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。

AVCodecContextAVOptions:

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
	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
	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
	cbp	E.V..	use rate distortion optimization for cbp cbpのrdo
	qprd	E.V..	use rate distortion optimization for qp selection qp選択にrdoを使う
	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
-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
	int	E.V..	accurate integer 正確な整数計算
	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