22 #ifndef AVCODEC_OPTIONS_TABLE_H
23 #define AVCODEC_OPTIONS_TABLE_H
28 #include "libavutil/opt.h"
32 #define OFFSET(x) offsetof(AVCodecContext,x)
33 #define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C
35 #define V AV_OPT_FLAG_VIDEO_PARAM
36 #define A AV_OPT_FLAG_AUDIO_PARAM
37 #define S AV_OPT_FLAG_SUBTITLE_PARAM
38 #define E AV_OPT_FLAG_ENCODING_PARAM
39 #define D AV_OPT_FLAG_DECODING_PARAM
41 #define AV_CODEC_DEFAULT_BITRATE 200*1000
46 {
"bt",
"Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far "
47 "ratecontrol is willing to deviate from the target average bitrate value. This is not related "
48 "to minimum/maximum bitrate. Lowering tolerance too much has an adverse effect on quality.",
57 {
"mv0",
"always try a mb with mv=<0,0>", 0,
AV_OPT_TYPE_CONST, {.i64 =
CODEC_FLAG_MV0 }, INT_MIN, INT_MAX,
V|
E,
"flags"},
83 {
"esa",
"esa motion estimation (alias for full)", 0,
AV_OPT_TYPE_CONST, {.i64 =
ME_FULL }, INT_MIN, INT_MAX,
V|
E,
"me_method" },
85 {
"dia",
"diamond motion estimation (alias for EPZS)", 0,
AV_OPT_TYPE_CONST, {.i64 =
ME_EPZS }, INT_MIN, INT_MAX,
V|
E,
"me_method" },
94 {
"g",
"set the group of picture (GOP) size",
OFFSET(gop_size),
AV_OPT_TYPE_INT, {.i64 = 12 }, INT_MIN, INT_MAX,
V|
E},
101 {
"qcomp",
"video quantizer scale compression (VBR). Constant of ratecontrol equation. "
102 "Recommended range for default rc_eq: 0.0-1.0",
107 {
"qdiff",
"maximum difference between the quantizer scales (VBR)",
OFFSET(max_qdiff),
AV_OPT_TYPE_INT, {.i64 = 3 }, INT_MIN, INT_MAX,
V|
E},
109 {
"b_qfactor",
"QP factor between P- and B-frames",
OFFSET(b_quant_factor),
AV_OPT_TYPE_FLOAT, {.dbl = 1.25 }, -FLT_MAX, FLT_MAX,
V|
E},
111 {
"b_strategy",
"strategy to choose between I/P/B-frames",
OFFSET(b_frame_strategy),
AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX,
V|
E},
138 {
"ms",
"work around various bugs in Microsoft's broken decoders", 0,
AV_OPT_TYPE_CONST, {.i64 =
FF_BUG_MS }, INT_MIN, INT_MAX,
V|
D,
"bug"},
146 {
"b_qoffset",
"QP offset between P- and B-frames",
OFFSET(b_quant_offset),
AV_OPT_TYPE_FLOAT, {.dbl = 1.25 }, -FLT_MAX, FLT_MAX,
V|
E},
152 {
"careful",
"consider things that violate the spec, are fast to check and have not been seen in the wild as errors", 0,
AV_OPT_TYPE_CONST, {.i64 =
AV_EF_CAREFUL }, INT_MIN, INT_MAX,
A|
V|
D,
"err_detect"},
158 {
"qsquish",
"how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)",
OFFSET(rc_qsquish),
AV_OPT_TYPE_FLOAT, {.dbl =
DEFAULT }, 0, 99,
V|
E},
162 {
"rc_eq",
"Set rate control equation. When computing the expression, besides the standard functions "
163 "defined in the section 'Expression Evaluation', the following functions are available: "
164 "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv "
165 "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.",
167 {
"maxrate",
"Set maximum bitrate tolerance (in bits/s). Requires bufsize to be set.",
OFFSET(rc_max_rate),
AV_OPT_TYPE_INT, {.i64 =
DEFAULT }, INT_MIN, INT_MAX,
V|
A|
E},
168 {
"minrate",
"Set minimum bitrate tolerance (in bits/s). Most useful in setting up a CBR encode. It is of little use otherwise.",
171 {
"rc_buf_aggressivity",
"currently useless",
OFFSET(rc_buffer_aggressivity),
AV_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX,
V|
E},
172 {
"i_qfactor",
"QP factor between P- and I-frames",
OFFSET(i_quant_factor),
AV_OPT_TYPE_FLOAT, {.dbl = -0.8 }, -FLT_MAX, FLT_MAX,
V|
E},
173 {
"i_qoffset",
"QP offset between P- and I-frames",
OFFSET(i_quant_offset),
AV_OPT_TYPE_FLOAT, {.dbl = 0.0 }, -FLT_MAX, FLT_MAX,
V|
E},
182 {
"lumi_mask",
"compresses bright areas stronger than medium ones",
OFFSET(lumi_masking),
AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX,
V|
E},
183 {
"tcplx_mask",
"temporal complexity masking",
OFFSET(temporal_cplx_masking),
AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX,
V|
E},
184 {
"scplx_mask",
"spatial complexity masking",
OFFSET(spatial_cplx_masking),
AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX,
V|
E},
186 {
"dark_mask",
"compresses dark areas stronger than medium ones",
OFFSET(dark_masking),
AV_OPT_TYPE_FLOAT, {.dbl = 0 }, -FLT_MAX, FLT_MAX,
V|
E},
227 {
"vis_qp",
"visualize quantization parameter (QP), lower QP are tinted greener", 0,
AV_OPT_TYPE_CONST, {.i64 =
FF_DEBUG_VIS_QP }, INT_MIN, INT_MAX,
V|
D,
"debug"},
240 {
"last_pred",
"amount of motion predictors from the previous frame",
OFFSET(last_predictor_count),
AV_OPT_TYPE_INT, {.i64 =
DEFAULT }, INT_MIN, INT_MAX,
V|
E},
243 {
"sad",
"sum of absolute differences, fast (default)", 0,
AV_OPT_TYPE_CONST, {.i64 =
FF_CMP_SAD }, INT_MIN, INT_MAX,
V|
E,
"cmp_func"},
247 {
"psnr",
"sum of squared quantization errors (avoid, low quality)", 0,
AV_OPT_TYPE_CONST, {.i64 =
FF_CMP_PSNR }, INT_MIN, INT_MAX,
V|
E,
"cmp_func"},
249 {
"rd",
"rate distortion optimal, slow", 0,
AV_OPT_TYPE_CONST, {.i64 =
FF_CMP_RD }, INT_MIN, INT_MAX,
V|
E,
"cmp_func"},
254 #if CONFIG_SNOW_ENCODER
255 {
"w53",
"5/3 wavelet, only used in snow", 0,
AV_OPT_TYPE_CONST, {.i64 =
FF_CMP_W53 }, INT_MIN, INT_MAX,
V|
E,
"cmp_func"},
256 {
"w97",
"9/7 wavelet, only used in snow", 0,
AV_OPT_TYPE_CONST, {.i64 =
FF_CMP_W97 }, INT_MIN, INT_MAX,
V|
E,
"cmp_func"},
260 {
"pre_dia_size",
"diamond type & size for motion estimation pre-pass",
OFFSET(pre_dia_size),
AV_OPT_TYPE_INT, {.i64 =
DEFAULT }, INT_MIN, INT_MAX,
V|
E},
261 {
"subq",
"sub-pel motion estimation quality",
OFFSET(me_subpel_quality),
AV_OPT_TYPE_INT, {.i64 = 8 }, INT_MIN, INT_MAX,
V|
E},
285 {
"rc_init_occupancy",
"number of bits which should be loaded into the rc buffer before decoding starts",
OFFSET(rc_initial_buffer_occupancy),
AV_OPT_TYPE_INT, {.i64 =
DEFAULT }, INT_MIN, INT_MAX,
V|
E},
289 {
"auto",
"autodetect a suitable number of threads to use", 0,
AV_OPT_TYPE_CONST, {.i64 = 0 }, INT_MIN, INT_MAX,
V|
E|
D,
"threads"},
294 {
"skip_top",
"number of macroblock rows at the top which are skipped",
OFFSET(skip_top),
AV_OPT_TYPE_INT, {.i64 =
DEFAULT }, INT_MIN, INT_MAX,
V|
D},
295 {
"skip_bottom",
"number of macroblock rows at the bottom which are skipped",
OFFSET(skip_bottom),
AV_OPT_TYPE_INT, {.i64 =
DEFAULT }, INT_MIN, INT_MAX,
V|
D},
315 {
"lowres",
"decode at 1= 1/2, 2=1/4, 3=1/8 resolutions",
OFFSET(
lowres),
AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX,
V|
A|
D},
320 {
"border_mask",
"increase the quantizer for macroblocks close to borders",
OFFSET(border_masking),
AV_OPT_TYPE_FLOAT, {.dbl =
DEFAULT }, -FLT_MAX, FLT_MAX,
V|
E},
323 {
"mepc",
"motion estimation bitrate penalty compensation (1.0 = 256)",
OFFSET(me_penalty_compensation),
AV_OPT_TYPE_INT, {.i64 = 256 }, INT_MIN, INT_MAX,
V|
E},
335 {
"keyint_min",
"minimum interval between IDR-frames",
OFFSET(keyint_min),
AV_OPT_TYPE_INT, {.i64 = 25 }, INT_MIN, INT_MAX,
V|
E},
336 {
"refs",
"reference frames to consider for motion compensation",
OFFSET(refs),
AV_OPT_TYPE_INT, {.i64 = 1 }, INT_MIN, INT_MAX,
V|
E},
339 {
"sc_factor",
"multiplied by qscale for each frame and added to scene_change_score",
OFFSET(scenechange_factor),
AV_OPT_TYPE_INT, {.i64 = 6 }, 0, INT_MAX,
V|
E},
341 {
"b_sensitivity",
"adjust sensitivity of b_frame_strategy 1",
OFFSET(b_sensitivity),
AV_OPT_TYPE_INT, {.i64 = 40 }, 1, INT_MAX,
V|
E},
343 {
"min_prediction_order", NULL,
OFFSET(min_prediction_order),
AV_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX,
A|
E},
344 {
"max_prediction_order", NULL,
OFFSET(max_prediction_order),
AV_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX,
A|
E},
345 {
"timecode_frame_start",
"GOP timecode frame start number, in non-drop-frame format",
OFFSET(timecode_frame_start),
AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX,
V|
E},
346 #if FF_API_REQUEST_CHANNELS
360 {
"log_level_offset",
"set the log level offset",
OFFSET(log_level_offset),
AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX },
361 {
"slices",
"number of slices, used in parallelized encoding",
OFFSET(slices),
AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX,
V|
E},
377 {
"sub_charenc",
"set input text subtitles character encoding",
OFFSET(sub_charenc),
AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX,
S|
D},
#define FF_COMPLIANCE_VERY_STRICT
Strictly conform to an older more strict version of the spec or reference software.
#define FF_BUG_AUTODETECT
autodetection
#define FF_CODER_TYPE_DEFLATE
discard all frames except keyframes
#define FF_COMPLIANCE_STRICT
Strictly conform to all the things in the spec no matter what consequences.
static int error_concealment
#define FF_BUG_OLD_MSMPEG4
#define CODEC_FLAG2_FAST
Allow non spec compliant speedup tricks.
#define FF_BUG_AC_VLC
Will be removed, libavcodec can now handle these non-compliant files by default.
#define CODEC_FLAG_UNALIGNED
Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e...
#define CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
#define FF_PROFILE_AAC_SSR
#define CODEC_FLAG2_IGNORE_CROP
Discard cropping information from SPS.
Number of sample formats. DO NOT USE if linking dynamically.
#define FF_IDCT_SIMPLEMMX
#define CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
#define FF_IDCT_SIMPLEARMV6
enhanced predictive zonal search
#define FF_PROFILE_AAC_HE
static const AVOption avcodec_options[]
#define FF_IDCT_SIMPLEALPHA
#define FF_CODER_TYPE_RLE
static int bidir_refine(MpegEncContext *s, int mb_x, int mb_y)
#define FF_PROFILE_DTS_HD_HRA
#define CODEC_FLAG_QPEL
Use qpel MC.
#define CODEC_FLAG_INPUT_PRESERVED
The parent program guarantees that the input for B-frames containing streams is not written to for at...
#define FF_MB_DECISION_RD
rate distortion
#define CODEC_FLAG_PSNR
error[?] variables will be set during encoding.
static int workaround_bugs
#define FF_SUB_CHARENC_MODE_DO_NOTHING
do nothing (demuxer outputs a stream supposed to be already in UTF-8, or the codec is bitmap for inst...
enum AVColorTransferCharacteristic color_trc
#define CODEC_FLAG2_CHUNKS
Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries...
#define FF_IDCT_SIMPLEARM
#define CODEC_FLAG_GLOBAL_HEADER
Place global headers in extradata instead of every keyframe.
#define FF_IDCT_SIMPLEARMV5TE
enum AVColorRange color_range
#define FF_PROFILE_AAC_LD
#define FF_PROFILE_AAC_MAIN
#define FF_DEBUG_VIS_MV_B_BACK
#define CODEC_FLAG_MV0
Always try a MB with MV=<0,0>.
#define CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
#define FF_PROFILE_MPEG2_AAC_HE
#define CODEC_FLAG_AC_PRED
H.263 advanced intra coding / MPEG-4 AC prediction.
#define FF_COMPRESSION_DEFAULT
#define CODEC_FLAG_LOOP_FILTER
loop filter
static const uint8_t frame_size[4]
Libavcodec version macros.
no search, that is use 0,0 vector whenever one is needed
#define CODEC_FLAG_TRUNCATED
#define FF_COMPLIANCE_NORMAL
#define CODEC_FLAG_INTERLACED_ME
interlaced motion estimation
discard all bidirectional frames
#define FF_PROFILE_DTS_HD_MA
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
enum AVColorPrimaries color_primaries
#define CODEC_FLAG_QSCALE
Use fixed qscale.
#define FF_DEBUG_STARTCODE
#define AV_EF_BUFFER
detect improper bitstream length
transformed exhaustive search algorithm
Libavcodec external API header.
#define CODEC_FLAG_LOW_DELAY
Force low delay.
#define FF_SUB_CHARENC_MODE_PRE_DECODER
the AVPacket data needs to be recoded to UTF-8 before being fed to the decoder, requires iconv ...
#define AV_EF_CAREFUL
consider things that violate the spec, are fast to calculate and have not been seen in the wild as er...
#define FF_SUB_CHARENC_MODE_AUTOMATIC
libavcodec will select the mode itself
#define CODEC_FLAG2_SHOW_ALL
Show all frames before the first keyframe.
#define FF_DEBUG_DCT_COEFF
#define CODEC_FLAG_INTERLACED_DCT
Use interlaced DCT.
#define FF_CODER_TYPE_VLC
#define FF_PROFILE_UNKNOWN
#define FF_DEBUG_VIS_MV_P_FOR
#define AV_EF_AGGRESSIVE
consider things that a sane encoder should not do as an error
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
#define FF_DEBUG_VIS_MB_TYPE
#define AV_CODEC_DEFAULT_BITRATE
#define CODEC_FLAG_NORMALIZE_AQP
Normalize adaptive quantization.
#define FF_BUG_NO_PADDING
#define FF_PROFILE_MPEG2_AAC_LOW
static int intra_dc_precision
#define CODEC_FLAG2_LOCAL_HEADER
Place global headers at every keyframe instead of in extradata.
#define FF_THREAD_FRAME
Decode more than one frame at once.
#define AV_EF_EXPLODE
abort decoding on minor error detection
#define AV_EF_BITSTREAM
detect bitstream specification deviations
#define FF_PROFILE_AAC_LTP
#define FF_DEFAULT_QUANT_BIAS
#define FF_COMPLIANCE_UNOFFICIAL
Allow unofficial extensions.
#define FF_BUG_XVID_ILACE
#define FF_CODER_TYPE_RAW
discard useless packets like 0 size packets in avi
#define CODEC_FLAG_CLOSED_GOP
#define FF_MB_DECISION_BITS
chooses the one which needs the fewest bits
#define FF_DEBUG_PICT_INFO
#define FF_DEBUG_VIS_MV_B_FOR
#define FF_BUG_QPEL_CHROMA
discard all non reference
#define CODEC_FLAG_EMU_EDGE
Don't draw edges.
#define CODEC_FLAG_GRAY
Only decode/encode grayscale.
#define CODEC_FLAG2_NO_OUTPUT
Skip bitstream encoding.
#define FF_MB_DECISION_SIMPLE
uses mb_cmp
#define FF_BUG_DIRECT_BLOCKSIZE
#define FF_PROFILE_AAC_HE_V2
#define FF_PROFILE_AAC_LOW
#define CODEC_FLAG_GMC
Use GMC.
#define FF_PROFILE_DTS_ES
uneven multi-hexagon search
#define FF_QP2LAMBDA
factor to convert from H.263 QP to lambda
#define AV_EF_CRCCHECK
verify embedded CRCs
#define FF_PROFILE_DTS_96_24
#define FF_PROFILE_AAC_ELD
enum AVColorSpace colorspace
#define FF_BUG_QPEL_CHROMA2
#define AV_EF_COMPLIANT
consider all spec non compliancies as errors
#define CODEC_FLAG_4MV
4 MV per MB allowed / advanced prediction for H.263.
#define FF_BUG_HPEL_CHROMA
#define FF_IDCT_SIMPLENEON
#define FF_DEBUG_BITSTREAM
#define FF_BUG_MS
Work around various bugs in Microsoft's broken decoders.