtrle_encode_frame(), raw_encode(), read_frame(), read_frame_internal(), read_packet(), rm_write_audio(), rm_write_video(), roq_encode_frame(), rpl_read_packet(), search_hi_lo_keyframes(), seek_frame_generic(), seg_write_packet(), show_packet(), siff_read_packet(), smush_read_packet(), Stagefright_decode_frame(), storeframe(), sunrast_encode_frame(), svq1_encode_frame(), targa_encode_frame(), theora_gptopts(), tmv_read_packet(), utvideo_encode_frame(), v308_encode_frame(), v408_encode_frame(), v410_encode_frame(), vc1t_read_packet(), vc1test_write_packet(), vid_read_packet(), write_frame(), write_timestamp(), write_video_frame(), X264_frame(), XAVS_frame(), xbm_encode_frame(), xface_encode_frame(), xmv_fetch_video_packet(), xvid_encode_frame(), xwd_encode_frame(), y41p_encode_frame(), yop_read_packet(), yuv4_encode_frame(), and zerocodec_decode_frame().

The packet content is corrupted.

Definition at line 1085 of file avcodec.h.

Referenced by aiff_read_packet(), apc_read_packet(), av_get_packet(), ff_pcm_read_packet(), ff_read_packet(), handle_packet(), mp3_read_packet(), new_pes_packet(), read_packet(), sol_read_packet(), vorbis_packet(), and vp8_handle_packet().

Enumerator:

AV_PKT_DATA_PALETTE

AV_PKT_DATA_NEW_EXTRADATA

AV_PKT_DATA_PARAM_CHANGE

An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:

u32le param_flags

if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT)

s32le channel_count

if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT)

u64le channel_layout

if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE)

s32le sample_rate

if (param_flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS)

s32le width

s32le height

AV_PKT_DATA_H263_MB_INFO

An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of structures with info about macroblocks relevant to splitting the packet into smaller packets on macroblock edges (e.g.

as for RFC 2190). That is, it does not necessarily contain info about all macroblocks, as long as the distance between macroblocks in the info is smaller than the target payload size. Each MB info structure is 12 bytes, and is laid out as follows:

u32le bit offset from the start of the packet

u8 current quantizer at the start of the macroblock

u8 GOB number

u16le macroblock address within the GOB

u8 horizontal MV predictor

u8 vertical MV predictor

u8 horizontal MV predictor for block number 3

u8 vertical MV predictor for block number 3

AV_PKT_DATA_SKIP_SAMPLES

Recommmends skipping the specified number of samples.

u32le number of samples to skip from start of this packet

u32le number of samples to skip from end of this packet

u8 reason for start skip

u8 reason for end skip (0=padding silence, 1=convergence)

AV_PKT_DATA_JP_DUALMONO

An AV_PKT_DATA_JP_DUALMONO side data packet indicates that the packet may contain "dual mono" audio specific to Japanese DTV and if it is true, recommends only the selected channel to be used.

u8 selected channels (0=mail/left, 1=sub/right, 2=both)

AV_PKT_DATA_STRINGS_METADATA

A list of zero terminated key/value strings.

There is no end marker for the list, so it is required to rely on the side data size to stop.

AV_PKT_DATA_SUBTITLE_POSITION

Subtitle event position.

u32le x1

u32le y1

u32le x2

u32le y2

AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL

Data found in BlockAdditional element of matroska container.

There is no end marker for the data, so it is required to rely on the side data size to recognize the end. 8 byte id (as found in BlockAddId) followed by data.

Definition at line 910 of file avcodec.h.

Enumerator:

AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT

AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT

AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE

AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS

Definition at line 1087 of file avcodec.h.

Default packet destructor.

Definition at line 39 of file avpacket.c.

Referenced by av_new_packet(), av_packet_merge_side_data(), avcodec_encode_video2(), copy_packet_data(), dshow_read_close(), ff_id3v2_parse_apic(), ff_rtp_finalize_packet(), ff_subtitles_queue_clean(), iec61883_parse_queue_dv(), mkv_write_trailer(), new_pes_packet(), parse_picture(), qt_rtp_parse_packet(), read_packet(), vfw_read_close(), and write_frame().

Initialize optional fields of a packet with default values.

Note, this does not touch the data and size members, which have to be initialized separately.

Parameters

pkt packet

Examples:

doc/examples/decoding_encoding.c, doc/examples/demuxing.c, and doc/examples/muxing.c.

Definition at line 46 of file avpacket.c.

Referenced by audio_decode_example(), audio_encode_example(), av_new_packet(), avcodec_encode_audio2(), avcodec_encode_video2(), avformat_find_stream_info(), avi_write_packet(), avpriv_dv_produce_packet(), dc1394_read_common(), do_audio_out(), do_streamcopy(), do_subtitle_out(), do_video_out(), dv_extract_audio_info(), encode_frame(), ff_alloc_packet2(), ff_id3v2_parse_apic(), ff_interleave_packet_per_dts(), ff_mov_add_hinted_packet(), ff_read_packet(), ff_rtp_finalize_packet(), flush_encoders(), main(), mkv_write_header(), mov_write_subtitle_end_packet(), movie_push_frame(), mpegts_get_dts(), mpegts_write_packet_internal(), mxf_interleave_get_packet(), new_pes_packet(), output_packet(), parse_packet(), parse_picture(), qt_rtp_parse_packet(), read_frame_internal(), read_packets(), read_thread(), reset_packet(), sp5x_decode_frame(), v4l2_read_packet(), video_decode_example(), video_encode_example(), wc3_read_header(), worker(), write_audio_frame(), write_video_frame(), and x11grab_read_packet().

Allocate the payload of a packet and initialize its fields with default values.

Parameters

pkt packet

size wanted payload size

Returns

0 if OK, AVERROR_xxx otherwise

Definition at line 60 of file avpacket.c.

Referenced by aac_parse_packet(), amr_handle_packet(), amr_read_packet(), ape_read_packet(), audio_read_packet(), av_get_packet(), av_grow_packet(), avisynth_read_packet(), avs_read_video_packet(), bmv_read_packet(), callback(), cdxl_read_packet(), cin_read_packet(), decode_frame(), dxa_read_packet(), fbdev_read_packet(), ff_alloc_packet2(), ff_asf_parse_packet(), ff_h263_handle_packet(), ff_interleave_new_audio_packet(), ff_raw_read_partial_packet(), ff_rm_retrieve_cache(), ff_spdif_read_packet(), ff_subtitles_queue_insert(), ffm_read_packet(), film_read_packet(), fourxm_read_packet(), g723_1_read_packet(), grab_read_packet(), h264_handle_packet(), iff_read_packet(), ilbc_read_packet(), img_read_packet(), latm_parse_packet(), lavfi_read_packet(), load_ipmovie_packet(), lxf_read_packet(), matroska_parse_frame(), matroska_parse_rm_audio(), mmap_read_frame(), modplug_read_packet(), mpc_read_packet(), mpeg_parse_packet(), mpegts_raw_read_packet(), nut_read_packet(), nuv_packet(), ogg_read_packet(), pulse_read_packet(), qdm2_restore_block(), qt_rtp_parse_packet(), read_frame(), read_packet(), recode_subtitle(), return_stored_frame(), rm_assemble_video_frame(), rm_read_audio_stream_info(), roq_read_packet(), rtp_parse_packet_internal(), sbg_read_packet(), seq_read_packet(), siff_read_packet(), smacker_read_packet(), store_packet(), str_read_packet(), supply_new_packets(), swf_read_packet(), videostream_cb(), vmd_read_packet(), vqf_read_packet(), wsaud_read_packet(), wv_read_packet(), xiph_handle_packet(), and yop_read_packet().

Reduce packet size, correctly zeroing padding.

Parameters

pkt packet

size new size

Definition at line 79 of file avpacket.c.

Referenced by av_append_packet(), av_get_packet(), cdxl_read_packet(), cin_read_packet(), ff_asf_parse_packet(), ff_raw_read_partial_packet(), libopus_encode(), mxf_decrypt_triplet(), mxf_get_d10_aes3_packet(), nuv_packet(), and yop_read_packet().

Increase packet size, correctly zeroing padding.

Parameters

pkt packet

grow_by number of bytes by which to increase the size of the packet

Definition at line 87 of file avpacket.c.

Referenced by av_append_packet(), ff_subtitles_queue_insert(), and matroska_merge_packets().

Warning

This is a hack - the packet memory allocation stuff is broken. The packet is allocated if it was not really allocated.

Definition at line 155 of file avpacket.c.

Referenced by av_read_frame(), avcodec_encode_audio2(), avcodec_encode_video2(), avformat_find_stream_info(), ff_interleave_add_packet(), packet_queue_put(), parse_packet(), tee_write_packet(), and worker().

Copy packet, including contents.

Returns

0 on success, negative AVERROR on fail

Definition at line 166 of file avpacket.c.

Referenced by aiff_write_packet(), tee_write_packet(), and write_packet().

Free a packet.

Parameters

pkt packet to free

Examples:

doc/examples/decoding_encoding.c, doc/examples/demuxing.c, doc/examples/filtering_audio.c, and doc/examples/filtering_video.c.

Definition at line 172 of file avpacket.c.

Referenced by adx_read_packet(), aiff_write_trailer(), amr_read_packet(), asf_read_header(), asf_read_picture(), asf_read_pts(), asf_reset_header(), asfrtp_parse_packet(), audio_decode_frame(), audio_encode_example(), audio_read_packet(), av_get_packet(), av_interleaved_write_frame(), av_packet_merge_side_data(), av_write_trailer(), avcodec_encode_audio2(), avcodec_encode_video2(), avi_read_close(), avs_read_video_packet(), cdxl_read_packet(), cin_read_packet(), dfa_read_packet(), do_audio_out(), do_video_out(), dxa_read_packet(), ea_read_packet(), encode_frame(), estimate_timings_from_pts(), extract_mpeg4_header(), ff_asf_parse_packet(), ff_free_stream(), ff_raw_read_partial_packet(), ff_read_packet(), ff_rm_free_rmstream(), ff_spdif_read_packet(), ffm_read_packet(), fourxm_read_packet(), free_packet_buffer(), free_packet_list(), free_pkt_fifo(), free_variant_list(), g723_1_read_packet(), gsm_read_packet(), hls_read_seek(), http_prepare_data(), idcin_read_packet(), ilbc_read_packet(), img_read_packet(), interleave_packet(), load_ipmovie_packet(), lxf_read_packet(), main(), matroska_clear_queue(), matroska_merge_packets(), modplug_read_packet(), mov_write_subtitle_end_packet(), movie_push_frame(), mp3_queue_flush(), mpc_read_packet(), mpc_read_seek(), mpegts_get_dts(), mpegts_raw_read_packet(), mpegts_read_packet(), mxf_interleave_get_packet(), nc_read_packet(), nsv_read_close(), nuv_packet(), packet_queue_flush(), packet_queue_put(), parse_packet(), process_input(), pulse_read_packet(), qt_rtp_parse_packet(), read_frame_internal(), read_packet(), read_packets(), read_thread(), recode_subtitle(), rl2_read_packet(), rm_assemble_video_frame(), rm_read_packet(), rpl_read_packet(), sap_fetch_packet(), search_hi_lo_keyframes(), seek_frame_generic(), seek_subtitle(), str_read_close(), str_read_packet(), stream_component_close(), subtitle_thread(), thp_read_packet(), video_encode_example(), video_thread(), vivo_read_packet(), vmd_read_packet(), vqf_read_packet(), wc3_read_close(), write_frame(), write_trailer(), wv_read_packet(), wv_read_seek(), xiph_handle_packet(), xvid_encode_frame(), yop_read_close(), yop_read_packet(), and yop_read_seek().

Allocate new information of a packet.

Parameters

pkt packet

type side information type

size side information size

Returns

pointer to fresh allocated data or NULL otherwise

Definition at line 189 of file avpacket.c.

Referenced by av_read_frame(), ff_add_param_change(), ff_asf_parse_packet(), ff_MPV_encode_picture(), flv_read_packet(), idcin_read_packet(), lavfi_read_packet(), load_ipmovie_packet(), matroska_parse_frame(), mov_read_packet(), read_frame(), srt_read_header(), and swf_read_packet().

Shrink the already allocated side data buffer.

Parameters

pkt packet

type side information type

size new side information size

Returns

0 on success, < 0 on failure

Definition at line 307 of file avpacket.c.

Referenced by ff_MPV_encode_picture().

Get side information from packet.

Parameters

pkt packet

type desired side information type

size pointer for side information size to store (optional)

Returns

pointer to data if present or NULL otherwise

Definition at line 214 of file avpacket.c.

Referenced by aac_decode_frame(), aac_decode_frame_int(), add_metadata_from_side_data(), apply_param_change(), avcodec_decode_audio4(), cinepak_decode_frame(), decode_frame(), decode_tag(), idcin_decode_frame(), ipvideo_decode_frame(), msrle_decode_frame(), msvideo1_decode_frame(), qtrle_decode_frame(), raw_decode(), rtp_write_packet(), smc_decode_frame(), srt_decode_frame(), and srt_write_packet().

Definition at line 231 of file avpacket.c.

Referenced by ff_read_packet(), and split_write_packet().

Definition at line 265 of file avpacket.c.

Referenced by avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), and split_write_packet().