Documentation for those will be generated automatically.tags/n0.11
| @@ -330,25 +330,7 @@ numerator and denominator of the aspect ratio. For example "4:3", | |||
| @item -vn (@emph{output}) | |||
| Disable video recording. | |||
| @item -bt @var{tolerance} | |||
| Set video bitrate tolerance (in bits, default 4000k). | |||
| Has a minimum value of: (target_bitrate/target_framerate). | |||
| In 1-pass mode, bitrate tolerance specifies how far ratecontrol is | |||
| willing to deviate from the target average bitrate value. This is | |||
| not related to min/max bitrate. Lowering tolerance too much has | |||
| an adverse effect on quality. | |||
| @item -maxrate @var{bitrate} | |||
| Set max video bitrate (in bit/s). | |||
| Requires -bufsize to be set. | |||
| @item -minrate @var{bitrate} | |||
| Set min video bitrate (in bit/s). | |||
| Most useful in setting up a CBR encode: | |||
| @example | |||
| avconv -i myfile.avi -b 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k out.m2v | |||
| @end example | |||
| It is of little use elsewise. | |||
| @item -bufsize @var{size} | |||
| Set video buffer verifier buffer size (in bits). | |||
| @item -vcodec @var{codec} (@emph{output}) | |||
| Set the video codec. This is an alias for @code{-codec:v}. | |||
| @item -same_quant | |||
| @@ -392,140 +374,11 @@ Set pixel format. Use @code{-pix_fmts} to show all the supported | |||
| pixel formats. | |||
| @item -sws_flags @var{flags} (@emph{input/output}) | |||
| Set SwScaler flags. | |||
| @item -g @var{gop_size} | |||
| Set the group of pictures size. | |||
| @item -vdt @var{n} | |||
| Discard threshold. | |||
| @item -qmin @var{q} | |||
| minimum video quantizer scale (VBR) | |||
| @item -qmax @var{q} | |||
| maximum video quantizer scale (VBR) | |||
| @item -qdiff @var{q} | |||
| maximum difference between the quantizer scales (VBR) | |||
| @item -qblur @var{blur} | |||
| video quantizer scale blur (VBR) (range 0.0 - 1.0) | |||
| @item -qcomp @var{compression} | |||
| video quantizer scale compression (VBR) (default 0.5). | |||
| Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0 | |||
| @item -lmin @var{lambda} | |||
| minimum video lagrange factor (VBR) | |||
| @item -lmax @var{lambda} | |||
| max video lagrange factor (VBR) | |||
| @item -mblmin @var{lambda} | |||
| minimum macroblock quantizer scale (VBR) | |||
| @item -mblmax @var{lambda} | |||
| maximum macroblock quantizer scale (VBR) | |||
| These four options (lmin, lmax, mblmin, mblmax) use 'lambda' units, | |||
| but you may use the QP2LAMBDA constant to easily convert from 'q' units: | |||
| @example | |||
| avconv -i src.ext -lmax 21*QP2LAMBDA dst.ext | |||
| @end example | |||
| @item -rc_init_cplx @var{complexity} | |||
| initial complexity for single pass encoding | |||
| @item -b_qfactor @var{factor} | |||
| qp factor between P- and B-frames | |||
| @item -i_qfactor @var{factor} | |||
| qp factor between P- and I-frames | |||
| @item -b_qoffset @var{offset} | |||
| qp offset between P- and B-frames | |||
| @item -i_qoffset @var{offset} | |||
| qp offset between P- and I-frames | |||
| @item -rc_eq @var{equation} | |||
| Set rate control equation (see section "Expression Evaluation") | |||
| (default = @code{tex^qComp}). | |||
| When computing the rate control equation expression, besides the | |||
| standard functions defined in the section "Expression Evaluation", the | |||
| following functions are available: | |||
| @table @var | |||
| @item bits2qp(bits) | |||
| @item qp2bits(qp) | |||
| @end table | |||
| and the following constants are available: | |||
| @table @var | |||
| @item iTex | |||
| @item pTex | |||
| @item tex | |||
| @item mv | |||
| @item fCode | |||
| @item iCount | |||
| @item mcVar | |||
| @item var | |||
| @item isI | |||
| @item isP | |||
| @item isB | |||
| @item avgQP | |||
| @item qComp | |||
| @item avgIITex | |||
| @item avgPITex | |||
| @item avgPPTex | |||
| @item avgBPTex | |||
| @item avgTex | |||
| @end table | |||
| @item -rc_override[:@var{stream_specifier}] @var{override} (@emph{output,per-stream}) | |||
| rate control override for specific intervals | |||
| @item -me_method @var{method} | |||
| Set motion estimation method to @var{method}. | |||
| Available methods are (from lowest to best quality): | |||
| @table @samp | |||
| @item zero | |||
| Try just the (0, 0) vector. | |||
| @item phods | |||
| @item log | |||
| @item x1 | |||
| @item hex | |||
| @item umh | |||
| @item epzs | |||
| (default method) | |||
| @item full | |||
| exhaustive search (slow and marginally better than epzs) | |||
| @end table | |||
| @item -er @var{n} | |||
| Set error resilience to @var{n}. | |||
| @table @samp | |||
| @item 1 | |||
| FF_ER_CAREFUL (default) | |||
| @item 2 | |||
| FF_ER_COMPLIANT | |||
| @item 3 | |||
| FF_ER_AGGRESSIVE | |||
| @item 4 | |||
| FF_ER_VERY_AGGRESSIVE | |||
| @end table | |||
| @item -ec @var{bit_mask} | |||
| Set error concealment to @var{bit_mask}. @var{bit_mask} is a bit mask of | |||
| the following values: | |||
| @table @samp | |||
| @item 1 | |||
| FF_EC_GUESS_MVS (default = enabled) | |||
| @item 2 | |||
| FF_EC_DEBLOCK (default = enabled) | |||
| @end table | |||
| @item -bf @var{frames} | |||
| Use 'frames' B-frames (supported for MPEG-1, MPEG-2 and MPEG-4). | |||
| @item -mbd @var{mode} | |||
| macroblock decision | |||
| @table @samp | |||
| @item 0 | |||
| FF_MB_DECISION_SIMPLE: Use mb_cmp (cannot change it yet in avconv). | |||
| @item 1 | |||
| FF_MB_DECISION_BITS: Choose the one which needs the fewest bits. | |||
| @item 2 | |||
| FF_MB_DECISION_RD: rate distortion | |||
| @end table | |||
| @item -bug @var{param} | |||
| Work around encoder bugs that are not auto-detected. | |||
| @item -strict @var{strictness} | |||
| How strictly to follow the standards. | |||
| @item -deinterlace | |||
| Deinterlace pictures. | |||
| @@ -586,28 +439,6 @@ of supported sample formats. | |||
| @table @option | |||
| @item -atag @var{fourcc/tag} (@emph{output}) | |||
| Force audio tag/fourcc. This is an alias for @code{-tag:a}. | |||
| @item -audio_service_type @var{type} | |||
| Set the type of service that the audio stream contains. | |||
| @table @option | |||
| @item ma | |||
| Main Audio Service (default) | |||
| @item ef | |||
| Effects | |||
| @item vi | |||
| Visually Impaired | |||
| @item hi | |||
| Hearing Impaired | |||
| @item di | |||
| Dialogue | |||
| @item co | |||
| Commentary | |||
| @item em | |||
| Emergency | |||
| @item vo | |||
| Voice Over | |||
| @item ka | |||
| Karaoke | |||
| @end table | |||
| @end table | |||
| @section Subtitle options: | |||
| @@ -739,12 +570,8 @@ Exit after avconv has been running for @var{duration} seconds. | |||
| Dump each input packet to stderr. | |||
| @item -hex (@emph{global}) | |||
| When dumping packets, also dump the payload. | |||
| @item -ps @var{size} | |||
| Set RTP payload size in bytes. | |||
| @item -re (@emph{input}) | |||
| Read input at native frame rate. Mainly used to simulate a grab device. | |||
| @item -threads @var{count} | |||
| Thread count. | |||
| @item -vsync @var{parameter} | |||
| Video sync method. | |||
| @@ -1034,6 +861,19 @@ avconv -i test1.avi -i test2.avi -map 0.3 -map 0.2 -map 0.1 -map 0.0 -c copy tes | |||
| The resulting output file @file{test12.avi} will contain first four streams from | |||
| the input file in reverse order. | |||
| @item | |||
| To force CBR video output: | |||
| @example | |||
| avconv -i myfile.avi -b 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k out.m2v | |||
| @end example | |||
| @item | |||
| The four options lmin, lmax, mblmin and mblmax use 'lambda' units, | |||
| but you may use the QP2LAMBDA constant to easily convert from 'q' units: | |||
| @example | |||
| avconv -i src.ext -lmax 21*QP2LAMBDA dst.ext | |||
| @end example | |||
| @end itemize | |||
| @c man end EXAMPLES | |||
| @@ -33,7 +33,10 @@ | |||
| static const AVOption options[]={ | |||
| {"b", "set bitrate (in bits/s)", OFFSET(bit_rate), AV_OPT_TYPE_INT, {.dbl = AV_CODEC_DEFAULT_BITRATE }, INT_MIN, INT_MAX, V|A|E}, | |||
| {"bt", "set video bitrate tolerance (in bits/s)", OFFSET(bit_rate_tolerance), AV_OPT_TYPE_INT, {.dbl = AV_CODEC_DEFAULT_BITRATE*20 }, 1, INT_MAX, V|E}, | |||
| {"bt", "Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far " | |||
| "ratecontrol is willing to deviate from the target average bitrate value. This is not related " | |||
| "to min/max bitrate. Lowering tolerance too much has an adverse effect on quality.", | |||
| OFFSET(bit_rate_tolerance), AV_OPT_TYPE_INT, {.dbl = AV_CODEC_DEFAULT_BITRATE*20 }, 1, INT_MAX, V|E}, | |||
| {"flags", NULL, OFFSET(flags), AV_OPT_TYPE_FLAGS, {.dbl = DEFAULT }, 0, UINT_MAX, V|A|E|D, "flags"}, | |||
| {"mv4", "use four motion vector by macroblock (mpeg4)", 0, AV_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_4MV }, INT_MIN, INT_MAX, V|E, "flags"}, | |||
| {"qpel", "use 1/4 pel motion compensation", 0, AV_OPT_TYPE_CONST, {.dbl = CODEC_FLAG_QPEL }, INT_MIN, INT_MAX, V|E, "flags"}, | |||
| @@ -91,7 +94,9 @@ static const AVOption options[]={ | |||
| {"frame_size", NULL, OFFSET(frame_size), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, A|E}, | |||
| {"frame_number", NULL, OFFSET(frame_number), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX}, | |||
| {"delay", NULL, OFFSET(delay), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX}, | |||
| {"qcomp", "video quantizer scale compression (VBR)", OFFSET(qcompress), AV_OPT_TYPE_FLOAT, {.dbl = 0.5 }, -FLT_MAX, FLT_MAX, V|E}, | |||
| {"qcomp", "video quantizer scale compression (VBR). Constant of ratecontrol equation. " | |||
| "Recommended range for default rc_eq: 0.0-1.0", | |||
| OFFSET(qcompress), AV_OPT_TYPE_FLOAT, {.dbl = 0.5 }, -FLT_MAX, FLT_MAX, V|E}, | |||
| {"qblur", "video quantizer scale blur (VBR)", OFFSET(qblur), AV_OPT_TYPE_FLOAT, {.dbl = 0.5 }, -1, FLT_MAX, V|E}, | |||
| {"qmin", "min video quantizer scale (VBR)", OFFSET(qmin), AV_OPT_TYPE_INT, {.dbl = 2 }, -1, 69, V|E}, | |||
| {"qmax", "max video quantizer scale (VBR)", OFFSET(qmax), AV_OPT_TYPE_INT, {.dbl = 31 }, -1, 69, V|E}, | |||
| @@ -153,9 +158,14 @@ static const AVOption options[]={ | |||
| {"rc_qmod_amp", "experimental quantizer modulation", OFFSET(rc_qmod_amp), AV_OPT_TYPE_FLOAT, {.dbl = DEFAULT }, -FLT_MAX, FLT_MAX, V|E}, | |||
| {"rc_qmod_freq", "experimental quantizer modulation", OFFSET(rc_qmod_freq), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|E}, | |||
| {"rc_override_count", NULL, OFFSET(rc_override_count), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX}, | |||
| {"rc_eq", "set rate control equation", OFFSET(rc_eq), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, V|E}, | |||
| {"maxrate", "set max bitrate tolerance (in bits/s)", OFFSET(rc_max_rate), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|A|E}, | |||
| {"minrate", "set min bitrate tolerance (in bits/s)", OFFSET(rc_min_rate), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|A|E}, | |||
| {"rc_eq", "Set rate control equation. When computing the expression, besides the standard functions " | |||
| "defined in the section 'Expression Evaluation', the following functions are available: " | |||
| "bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv " | |||
| "fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.", | |||
| OFFSET(rc_eq), AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, V|E}, | |||
| {"maxrate", "Set max bitrate tolerance (in bits/s). Requires bufsize to be set.", OFFSET(rc_max_rate), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|A|E}, | |||
| {"minrate", "Set min bitrate tolerance (in bits/s). Most useful in setting up a CBR encode. It is of little use elsewise.", | |||
| OFFSET(rc_min_rate), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, V|A|E}, | |||
| {"bufsize", "set ratecontrol buffer size (in bits)", OFFSET(rc_buffer_size), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX, A|V|E}, | |||
| {"rc_buf_aggressivity", "currently useless", OFFSET(rc_buffer_aggressivity), AV_OPT_TYPE_FLOAT, {.dbl = 1.0 }, -FLT_MAX, FLT_MAX, V|E}, | |||
| {"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}, | |||