2007/11/15を以て当ブログは更新を停止しました。
記事は全てこのままですが、基本的に内容はOut of dateとお考え下さい。
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ffmpegコマンドその２（らけった版）
リンク：http://raketta.blogzine.jp/blog/2007/02/ffmpeg_universa_30f8.html
名称：ffmpeg_SVN-r8028u（ユニバーサルバイナリ、x86Macでの動作未確認）
※各AVコデック固有と思しきオプションがフラットに並んでいる。Advanced Video options:を含め、重複もある。各規格・符号化理論・数学に精通してないと厳しい印象（携帯動画変換君のプリセットは2chの総当たり戦の成果）。
※手許で重視しているx264オプションのうち、(no)b_adapt、(no)bime、(no)dct_decimate、cqm相当品が見当たらない。
| オプション | 指定値 | 用途 | 説明 | メモ | -x264encopts |
| -b | <int> | E.VA. | set video bitrate (in bits/s) ビデオビットレートの指定 |
bitrate | |
| -bt | <int> | E.V.. | set video bitrate tolerance (in bits/s) | ||
| -flags | <flags> | EDVA. | |||
| mv4 | E.V.. | use four motion vector by macroblock (mpeg4) | |||
| obmc | E.V.. | use overlapped block motion compensation (h263+) オーバーラップド・マクロブロック補償 |
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| qpel | E.V.. | use 1/4 pel motion compensation 1/4ピクセル精度動き補償 |
|||
| loop | E.V.. | use loop filter ループフィルタ |
(no)deblock | ||
| gmc | E.V.. | use gmc グローバル動き補償 |
|||
| mv0 | E.V.. | always try a mb with mv=<0,0> | |||
| part | E.V.. | use data partitioning | |||
| gray | EDV.. | only decode/encode grayscale グレイスケールのエンコード/デコード |
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| psnr | E.V.. | error[?] variables will be set during encoding | ＊意味不明＊ 説明が間違いか、PSNRベースのレートコントロールなら無意味なハズだが？ | (no)psnr | |
| naq | E.V.. | normalize adaptive quantization 適応的量子化のノーマライズ |
|||
| ildct | E.V.. | use interlaced dct インターレース対応DCT |
|||
| low_delay | EDV.. | force low delay | |||
| alt | E.V.. | enable alternate scantable (mpeg2/mpeg4) | |||
| trell | E.V.. | use trellis quantization 適応量子化の一種 |
trellisは後でもういっこ出て来る | trellis | |
| bitexact | EDVAS | use only bitexact stuff (except (i)dct) | 携帯電話で必要（MPEG ExporterTNGブログ ）、うまくいくためのおまじないのようなもの（携帯動画変換君wiki）、なんらかの誤差を産む要素を完全に除外するデバッグ目的のもの（自分の印象） | ||
| aic | E.V.. | h263 advanced intra coding / mpeg4 ac prediction | |||
| umv | E.V.. | use unlimited motion vectors 無限モーションベクトル |
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| cbp | E.V.. | use rate distortion optimization for cbp cbpのrdo |
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| qprd | E.V.. | use rate distortion optimization for qp selection qp選択にrdoを使う |
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| aiv | E.V.. | h263 alternative inter vlc | |||
| slice | E.V.. | ||||
| ilme | E.V.. | interlaced motion estimation | |||
| scan_offset | E.V.. | will reserve space for svcd scan offset user data | |||
| cgop | E.V.. | closed gop クローズドGOP |
|||
| -me_method | <int> | E.V.. | set motion estimation method 動き予測の方式を指定 |
me | |
| -g | <int> | E.V.. | set the group of picture size GOPサイズの指定 |
||
| -cutoff | <int> | E..A. | set cutoff bandwidth | ||
| -frame_size | <int> | E..A. | |||
| -qcomp | <float> | E.V.. | video quantizer scale compression (VBR) 量子化スケーリングの圧縮 |
qcomp | |
| -qblur | <float> | E.V.. | video quantizer scale blur (VBR) 量子化値の変動幅調整（なだらかにしたり急激にしたり） |
qblur | |
| -qmin | <int> | E.V.. | min video quantizer scale (VBR) 最小量子化値 |
qp_min | |
| -qmax | <int> | E.V.. | max video quantizer scale (VBR) 最大量子化値 |
qp_max | |
| -qdiff | <int> | E.V.. | max difference between the quantizer scale (VBR) 量子化スケールの最大幅 |
qp_stepか？ | |
| -bf | <int> | E.V.. | use frames' B frames Bフレーム数 |
bframes | |
| -b_qfactor | <float> | E.V.. | qp factor between p and b frames PとBの量子化値の換算係数（比率） |
-b_qoffsetも参照 | pb_factor |
| -rc_strategy | <int> | E.V.. | ratecontrol method レートコントロールの方式 |
||
| -b_strategy | <int> | E.V.. | strategy to choose between I/P/B-frames I/P/B選択の方針 |
||
| -hurry_up | <int> | .DV.. | |||
| -bug | <flags> | .DV.. | workaround not auto detected encoder bugs 自動検出できないエンコーダのバグをなんとかする弥縫策 |
||
| autodetect | .DV.. | ||||
| old_msmpeg4 | .DV.. | some old lavc generated msmpeg4v3 files (no autodetection) | |||
| xvid_ilace | .DV.. | Xvid interlacing bug (autodetected if fourcc==XVIX) | |||
| ump4 | .DV.. | (autodetected if fourcc==UMP4) | |||
| no_padding | .DV.. | padding bug (autodetected) | |||
| amv | .DV.. | ||||
| ac_vlc | .DV.. | illegal vlc bug (autodetected per fourcc) | |||
| qpel_chroma | .DV.. | ||||
| std_qpel | .DV.. | old standard qpel (autodetected per fourcc/version) | |||
| qpel_chroma2 | .DV.. | ||||
| direct_blocksize | .DV.. | direct-qpel-blocksize bug (autodetected per fourcc/version) | |||
| edge | .DV.. | edge padding bug (autodetected per fourcc/version) | |||
| hpel_chroma | .DV.. | ||||
| dc_clip | .DV.. | ||||
| ms | .DV.. | workaround various bugs in microsofts broken decoders | |||
| -lelim | <int> | E.V.. | single coefficient elimination threshold for luminance (negative values also consider dc coefficient) | 所謂サイコビジュアルエンハンスメント | |
| -celim | <int> | E.V.. | single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) | 同上 | |
| -strict | <int> | .DVA. | how strictly to follow the standards どの程度規格を遵守するか |
||
| very | E.V.. | strictly conform to a older more strict version of the spec or reference software | |||
| strict | E.V.. | strictly conform to all the things in the spec no matter what consequences | |||
| normal | E.V.. | ||||
| inofficial | E.V.. | allow inofficial extensions 非公式な拡張を許容 |
|||
| experimental | E.V.. | allow non standarized experimental things 規格化されていない試験的機能を許容 |
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| -b_qoffset | <float> | E.V.. | qp offset between p and b frames PとBの量子化値のオフセット（量子化値） |
-b_qfactorも参照 | |
| -er | <int> | .DVA. | set error resilience strategy エラー対処方針 |
||
| careful | .DV.. | ||||
| compliant | .DV.. | ||||
| aggressive | .DV.. | ||||
| very_aggressive | .DV.. | ||||
| -mpeg_quant | <int> | E.V.. | use MPEG quantizers instead of H.263 | ||
| -qsquish | <float> | E.V.. | how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) | ||
| -rc_qmod_amp | <float> | E.V.. | experimental quantizer modulation | ||
| -rc_qmod_freq | <int> | E.V.. | experimental quantizer modulation | ||
| -rc_eq | <string> | E.V.. | set rate control equation | *x264cliのrceq | |
| -maxrate | <int> | E.V.. | set max video bitrate tolerance (in bits/s) | ||
| -minrate | <int> | E.V.. | set min video bitrate tolerance (in bits/s) | ||
| -bufsize | <int> | E.V.. | set ratecontrol buffer size (in bits) | vbv_bufsizeか？ | |
| -rc_buf_aggressivity | <float> | E.V.. | currently useless | ||
| -i_qfactor | <float> | E.V.. | qp factor between p and i frames I-P間の量子化値換算係数（比率） |
ip_factor | |
| -i_qoffset | <float> | E.V.. | qp offset between p and i frames I-P間の量子化値オフセット（量子化値） |
||
| -rc_init_cplx | <float> | E.V.. | initial complexity for 1-pass encoding | ||
| -dct | <int> | E.V.. | DCT algorithm DCT計算方式 |
理想的には無限小数計算 | |
| auto | E.V.. | autoselect a good one (default) | |||
| fastint | E.V.. | fast integer 高速な整数計算 |
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| int | E.V.. | accurate integer 正確な整数計算 |
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| mmx | E.V.. | ||||
| mlib | E.V.. | ||||
| altivec | E.V.. | ||||
| faan | E.V.. | floating point AAN DCT | |||
| -lumi_mask | <float> | E.V.. | compresses bright areas stronger than medium ones | 所謂サイコビジュアルエンハンスメント | |
| -tcplx_mask | <float> | E.V.. | temporal complexity masking | ||
| -scplx_mask | <float> | E.V.. | spatial complexity masking | ||
| -p_mask | <float> | E.V.. | inter masking | ||
| -dark_mask | <float> | E.V.. | compresses dark areas stronger than medium ones | 所謂サイコビジュアルエンハンスメント | |
| -idct | <int> | EDV.. | select IDCT implementation | イントラDCT? | |
| auto | EDV.. | ||||
| int | EDV.. | ||||
| simple | EDV.. | ||||
| simplemmx | EDV.. | ||||
| libmpeg2mmx | EDV.. | ||||
| ps2 | EDV.. | プレステ２？ | |||
| mlib | EDV.. | ||||
| arm | EDV.. | ||||
| altivec | EDV.. | ||||
| sh4 | EDV.. | ドリキャス？ | |||
| simplearm | EDV.. | ||||
| simplearmv5te | EDV.. | ||||
| h264 | EDV.. | ||||
| vp3 | EDV.. | ||||
| ipp | EDV.. | ||||
| xvidmmx | EDV.. | ||||
| -ec | <flags> | .DV.. | set error concealment strategy エラー封じ込め方針 |
||
| guess_mvs | .DV.. | iterative motion vector (MV) search (slow) | |||
| deblock | .DV.. | use strong deblock filter for damaged MBs | |||
| -pred | <int> | E.V.. | prediction method | ||
| left | E.V.. | ||||
| plane | E.V.. | ||||
| median | E.V.. | ||||
| -aspect | <rational> | E.V.. | sample aspect ratio サンプルアスペクトレシオ |
*x264cliの―sar？ | |
| -debug | <flags> | EDVAS | print specific debug info | ffdshowのフレームタイプ視覚化はこれがベースか？ | |
| pict | .DV.. | picture info | |||
| rc | E.V.. | rate control | |||
| bitstream | .DV.. | ||||
| mb_type | .DV.. | macroblock (MB) type | |||
| qp | .DV.. | per-block quantization parameter (QP) | |||
| mv | .DV.. | motion vector | |||
| dct_coeff | .DV.. | ||||
| skip | .DV.. | ||||
| startcode | .DV.. | ||||
| pts | .DV.. | ||||
| er | .DV.. | error resilience | |||
| mmco | .DV.. | memory management control operations (H.264) | |||
| bugs | .DV.. | ||||
| vis_qp | .DV.. | visualize quantization parameter (QP), lower QP are tinted greener | |||
| vis_mb_type | .DV.. | visualize block types | |||
| -vismv | <int> | .DV.. | visualize motion vectors (MVs) | ffdshowのフレームタイプ視覚化はこれがベースか？ | |
| pf | .DV.. | forward predicted MVs of P-frames | |||
| bf | .DV.. | forward predicted MVs of B-frames | |||
| bb | .DV.. | backward predicted MVs of B-frames | |||
| -mb_qmin | <int> | E.V.. | obsolete, use qmin旧式 | ||
| -mb_qmax | <int> | E.V.. | obsolete, use qmax旧式 | ||
| -cmp | <int> | E.V.. | full pel me compare function フルピクセル精度の動き比較関数 |
指定値は様々な値の算出に使う数学的な計算方法と思われ | |
| sad | E.V.. | sum of absolute differences, fast (default) | |||
| sse | E.V.. | sum of squared errors | |||
| satd | E.V.. | sum of absolute Hadamard transformed differences | |||
| dct | E.V.. | sum of absolute DCT transformed differences | |||
| psnr | E.V.. | sum of squared quantization errors (avoid, low quality) | |||
| bit | E.V.. | number of bits needed for the block | |||
| rd | E.V.. | rate distortion optimal, slow | |||
| zero | E.V.. | 0 | |||
| vsad | E.V.. | sum of absolute vertical differences | |||
| vsse | E.V.. | sum of squared vertical differences | |||
| nsse | E.V.. | noise preserving sum of squared differences | |||
| w53 | E.V.. | 5/3 wavelet, only used in snow | Snow | ||
| w97 | E.V.. | 9/7 wavelet, only used in snow | Snow | ||
| dctmax | E.V.. | ||||
| chroma | E.V.. | ||||
| -subcmp | <int> | E.V.. | sub pel me compare function ハーフピクセル精度の動き比較関数 |
||
| sad | E.V.. | sum of absolute differences, fast (default) | |||
| sse | E.V.. | sum of squared errors | |||
| satd | E.V.. | sum of absolute Hadamard transformed differences | |||
| dct | E.V.. | sum of absolute DCT transformed differences | |||
| psnr | E.V.. | sum of squared quantization errors (avoid, low quality) | |||
| bit | E.V.. | number of bits needed for the block | |||
| rd | E.V.. | rate distortion optimal, slow | |||
| zero | E.V.. | 0 | |||
| vsad | E.V.. | sum of absolute vertical differences | |||
| vsse | E.V.. | sum of squared vertical differences | |||
| nsse | E.V.. | noise preserving sum of squared differences | |||
| w53 | E.V.. | 5/3 wavelet, only used in snow | |||
| w97 | E.V.. | 9/7 wavelet, only used in snow | |||
| dctmax | E.V.. | ||||
| chroma | E.V.. | ||||
| -mbcmp | <int> | E.V.. | macroblock compare function フルピクセルマクロブロックの比較関数 |
||
| sad | E.V.. | sum of absolute differences, fast (default) | |||
| sse | E.V.. | sum of squared errors | |||
| satd | E.V.. | sum of absolute Hadamard transformed differences | |||
| dct | E.V.. | sum of absolute DCT transformed differences | |||
| psnr | E.V.. | sum of squared quantization errors (avoid, low quality) | |||
| bit | E.V.. | number of bits needed for the block | |||
| rd | E.V.. | rate distortion optimal, slow | |||
| zero | E.V.. | 0 | |||
| vsad | E.V.. | sum of absolute vertical differences | |||
| vsse | E.V.. | sum of squared vertical differences | |||
| nsse | E.V.. | noise preserving sum of squared differences | |||
| w53 | E.V.. | 5/3 wavelet, only used in snow | |||
| w97 | E.V.. | 9/7 wavelet, only used in snow | |||
| dctmax | E.V.. | ||||
| chroma | E.V.. | ||||
| -ildctcmp | <int> | E.V.. | interlaced dct compare function インターレースドDCTの比較関数 |
||
| sad | E.V.. | sum of absolute differences, fast (default) | |||
| sse | E.V.. | sum of squared errors | |||
| satd | E.V.. | sum of absolute Hadamard transformed differences | |||
| dct | E.V.. | sum of absolute DCT transformed differences | |||
| psnr | E.V.. | sum of squared quantization errors (avoid, low quality) | |||
| bit | E.V.. | number of bits needed for the block | |||
| rd | E.V.. | rate distortion optimal, slow | |||
| zero | E.V.. | 0 | |||
| vsad | E.V.. | sum of absolute vertical differences | |||
| vsse | E.V.. | sum of squared vertical differences | |||
| nsse | E.V.. | noise preserving sum of squared differences | |||
| w53 | E.V.. | 5/3 wavelet, only used in snow | |||
| w97 | E.V.. | 9/7 wavelet, only used in snow | |||
| dctmax | E.V.. | ||||
| chroma | E.V.. | ||||
| -dia_size | <int> | E.V.. | diamond type & size for motion estimation | ||
| -last_pred | <int> | E.V.. | amount of motion predictors from the previous frame | ||
| -preme | <int> | E.V.. | pre motion estimation | ||
| -precmp | <int> | E.V.. | pre motion estimation compare function | ||
| sad | E.V.. | sum of absolute differences, fast (default) | |||
| sse | E.V.. | sum of squared errors | |||
| satd | E.V.. | sum of absolute Hadamard transformed differences | |||
| dct | E.V.. | sum of absolute DCT transformed differences | |||
| psnr | E.V.. | sum of squared quantization errors (avoid, low quality) | |||
| bit | E.V.. | number of bits needed for the block | |||
| rd | E.V.. | rate distortion optimal, slow | |||
| zero | E.V.. | 0 | |||
| vsad | E.V.. | sum of absolute vertical differences | |||
| vsse | E.V.. | sum of squared vertical differences | |||
| nsse | E.V.. | noise preserving sum of squared differences | |||
| w53 | E.V.. | 5/3 wavelet, only used in snow | |||
| w97 | E.V.. | 9/7 wavelet, only used in snow | |||
| dctmax | E.V.. | ||||
| chroma | E.V.. | ||||
| -pre_dia_size | <int> | E.V.. | diamond type & size for motion estimation pre-pass | ||
| -subq | <int> | E.V.. | sub pel motion estimation quality サブペル動き予測の精度 |
サブペルはフルピクセルより小さい精度で行う計算（ハーフペルとqpel）の総称っぽい | subq |
| -me_range | <int> | E.V.. | limit motion vectors range (1023 for DivX player) モーションベクトルの範囲 |
me_range | |
| -ibias | <int> | E.V.. | intra quant bias | ||
| -pbias | <int> | E.V.. | inter quant bias | ||
| -coder | <int> | E.V.. | |||
| vlc | E.V.. | variable length coder / huffman coder | nocabac | ||
| ac | E.V.. | arithmetic coder | cabac | ||
| -context | <int> | E.V.. | context model | ||
| -mbd | <int> | E.V.. | macroblock decision algorithm (high quality mode) | ||
| simple | E.V.. | use mbcmp (default) | |||
| bits | E.V.. | use fewest bits | |||
| rd | E.V.. | use best rate distortion | |||
| -sc_threshold | <int> | E.V.. | scene change threshold シーンチェンジ判定の閾値 |
scenecut | |
| -lmin | <int> | E.V.. | min lagrange factor (VBR) | ラグランジュ係数？ | |
| -lmax | <int> | E.V.. | max lagrange factor (VBR) | ||
| -nr | <int> | E.V.. | noise reduction ノイズリダクション |
nr | |
| -rc_init_occupancy | <int> | E.V.. | number of bits which should be loaded into the rc buffer before decoding starts デコード開始前にレートコントロールバッファを満たすべきbitの数 |
||
| -inter_threshold | <int> | E.V.. | |||
| -flags2 | <flags> | EDVA. | |||
| fast | E.V.. | allow non spec compliant speedup tricks | |||
| sgop | E.V.. | strictly enforce gop size | |||
| noout | E.V.. | skip bitstream encoding | |||
| local_header | E.V.. | place global headers at every keyframe instead of in extradata | noglobal_headerか？ | ||
| bpyramid | E.V.. | allows B-frames to be used as references for predicting Bフレームを参照フレームに使う |
(no)b_pyramid | ||
| wpred | E.V.. | weighted biprediction for b-frames (H.264) Bの適応重み付け量子化 |
(no)weight_b | ||
| mixed_refs | E.V.. | one reference per partition, as opposed to one reference per macroblock マクロブロック単位ではなく、マクロブロック・パーティション単位で参照対象を選ぶ |
(no)mixed_refs | ||
| 8x8dct | E.V.. | high profile 8x8 transform (H.264) High profileの8x8変換 |
(no)8x8dct | ||
| fastpskip | E.V.. | fast pskip (H.264) Pのマクロブロック・タイプ＝skipの検出を速い段階で行う |
x264最大の弱点「フレーム単位でぱたぱたと動く闇階調のブロックノイズ」の原因 | (no)fast_pskip | |
| aud | E.V.. | access unit delimiters (H.264) | アクセス・ユニットの先頭に付ける開始符号。 | MPEG-2システムに収納する際に必要な模様。 | |
| brdo | E.V.. | b-frame rate-distortion optimization BのRDO(レート歪み最適化） |
(no)brdo |
||
| skiprd | E.V.. | RD optimal MB level residual skiping | |||
| ivlc | E.V.. | intra vlc table | |||
| drop_frame_timecode | E.V.. | ||||
| -error | <int> | E.V.. | |||
| -antialias | <int> | .DV.. | MP3 antialias algorithm MP3のアンチエイリアス・アルゴリズム |
||
| auto | .DV.. | ||||
| fastint | .DV.. | ||||
| int | .DV.. | ||||
| float | .DV.. | ||||
| -qns | <int> | E.V.. | quantizer noise shaping | ||
| -threads | <int> | EDV.. | threads | ||
| -mb_threshold | <int> | E.V.. | macroblock threshold | ||
| -dc | <int> | E.V.. | intra_dc_precision | ||
| -nssew | <int> | E.V.. | nsse weight | ||
| -skip_top | <int> | .DV.. | number of macroblock rows at the top which are skipped | ||
| -skip_bottom | <int> | .DV.. | number of macroblock rows at the bottom which are skipped | ||
| -profile | <int> | E.VA. | |||
| unknown | E.VA. | ||||
| -level | <int> | E.VA. | level_idcか？ | ||
| unknown | E.VA. | ||||
| -lowres | <int> | .DV.. | decode at 1= 1/2, 2=1/4, 3=1/8 resolutions | ||
| -skip_threshold | <int> | E.V.. | frame skip threshold | ||
| -skip_factor | <int> | E.V.. | frame skip factor | ||
| -skip_exp | <int> | E.V.. | frame skip exponent | ||
| -skipcmp | <int> | E.V.. | frame skip compare function | ||
| sad | E.V.. | sum of absolute differences, fast (default) | |||
| sse | E.V.. | sum of squared errors | |||
| satd | E.V.. | sum of absolute Hadamard transformed differences | |||
| dct | E.V.. | sum of absolute DCT transformed differences | |||
| psnr | E.V.. | sum of squared quantization errors (avoid, low quality) | |||
| bit | E.V.. | number of bits needed for the block | |||
| rd | E.V.. | rate distortion optimal, slow | |||
| zero | E.V.. | 0 | |||
| vsad | E.V.. | sum of absolute vertical differences | |||
| vsse | E.V.. | sum of squared vertical differences | |||
| nsse | E.V.. | noise preserving sum of squared differences | |||
| w53 | E.V.. | 39205 wavelet, only used in snow | |||
| w97 | E.V.. | 39332 wavelet, only used in snow | |||
| dctmax | E.V.. | ||||
| chroma | E.V.. | ||||
| -border_mask | <float> | E.V.. | increases the quantizer for macroblocks close to borders | ||
| -mblmin | <int> | E.V.. | min macroblock lagrange factor (VBR) | ||
| -mblmax | <int> | E.V.. | max macroblock lagrange factor (VBR) | ||
| -mepc | <int> | E.V.. | motion estimation bitrate penalty compensation (1.0 = 256) | ||
| -bidir_refine | <int> | E.V.. | refine the two motion vectors used in bidirectional macroblocks | ||
| -brd_scale | <int> | E.V.. | downscales frames for dynamic B-frame decision | ||
| -crf | <float> | E.V.. | enables constant quality mode, and selects the quality (x264) 固定品質モード |
crf | |
| -cqp | <int> | E.V.. | constant quantization parameter rate control method | ||
| -keyint_min | <int> | E.V.. | minimum interval between IDR-frames (x264) 最小IDR間隔 |
keyint_min | |
| -refs | <int> | E.V.. | reference frames to consider for motion compensation (Snow) 複数参照（任意距離参照） |
Snowにもあるという意味か | frameref |
| -chromaoffset | <int> | E.V.. | chroma qp offset from luma 輝度と彩度で量子化値を変える |
白黒で有効か | chroma_qp_offset |
| -bframebias | <int> | E.V.. | influences how often B-frames are used Bの挿入性向 |
(no)b_bias | |
| -trellis | <int> | E.VA. | rate-distortion optimal quantization | trellis | |
| -directpred | <int> | E.V.. | direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal) | direct_pred | |
| -complexityblur | <float> | E.V.. | reduce fluctuations in qp (before curve compression) curve compressionの前に量子化値の変動（幅？）を減らす。 |
cplx_blur | |
| -deblockalpha | <int> | E.V.. | in-loop deblocking filter alphac0 parameter | deblock=<-6-6>,<-6-6> | |
| -deblockbeta | <int> | E.V.. | in-loop deblocking filter beta parameter | 同上 | |
| -partitions | <flags> | E.V.. | macroblock subpartition sizes to consider | partitions | |
| parti4x4 | E.V.. | 細かいディテイルに有効 | |||
| parti8x8 | E.V.. | 8x8dct抜きでは意味が無い | |||
| partp4x4 | E.V.. | p4x4推奨はsubq=5以上、かつ、低解像度の場合のみ。 | |||
| partp8x8 | E.V.. | ||||
| partb8x8 | E.V.. | ||||
| -sc_factor | <int> | E.V.. | multiplied by qscale for each frame and added to scene_change_score | ||
| -mv0_threshold | <int> | E.V.. | |||
| -b_sensitivity | <int> | E.V.. | adjusts sensitivity of b_frame_strategy 1 | ||
| -compression_level | <int> | E.VA. | |||
| -use_lpc | <int> | E..A. | sets whether to use LPC mode (FLAC) | ||
| -lpc_coeff_precision | <int> | E..A. | LPC coefficient precision (FLAC) | ||
| -min_prediction_order | <int> | E..A. | |||
| -max_prediction_order | <int> | E..A. | |||
| -prediction_order_method | <int> | E..A. | search method for selecting prediction order | ||
| -min_partition_order | <int> | E..A. | |||
| -max_partition_order | <int> | E..A. | |||
| -timecode_frame_start | <int> | E.V.. | GOP timecode frame start number, in non drop frame format |
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