rpmstrap
CentOS4を入れるけど、色々おかしい。
# diff /usr/lib/rpmstrap/scripts/centos4 /usr/lib/rpmstrap/scripts/centos4.org 38,39d37 < http://ftp.riken.jp/Linux/centos/4.3/os/i386/CentOS/RPMS/ < http://vault.centos.org/4.3/os/i386/CentOS/RPMS/ 49,51c47 < http://ftp.riken.jp/Linux/centos/4.3/os/x86_64/CentOS/RPMS/ < http://vault.centos.org/4.3/os/x86_64/CentOS/RPMS/ < http://mirror.centos.org/centos/4.1/os/x86_64/CentOS/RPMS/ --- > http://mirror.centos.org/centos/4/os/x86_64/CentOS/RPMS/ 266,270d261 < 52:sqlite-3.2.2-1.x86_64.rpm < 52:expat-1.95.7-4.x86_64.rpm < 52:python-urlgrabber-2.9.6-2.noarch.rpm < 52:python-elementtree-1.2.6-4.x86_64.rpm < 52:python-sqlite-1.1.6-1.x86_64.rpm
で、
# rpmstrap --verbose centos4 centos4
が成功。ただし、yumかからない。っていうかとりあえずviもない*1しDNSの設定もない。とりあえずchroot
# chroot centos4/
echoでつくってしまう。
# echo nameserver 192.168.1.1 >> /etc/resolv.conf
ただし、これでyumしようとしてもCentOS4.3はもうmirrorにないので、何とかしてリポジトリを向ける必要有り。
*1:nanoはある
とりあえずエンコしてみた。
いろんなところを参考にしながら、こんなシンタックスでエンコしてみた。
$ ffmpeg -y -i input.VOB -s 720x480 -b 1500k -maxrate 2000k -pass 1 -vcodec h264 -coder 1 -level 30 -aspect 16:9 -bufsize 9192kb -g 250 -mbd 2 -cmp 2 -subcmp 2 -qmin 10 -qmax 51 -trellis 2 -me umh -me_range 16 -subq 6 -chroma 1 -refs 3 -partitions all -an sample.mp4
見づらいので分解する。
$ ffmpeg \ -y \ -i input.VOB \ -s 720x480 \ -b 1500k \ -maxrate 2000k \ -pass 1 \ -vcodec h264 \ -coder 1 \ -level 30 \ -aspect 16:9 \ -bufsize 9192kb \ -g 250 \ -mbd 2 \ -cmp 2 \ -subcmp 2 \ -qmin 10 \ -qmax 51 \ -trellis 2 \ -me umh \ -me_range 16 \ -subq 6 \ -chroma 1 \ -refs 3 \ -partitions all \ -an sample.mp4
あとで各々のオプションは書くかもしれないとして・・・
元はmpeg2。audioはLPCM。のはずだけど、エンコしたら音声がすっぽりなくなってたorz。
before
after
どれだ！どれがいけなかった！
画質的には2Mbpsなはずで、動かない場面は元との区別があんまりない。ただし、照明のグラデーションがハレーションになってしまうところがある。
とりあえず音声をなんとか。
追記
オプションが間違ってた*1。だもんで、オプションの-anの代わりに
-acodec aac \ -ac 2 \ -ar 48000 \ -ab 128k
を追加。AACのサンプリングレート48k/ビットレート128kで。
そいでもってPSPに転送して再生して超綺麗でビックリ。PC上*2で再生してフルスクリーンにしたりすると元との差がやっと分かるくらいだけど、PSPだと文句なし。
2Mbpsから下げていく方向で。あと、ちょっと縦長になってるような気がするのでここも要調整。あとは2passくらいかな。
それと、元動画はやっぱり元動画のまま保存して、(PS3買うまでは)PSP用の解像度で作る。
追記2
PSP解像度指定。ただ、縦を272にすると上下1ラインずつ表示されないらしい。
-s 480x272
よくわからないオプション。
-partitions parti4x4+parti8x8+partp4x4+partp8x8+partb8x8
timestampは単純にdateから取れば。
-timestamp `date +"%Y-%m-%d %H:%M:%S"`
ffmpegのhelp
ちょっと長い＆毎度全部参照するのが面倒なので、貼り付ける。
サーチエンジンで引っかかったらごめんなさい。
$ ffmpeg -h
FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --prefix=/usr --libdir=${prefix}/lib --shlibdir=${prefix}/lib --incdir=${prefix}/include/ffmpeg --enable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --mandir=${prefix}/share/man --enable-libvorbis --enable-pthreads --enable-libfaac --enable-xvid --enable-libdts --enable-amr_nb --enable-amr_wb --enable-pp --enable-libogg --enable-libgsm --enable-x264 --enable-liba52 --enable-libtheora --extra-cflags=-Wall -g -fPIC -DPIC --cc=ccache cc --enable-swscaler
libavutil version: 49.4.0
libavcodec version: 51.40.2
libavformat version: 51.11.0
built on Mar 29 2007 09:07:44, gcc: 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --prefix=/usr --libdir=${prefix}/lib --shlibdir=${prefix}/lib --incdir=${prefix}/include/ffmpeg --enable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --mandir=${prefix}/share/man --enable-libvorbis --enable-pthreads --enable-libfaac --enable-xvid --enable-libdts --enable-amr_nb --enable-amr_wb --enable-pp --enable-libogg --enable-libgsm --enable-x264 --enable-liba52 --enable-libtheora --extra-cflags=-Wall -g -fPIC -DPIC --cc=ccache cc --enable-swscaler
libavutil version: 49.4.0
libavcodec version: 51.40.2
libavformat version: 51.11.0
built on Mar 29 2007 09:07:44, gcc: 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
usage: ffmpeg [[infile options] -i infile]... {[outfile options] outfile}...
Hyper fast Audio and Video encoder
Main options:
-L show license
-h show help
-version show version
-formats show available formats, codecs, protocols, ...
-f fmt force format
-i filename input file name
-y overwrite output files
-t duration set the recording time
-fs limit_size set the limit file size
-ss time_off set the start time offset
-itsoffset time_off set the input ts offset
-title string set the title
-timestamp time set the timestamp
-author string set the author
-copyright string set the copyright
-comment string set the comment
-album string set the album
-v verbose control amount of logging
-target type specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd", "ntsc-svcd", ...)
-dframes number set the number of data frames to record
-scodec codec force subtitle codec ('copy' to copy stream)
-newsubtitle add a new subtitle stream to the current output stream
-slang code set the ISO 639 language code (3 letters) of the current subtitle stream
Video options:
-vframes number set the number of video frames to record
-r rate set frame rate (Hz value, fraction or abbreviation)
-s size set frame size (WxH or abbreviation)
-aspect aspect set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)
-croptop size set top crop band size (in pixels)
-cropbottom size set bottom crop band size (in pixels)
-cropleft size set left crop band size (in pixels)
-cropright size set right crop band size (in pixels)
-padtop size set top pad band size (in pixels)
-padbottom size set bottom pad band size (in pixels)
-padleft size set left pad band size (in pixels)
-padright size set right pad band size (in pixels)
-padcolor color set color of pad bands (Hex 000000 thru FFFFFF)
-vn disable video
-vcodec codec force video codec ('copy' to copy stream)
-sameq use same video quality as source (implies VBR)
-pass n select the pass number (1 or 2)
-passlogfile file select two pass log file name
-newvideo add a new video stream to the current output stream
Advanced Video options:
-pix_fmt format set pixel format
-intra use only intra frames
-vdt n discard threshold
-qscale q use fixed video quantizer scale (VBR)
-qdiff q max difference between the quantizer scale (VBR)
-rc_eq equation set rate control equation
-rc_override override rate control override for specific intervals
-me method set motion estimation method
-me_threshold motion estimaton threshold
-strict strictness how strictly to follow the standards
-deinterlace deinterlace pictures
-psnr calculate PSNR of compressed frames
-vstats dump video coding statistics to file
-vhook module insert video processing module
-intra_matrix matrix specify intra matrix coeffs
-inter_matrix matrix specify inter matrix coeffs
-top top=1/bottom=0/auto=-1 field first
-dc precision intra_dc_precision
-vtag fourcc/tag force video tag/fourcc
-qphist show QP histogram
-vbsf bitstream filter
Audio options:
-aframes number set the number of audio frames to record
-aq quality set audio quality (codec-specific)
-ar rate set audio sampling rate (in Hz)
-ac channels set number of audio channels
-an disable audio
-acodec codec force audio codec ('copy' to copy stream)
-vol volume change audio volume (256=normal)
-newaudio add a new audio stream to the current output stream
-alang code set the ISO 639 language code (3 letters) of the current audio stream
Advanced Audio options:
-atag fourcc/tag force audio tag/fourcc
-absf bitstream filter
Subtitle options:
-scodec codec force subtitle codec ('copy' to copy stream)
-newsubtitle add a new subtitle stream to the current output stream
-slang code set the ISO 639 language code (3 letters) of the current subtitle stream
Audio/Video grab options:
-vc channel set video grab channel (DV1394 only)
-tvstd standard set television standard (NTSC, PAL (SECAM))
-isync sync read on input
Advanced options:
-map file:stream[:syncfile:syncstream] set input stream mapping
-map_meta_data outfile:infile set meta data information of outfile from infile
-benchmark add timings for benchmarking
-dump dump each input packet
-hex when dumping packets, also dump the payload
-re read input at native frame rate
-loop_input loop (current only works with images)
-loop_output number of times to loop output in formats that support looping (0 loops forever)
-threads count thread count
-vsync video sync method
-async audio sync method
-vglobal video global header storage type
-copyts copy timestamps
-shortest finish encoding within shortest input
-dts_delta_threshold timestamp discontinuity delta threshold
-muxdelay seconds set the maximum demux-decode delay
-muxpreload seconds set the initial demux-decode delay
AVCodecContext AVOptions:
-b <int> E.V.. set bitrate (in bits/s)
-ab <int> E..A. set bitrate (in bits/s)
-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+)
qpel E.V.. use 1/4 pel motion compensation
loop E.V.. use loop filter
gmc E.V.. use gmc
mv0 E.V.. always try a mb with mv=<0,0>
part E.V.. use data partitioning
gray EDV.. only decode/encode grayscale
psnr E.V.. error[?] variables will be set during encoding
naq E.V.. normalize adaptive quantization
ildct E.V.. use interlaced dct
low_delay EDV.. force low delay
alt E.V.. enable alternate scantable (mpeg2/mpeg4)
trell E.V.. use trellis quantization
bitexact EDVAS use only bitexact stuff (except (i)dct)
aic E.V.. h263 advanced intra coding / mpeg4 ac prediction
umv E.V.. use unlimited motion vectors
cbp E.V.. use rate distortion optimization for cbp
qprd E.V.. use rate distortion optimization for qp selection
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
-me_method <int> E.V.. set motion estimation method
-g <int> E.V.. set the group of picture size
-cutoff <int> E..A. set cutoff bandwidth
-frame_size <int> E..A.
-qcomp <float> E.V.. video quantizer scale compression (VBR)
-qblur <float> E.V.. video quantizer scale blur (VBR)
-qmin <int> E.V.. min video quantizer scale (VBR)
-qmax <int> E.V.. max video quantizer scale (VBR)
-qdiff <int> E.V.. max difference between the quantizer scale (VBR)
-bf <int> E.V.. use 'frames' B frames
-b_qfactor <float> E.V.. qp factor between p and b frames
-rc_strategy <int> E.V.. ratecontrol method
-b_strategy <int> E.V.. strategy to choose between I/P/B-frames
-hurry_up <int> .DV..
-ps <int> E.V.. rtp payload size in bits
-bug <flags> .DV.. workaround not auto detected encoder bugs
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)
-celim <int> E.V.. single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
-strict <int> .DVA. how strictly to follow the standards
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
experimental E.V.. allow non standarized experimental things
-b_qoffset <float> E.V.. qp offset between p and b frames
-er <int> .DVA. set error resilience strategy
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
-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)
-rc_buf_aggressivity <float> E.V.. currently useless
-i_qfactor <float> E.V.. qp factor between p and i frames
-i_qoffset <float> E.V.. qp offset between p and i frames
-rc_init_cplx <float> E.V.. initial complexity for 1-pass encoding
-dct <int> E.V.. DCT algorithm
auto E.V.. autoselect a good one (default)
fastint E.V.. fast integer
int E.V.. accurate integer
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
-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
-idct <int> EDV.. select IDCT implementation
auto EDV..
int EDV..
simple EDV..
simplemmx EDV..
libmpeg2mmx EDV..
ps2 EDV..
mlib EDV..
arm EDV..
altivec EDV..
sh4 EDV..
simplearm EDV..
simplearmv5te EDV..
h264 EDV..
vp3 EDV..
ipp EDV..
xvidmmx EDV..
-ec <flags> .DV.. set error concealment strategy
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
-debug <flags> EDVAS print specific debug info
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)
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
-mb_qmax <int> E.V.. obsolete, use qmax
-cmp <int> E.V.. full pel me 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..
-subcmp <int> E.V.. sub pel me 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..
-mbcmp <int> E.V.. macroblock 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..
-ildctcmp <int> E.V.. interlaced dct 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..
-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
-me_range <int> E.V.. limit motion vectors range (1023 for DivX player)
-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
ac E.V.. arithmetic coder
-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
-lmin <int> E.V.. min lagrange factor (VBR)
-lmax <int> E.V.. max lagrange factor (VBR)
-nr <int> E.V.. noise reduction
-rc_init_occupancy <int> E.V.. number of bits which should be loaded into the rc buffer before decoding starts
-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
bpyramid E.V.. allows B-frames to be used as references for predicting
wpred E.V.. weighted biprediction for b-frames (H.264)
mixed_refs E.V.. one reference per partition, as opposed to one reference per macroblock
dct8x8 E.V.. high profile 8x8 transform (H.264)
fastpskip E.V.. fast pskip (H.264)
aud E.V.. access unit delimiters (H.264)
brdo E.V.. b-frame rate-distortion optimization
skiprd E.V.. RD optimal MB level residual skiping
ivlc E.V.. intra vlc table
drop_frame_timecode E.V..
non_linear_q E.V.. use non linear quantizer
-error <int> E.V..
-antialias <int> .DV.. MP3 antialias algorithm
auto .DV..
fastint .DV..
int .DV..
float .DV..
-qns <int> E.V.. quantizer noise shaping
-threads <int> EDV..
-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.
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.. 5/3 wavelet, only used in snow
w97 E.V.. 9/7 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)
-cqp <int> E.V.. constant quantization parameter rate control method
-keyint_min <int> E.V.. minimum interval between IDR-frames (x264)
-refs <int> E.V.. reference frames to consider for motion compensation (Snow)
-chromaoffset <int> E.V.. chroma qp offset from luma
-bframebias <int> E.V.. influences how often B-frames are used
-trellis <int> E.VA. rate-distortion optimal quantization
-directpred <int> E.V.. direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
-complexityblur <float> E.V.. reduce fluctuations in qp (before curve compression)
-deblockalpha <int> E.V.. in-loop deblocking filter alphac0 parameter
-deblockbeta <int> E.V.. in-loop deblocking filter beta parameter
-partitions <flags> E.V.. macroblock subpartition sizes to consider
parti4x4 E.V..
parti8x8 E.V..
partp4x4 E.V..
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
AVFormatContext AVOptions:
-probesize <int> .D...
-muxrate <int> E.... set mux rate
-packetsize <int> E.... set packet size
-fflags <flags> ED...
ignidx .D... ignore index
genpts .D... generate pts
-track <int> E.... set the track number
-year <int> E.... set the year
-analyzeduration <int> .D...
ffmpegで扱えるフォーマット
$ ffmpeg -formats
FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --prefix=/usr --libdir=${prefix}/lib --shlibdir=${prefix}/lib --incdir=${prefix}/include/ffmpeg --enable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --mandir=${prefix}/share/man --enable-libvorbis --enable-pthreads --enable-libfaac --enable-xvid --enable-libdts --enable-amr_nb --enable-amr_wb --enable-pp --enable-libogg --enable-libgsm --enable-x264 --enable-liba52 --enable-libtheora --extra-cflags=-Wall -g -fPIC -DPIC --cc=ccache cc --enable-swscaler
libavutil version: 49.4.0
libavcodec version: 51.40.2
libavformat version: 51.11.0
built on Mar 29 2007 09:07:44, gcc: 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
File formats:
E 3g2 3gp2 format
E 3gp 3gp format
D 4xm 4X Technologies format
D MTV MTV format
D RoQ Id RoQ format
D aac ADTS AAC
DE ac3 raw ac3
E adts ADTS AAC
DE aiff Audio IFF
DE alaw pcm A law format
DE amr 3gpp amr file format
DE asf asf format
E asf_stream asf format
DE au SUN AU Format
DE audio_device audio grab and output
DE avi avi format
D avs avs format
E crc crc testing format
D daud D-Cinema audio format
D dsicin Delphine Software International CIN format
D dts raw dts
DE dv DV video format
D dv1394 dv1394 A/V grab
E dvd MPEG2 PS format (DVD VOB)
D dxa dxa
D ea Electronic Arts Multimedia Format
DE ffm ffm format
D film_cpk Sega FILM/CPK format
DE flac raw flac
D flic FLI/FLC/FLX animation format
DE flv flv format
E framecrc framecrc testing format
DE gif GIF Animation
DE gxf GXF format
DE h261 raw h261
DE h263 raw h263
DE h264 raw H264 video format
D idcin Id CIN format
DE image2 image2 sequence
DE image2pipe piped image2 sequence
D ingenient Ingenient MJPEG
D ipmovie Interplay MVE format
DE m4v raw MPEG4 video format
D matroska Matroska file format
DE mjpeg MJPEG video
D mm American Laser Games MM format
DE mmf mmf format
E mov mov format
D mov,mp4,m4a,3gp,3g2,mj2 QuickTime/MPEG4/Motion JPEG 2000 format
E mp2 MPEG audio layer 2
DE mp3 MPEG audio layer 3
E mp4 mp4 format
D mpc musepack
DE mpeg MPEG1 System format
E mpeg1video MPEG video
E mpeg2video MPEG2 video
DE mpegts MPEG2 transport stream format
D mpegvideo MPEG video
E mpjpeg Mime multipart JPEG format
DE mulaw pcm mu law format
D mxf MXF format
D nsv NullSoft Video format
E null null video format
D nut nut format
D nuv NuppelVideo format
DE ogg Ogg format
E psp psp mp4 format
D psxstr Sony Playstation STR format
DE rawvideo raw video format
D redir Redirector format
DE rm rm format
E rtp RTP output format
D rtsp RTSP input format
DE s16be pcm signed 16 bit big endian format
DE s16le pcm signed 16 bit little endian format
DE s8 pcm signed 8 bit format
D sdp SDP
D shn raw shorten
D smk Smacker Video
D sol Sierra SOL Format
E svcd MPEG2 PS format (VOB)
DE swf Flash format
D tiertexseq Tiertex Limited SEQ format
D tta true-audio
DE u16be pcm unsigned 16 bit big endian format
DE u16le pcm unsigned 16 bit little endian format
DE u8 pcm unsigned 8 bit format
D vc1 raw vc1
E vcd MPEG1 System format (VCD)
D video4linux video grab
D video4linux2 video grab
D vmd Sierra VMD format
E vob MPEG2 PS format (VOB)
DE voc Creative Voice File format
DE wav wav format
D wc3movie Wing Commander III movie format
D wsaud Westwood Studios audio format
D wsvqa Westwood Studios VQA format
D wv WavPack
DE yuv4mpegpipe YUV4MPEG pipe format
Codecs:
D V 4xm
D V D 8bps
D V VMware video
DEA aac
D V D aasc
DEA ac3
DEA adpcm_4xm
DEA adpcm_adx
DEA adpcm_ct
DEA adpcm_ea
DEA adpcm_ima_dk3
DEA adpcm_ima_dk4
DEA adpcm_ima_qt
DEA adpcm_ima_smjpeg
DEA adpcm_ima_wav
DEA adpcm_ima_ws
DEA adpcm_ms
DEA adpcm_sbpro_2
DEA adpcm_sbpro_3
DEA adpcm_sbpro_4
DEA adpcm_swf
DEA adpcm_xa
DEA adpcm_yamaha
D A alac
DEA amr_nb
DEA amr_wb
DEV D asv1
DEV D asv2
D V D avs
DEV bmp
D V D camstudio
D V D camtasia
D V D cavs
D V D cinepak
D V D cljr
D A cook
D V D cyuv
D A dca
D V D dnxhd
D A dsicinaudio
D V D dsicinvideo
D A dts
DES dvbsub
DES dvdsub
DEV D dvvideo
D V dxa
DEV D ffv1
DEVSD ffvhuff
DEA flac
DEV D flashsv
D V D flic
DEVSD flv
D V D fraps
DEA g726
DEV gif
DEA gsm
D A gsm_ms
DEV D h261
DEVSDT h263
D VSD h263i
EV h263p
DEV DT h264
DEVSD huffyuv
D V D idcinvideo
D A imc
D V D indeo2
D V indeo3
D A interplay_dpcm
D V D interplayvideo
EV jpegls
D V kmvc
EV libtheora
EV ljpeg
D V D loco
D A mace3
D A mace6
D V D mdec
DEV D mjpeg
D V D mjpegb
D V D mmvideo
DEA mp2
DEA mp3
D A mp3adu
D A mp3on4
D A mpc sv7
DEVSDT mpeg1video
DEVSDT mpeg2video
DEVSDT mpeg4
D A mpeg4aac
D VSDT mpegvideo
D VSDT mpegvideo_xvmc
DEVSD msmpeg4
DEVSD msmpeg4v1
DEVSD msmpeg4v2
D V D msrle
D V D msvideo1
D V D mszh
D V D nuv
DEV pam
DEV pbm
DEA pcm_alaw
DEA pcm_mulaw
DEA pcm_s16be
DEA pcm_s16le
DEA pcm_s24be
DEA pcm_s24daud
DEA pcm_s24le
DEA pcm_s32be
DEA pcm_s32le
DEA pcm_s8
DEA pcm_u16be
DEA pcm_u16le
DEA pcm_u24be
DEA pcm_u24le
DEA pcm_u32be
DEA pcm_u32le
DEA pcm_u8
DEV pgm
DEV pgmyuv
DEV png
DEV ppm
D A qdm2
D V D qdraw
D V D qpeg
D V D qtrle
DEV rawvideo
D A real_144
D A real_288
D A roq_dpcm
D V D roqvideo
D V D rpza
DEV D rv10
DEV D rv20
D A shorten
D A smackaud
D V smackvid
D V D smc
DEV snow
D A sol_dpcm
DEA sonic
EA sonicls
D V D sp5x
DEV D svq1
D VSD svq3
DEV targa
D V theora
D V D tiertexseqvideo
D V tiff
D V D truemotion1
D V D truemotion2
D A truespeech
D A tta
D V D ultimotion
D V vc1
D V D vcr1
D A vmdaudio
D V D vmdvideo
DEA vorbis
D V vp3
D V vp5
D V vp6
D V vp6f
D V D vqavideo
D A wavpack
DEA wmav1
DEA wmav2
DEVSD wmv1
DEVSD wmv2
D V wmv3
D V D wnv1
D A ws_snd1
D A xan_dpcm
D V D xan_wc3
D V D xl
EV xvid
DEV D zlib
DEV zmbv
Supported file protocols:
file: pipe: udp: rtp: tcp: http:
Frame size, frame rate abbreviations:
ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif
Motion estimation methods:
zero(fastest) full(slowest) log phods epzs(default) x1 hex umh iter
Note, the names of encoders and decoders dont always match, so there are
several cases where the above table shows encoder only or decoder only entries
even though both encoding and decoding are supported for example, the h263
decoder corresponds to the h263 and h263p encoders, for file formats its even
worse DE h264 raw H264 video format
なので、H.264なPSP動画を作るために精進しようかという企画。明日国家試験なんだけど。
ffmpegのバージョン
$ ffmpeg -version
FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --prefix=/usr --libdir=${prefix}/lib --shlibdir=${prefix}/lib --incdir=${prefix}/include/ffmpeg --enable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --mandir=${prefix}/share/man --enable-libvorbis --enable-pthreads --enable-libfaac --enable-xvid --enable-libdts --enable-amr_nb --enable-amr_wb --enable-pp --enable-libogg --enable-libgsm --enable-x264 --enable-liba52 --enable-libtheora --extra-cflags=-Wall -g -fPIC -DPIC --cc=ccache cc --enable-swscaler
libavutil version: 49.4.0
libavcodec version: 51.40.2
libavformat version: 51.11.0
built on Mar 29 2007 09:07:44, gcc: 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
ffmpeg SVN-rUNKNOWN
libavutil 3212288
libavcodec 3352578
libavformat 3345152多分http://www.debian-multimedia.orgのパッケージだと思う。
