Provided by: x264_0.120.2151+gita3f4407-2_amd64 bug

NAME

       x264 - fast h264 encoder

DESCRIPTION

       x264 core:120 r2151 a3f4407 Syntax: x264 [options] -o outfile infile

       Infile can be raw (in which case resolution is required),

              or  YUV4MPEG (*.y4m), or Avisynth if compiled with support (no).  or libav* formats
              if compiled with lavf support (yes) or ffms support (yes).

   Outfile type is selected by filename:
              .264 -> Raw bytestream .mkv -> Matroska .flv -> Flash Video .mp4 -> MP4 if compiled
              with GPAC support (no)

       Output bit depth: 8 (configured at compile time)

OPTIONS

       -h, --help
              List basic options

       --longhelp
              List more options

       --fullhelp
              List all options

       Example usage:

              Constant quality mode:

              x264 --crf 24 -o <output> <input>

              Two-pass with a bitrate of 1000kbps:

              x264  --pass  1  --bitrate 1000 -o <output> <input> x264 --pass 2 --bitrate 1000 -o
              <output> <input>

              Lossless:

              x264 --qp 0 -o <output> <input>

              Maximum PSNR at the cost of speed and visual quality:

              x264 --preset placebo --tune psnr -o <output> <input>

              Constant bitrate at 1000kbps with a 2 second-buffer:

              x264 --vbv-bufsize 2000 --bitrate 1000 -o <output> <input>

       Presets:

       --profile <string>
              Force the limits of an H.264 profile Overrides all settings.  - baseline:

              --no-8x8dct --bframes 0 --no-cabac  --cqm  flat  --weightp  0  No  interlaced.   No
              lossless.

              - main:

              --no-8x8dct --cqm flat No lossless.

              - high:

              No lossless.

              - high10:

              No lossless.  Support for bit depth 8-10.

              - high422:

              No  lossless.   Support  for  bit  depth  8-10.   Support  for  4:2:0/4:2:2  chroma
              subsampling.

              - high444:

              Support for bit depth 8-10.  Support for 4:2:0/4:2:2/4:4:4 chroma subsampling.

       --preset <string>
              Use a preset to select encoding settings [medium] Overridden by user  settings.   -
              ultrafast:

              --no-8x8dct --aq-mode 0 --b-adapt 0 --bframes 0 --no-cabac --no-deblock --no-mbtree
              --me dia --no-mixed-refs --partitions none --rc-lookahead 0 --ref  1  --scenecut  0
              --subme 0 --trellis 0 --no-weightb --weightp 0

              - superfast:

              --no-mbtree  --me dia --no-mixed-refs --partitions i8x8,i4x4 --rc-lookahead 0 --ref
              1 --subme 1 --trellis 0 --weightp 1

              - veryfast:

              --no-mixed-refs --rc-lookahead 10 --ref 1 --subme 2 --trellis 0 --weightp 1

              - faster:

              --no-mixed-refs --rc-lookahead 20 --ref 2 --subme 4 --weightp 1

              - fast:

              --rc-lookahead 30 --ref 2 --subme 6 --weightp 1

              - medium:

              Default settings apply.

              - slow:

              --b-adapt 2 --direct auto --me umh --rc-lookahead 50 --ref 5 --subme 8

              - slower:

              --b-adapt 2 --direct auto --me umh  --partitions  all  --rc-lookahead  60  --ref  8
              --subme 9 --trellis 2

              - veryslow:

              --b-adapt  2 --bframes 8 --direct auto --me umh --merange 24 --partitions all --ref
              16 --subme 10 --trellis 2 --rc-lookahead 60

              - placebo:

              --bframes 16 --b-adapt 2 --direct auto --slow-firstpass --no-fast-pskip  --me  tesa
              --merange 24 --partitions all --rc-lookahead 60 --ref 16 --subme 11 --trellis 2

       --tune <string>
              Tune the settings for a particular type of source or situation

              Overridden  by  user settings.  Multiple tunings are separated by commas.  Only one
              psy tuning can be used at a time.  - film (psy tuning):

              --deblock -1:-1 --psy-rd <unset>:0.15

              - animation (psy tuning):

              --bframes {+2} --deblock 1:1 --psy-rd 0.4:<unset> --aq-strength 0.6  --ref  {Double
              if >1 else 1}

              - grain (psy tuning):

              --aq-strength 0.5 --no-dct-decimate --deadzone-inter 6 --deadzone-intra 6 --deblock
              -2:-2 --ipratio 1.1 --pbratio 1.1 --psy-rd <unset>:0.25 --qcomp 0.8

              - stillimage (psy tuning):

              --aq-strength 1.2 --deblock -3:-3 --psy-rd 2.0:0.7

              - psnr (psy tuning):

              --aq-mode 0 --no-psy

              - ssim (psy tuning):

              --aq-mode 2 --no-psy

              - fastdecode:

              --no-cabac --no-deblock --no-weightb --weightp 0

              - zerolatency:

              --bframes   0   --force-cfr   --no-mbtree   --sync-lookahead   0   --sliced-threads
              --rc-lookahead 0

       --slow-firstpass
              Don't  force these faster settings with --pass 1: --no-8x8dct --me dia --partitions
              none --ref 1 --subme {2 if >2 else unchanged} --trellis 0 --fast-pskip

       Frame-type options:

       -I, --keyint <integer or "infinite"> Maximum GOP size [250]

       -i, --min-keyint <integer>
              Minimum GOP size [auto]

       --no-scenecut
              Disable adaptive I-frame decision

       --scenecut <integer>
              How aggressively to insert extra I-frames [40]

       --intra-refresh
              Use Periodic Intra Refresh instead of IDR frames

       -b, --bframes <integer>
              Number of B-frames between I and P [3]

       --b-adapt <integer>
              Adaptive B-frame decision method [1] Higher values may lower threading  efficiency.
              - 0: Disabled - 1: Fast - 2: Optimal (slow with high --bframes)

       --b-bias <integer>
              Influences how often B-frames are used [0]

       --b-pyramid <string>
              Keep  some  B-frames  as  references  [normal]  - none: Disabled - strict: Strictly
              hierarchical pyramid - normal: Non-strict (not Blu-ray compatible)

       --open-gop
              Use recovery points to close GOPs Only available with b-frames

       --no-cabac
              Disable CABAC

       -r, --ref <integer>
              Number of reference frames [3]

       --no-deblock
              Disable loop filter

       -f, --deblock <alpha:beta>
              Loop filter parameters [0:0]

       --slices <integer>
              Number of slices per frame; forces rectangular slices and is  overridden  by  other
              slicing options

       --slice-max-size <integer> Limit the size of each slice in bytes

       --slice-max-mbs <integer> Limit the size of each slice in macroblocks

       --tff  Enable interlaced mode (top field first)

       --bff  Enable interlaced mode (bottom field first)

       --constrained-intra
              Enable constrained intra prediction.

       --pulldown <string>
              Use  soft  pulldown  to  change frame rate - none, 22, 32, 64, double, triple, euro
              (requires cfr input)

       --fake-interlaced
              Flag stream as interlaced but encode progressive.  Makes it possible to encode  25p
              and 30p Blu-Ray streams. Ignored in interlaced mode.

       --frame-packing <integer> For stereoscopic videos define frame arrangement
              - 0: checkerboard - pixels are alternatively from L and R - 1: column alternation -
              L and R are interlaced by column - 2: row alternation - L and R are  interlaced  by
              row  - 3: side by side - L is on the left, R on the right - 4: top bottom - L is on
              top, R on bottom - 5: frame alternation - one view per frame

       Ratecontrol:

       -q, --qp <integer>
              Force constant QP (0-69, 0=lossless)

       -B, --bitrate <integer>
              Set bitrate (kbit/s)

       --crf <float>
              Quality-based VBR (0-51) [23.0]

       --rc-lookahead <integer> Number of frames for frametype lookahead [40]

       --vbv-maxrate <integer> Max local bitrate (kbit/s) [0]

       --vbv-bufsize <integer> Set size of the VBV buffer (kbit) [0]

       --vbv-init <float>
              Initial VBV buffer occupancy [0.9]

       --crf-max <float>
              With CRF+VBV, limit RF to this value May cause VBV underflows!

       --qpmin <integer>
              Set min QP [0]

       --qpmax <integer>
              Set max QP [69]

       --qpstep <integer>
              Set max QP step [4]

       --ratetol <float>
              Tolerance of ABR ratecontrol and VBV [1.0]

       --ipratio <float>
              QP factor between I and P [1.40]

       --pbratio <float>
              QP factor between P and B [1.30]

       --chroma-qp-offset <integer>
              QP difference between chroma and luma [0]

       --aq-mode <integer>
              AQ method [1] - 0: Disabled - 1: Variance AQ (complexity mask) -  2:  Auto-variance
              AQ (experimental)

       --aq-strength <float>
              Reduces blocking and blurring in flat and textured areas. [1.0]

       -p, --pass <integer>
              Enable  multipass  ratecontrol  - 1: First pass, creates stats file - 2: Last pass,
              does not overwrite stats file - 3: Nth pass, overwrites stats file

       --stats <string>
              Filename for 2 pass stats ["x264_2pass.log"]

       --no-mbtree
              Disable mb-tree ratecontrol.

       --qcomp <float>
              QP curve compression [0.60]

       --cplxblur <float>
              Reduce fluctuations in QP (before curve compression) [20.0]

       --qblur <float>
              Reduce fluctuations in QP (after curve compression) [0.5]

       --zones <zone0>/<zone1>/...
              Tweak the bitrate of regions of the video Each zone is of the form

              <start frame>,<end frame>,<option> where <option> is either

              q=<integer> (force QP)

       or     b=<float> (bitrate multiplier)

       --qpfile <string>
              Force frametypes and QPs for some or all frames Format of  each  line:  framenumber
              frametype QP QP is optional (none lets x264 choose). Frametypes: I,i,K,P,B,b.

              K=<I or i> depending on open-gop setting

              QPs are restricted by qpmin/qpmax.

       Analysis:

       -A, --partitions <string>
              Partitions  to  consider  ["p8x8,b8x8,i8x8,i4x4"]  - p8x8, p4x4, b8x8, i8x8, i4x4 -
              none, all (p4x4 requires p8x8. i8x8 requires --8x8dct.)

       --direct <string>
              Direct MV prediction mode ["spatial"] - none, spatial, temporal, auto

       --no-weightb
              Disable weighted prediction for B-frames

       --weightp <integer>
              Weighted prediction for P-frames [2] - 0: Disabled - 1: Weighted refs - 2: Weighted
              refs + Duplicates

       --me <string>
              Integer  pixel  motion  estimation  method  ["hex"] - dia: diamond search, radius 1
              (fast) - hex: hexagonal search, radius 2 - umh: uneven multi-hexagon search -  esa:
              exhaustive search - tesa: hadamard exhaustive search (slow)

       --merange <integer>
              Maximum motion vector search range [16]

       --mvrange <integer>
              Maximum motion vector length [-1 (auto)]

       --mvrange-thread <int>
              Minimum buffer between threads [-1 (auto)]

       -m, --subme <integer>
              Subpixel   motion  estimation  and  mode  decision  [7]  -  0:  fullpel  only  (not
              recommended) - 1: SAD mode decision, one qpel iteration - 2: SATD mode  decision  -
              3-5:  Progressively  more  qpel  -  6: RD mode decision for I/P-frames - 7: RD mode
              decision for all frames - 8: RD refinement for I/P-frames - 9:  RD  refinement  for
              all  frames  - 10: QP-RD - requires trellis=2, aq-mode>0 - 11: Full RD: disable all
              early terminations

       --psy-rd <float:float>
              Strength of psychovisual optimization ["1.0:0.0"] #1: RD  (requires  subme>=6)  #2:
              Trellis (requires trellis, experimental)

       --no-psy
              Disable all visual optimizations that worsen both PSNR and SSIM.

       --no-mixed-refs
              Don't decide references on a per partition basis

       --no-chroma-me
              Ignore chroma in motion estimation

       --no-8x8dct
              Disable adaptive spatial transform size

       -t, --trellis <integer>
              Trellis RD quantization. [1] - 0: disabled - 1: enabled only on the final encode of
              a MB - 2: enabled on all mode decisions

       --no-fast-pskip
              Disables early SKIP detection on P-frames

       --no-dct-decimate
              Disables coefficient thresholding on P-frames

       --nr <integer>
              Noise reduction [0]

       --deadzone-inter <int>
              Set the size of the inter luma quantization deadzone [21]

       --deadzone-intra <int>
              Set the size of the intra luma quantization deadzone [11] Deadzones  should  be  in
              the range 0 - 32.

       --cqm <string>
              Preset quant matrices ["flat"] - jvt, flat

       --cqmfile <string>
              Read  custom  quant  matrices  from a JM-compatible file Overrides any other --cqm*
              options.

       --cqm4 <list>
              Set all 4x4 quant matrices Takes a comma-separated list of 16 integers.

       --cqm8 <list>
              Set all 8x8 quant matrices Takes a comma-separated list of 64 integers.

       --cqm4i, --cqm4p, --cqm8i, --cqm8p <list>
              Set both luma and chroma quant matrices

       --cqm4iy, --cqm4ic, --cqm4py, --cqm4pc <list>
              Set individual quant matrices

       Video Usability Info (Annex E): The VUI settings are not  used  by  the  encoder  but  are
       merely suggestions to the playback equipment. See doc/vui.txt for details. Use at your own
       risk.

       --overscan <string>
              Specify crop overscan setting ["undef"] - undef, show, crop

       --videoformat <string>
              Specify video format ["undef"] - component, pal, ntsc, secam, mac, undef

       --range <string>
              Specify color range ["auto"] - auto, tv, pc

       --colorprim <string>
              Specify color primaries ["undef"] - undef, bt709, bt470m, bt470bg

              smpte170m, smpte240m, film

       --transfer <string>
              Specify transfer characteristics ["undef"] - undef, bt709, bt470m, bt470bg, linear,

              log100, log316, smpte170m, smpte240m

       --colormatrix <string>
              Specify color matrix setting ["???"]  - undef, bt709, fcc, bt470bg

              smpte170m, smpte240m, GBR, YCgCo

       --chromaloc <integer>
              Specify chroma sample location (0 to 5) [0]

       --nal-hrd <string>
              Signal HRD information (requires vbv-bufsize) - none, vbr, cbr (cbr not allowed  in
              .mp4)

       --pic-struct
              Force pic_struct in Picture Timing SEI

       --crop-rect <string>
              Add 'left,top,right,bottom' to the bitstream-level cropping rectangle

       Input/Output:

       -o, --output <string>
              Specify output file

       --muxer <string>
              Specify output container format ["auto"] - auto, raw, mkv, flv

       --demuxer <string>
              Specify input container format ["auto"] - auto, raw, y4m, lavf, ffms

       --input-fmt <string>
              Specify input file format (requires lavf support)

       --input-csp <string>
              Specify input colorspace format for raw input - valid csps for `raw' demuxer:

              i420, yv12, nv12, i422, yv16, nv16, i444, yv24, bgr, bgra, rgb

              - valid csps for `lavf' demuxer:

              yuv420p,  yuyv422,  rgb24,  bgr24, yuv422p, yuv444p, yuv410p, yuv411p, gray, monow,
              monob, pal8, yuvj420p, yuvj422p, yuvj444p, xvmcmc,  xvmcidct,  uyvy422,  uyyvyy411,
              bgr8,  bgr4,  bgr4_byte, rgb8, rgb4, rgb4_byte, nv12, nv21, argb, rgba, abgr, bgra,
              gray16be,  gray16le,  yuv440p,   yuvj440p,   yuva420p,   vdpau_h264,   vdpau_mpeg1,
              vdpau_mpeg2, vdpau_wmv3, vdpau_vc1, rgb48be, rgb48le, rgb565be, rgb565le, rgb555be,
              rgb555le,  bgr565be,  bgr565le,   bgr555be,   bgr555le,   vaapi_moco,   vaapi_idct,
              vaapi_vld,   yuv420p16le,   yuv420p16be,   yuv422p16le,  yuv422p16be,  yuv444p16le,
              yuv444p16be, vdpau_mpeg4, dxva2_vld, rgb444le, rgb444be, bgr444le, bgr444be, y400a,
              bgr48be,  bgr48le,  yuv420p9be,  yuv420p9le, yuv420p10be, yuv420p10le, yuv422p10be,
              yuv422p10le,  yuv444p9be,   yuv444p9le,   yuv444p10be,   yuv444p10le,   yuv422p9be,
              yuv422p9le, vda_vld, gbrp, gbrp9be, gbrp9le, gbrp10be, gbrp10le, gbrp16be, gbrp16le

       --output-csp <string>
              Specify output colorspace ["i420"] - i420, i422, i444, rgb

       --input-depth <integer> Specify input bit depth for raw input

       --input-range <string>
              Specify input color range ["auto"] - auto, tv, pc

       --input-res <intxint>
              Specify input resolution (width x height)

       --index <string>
              Filename for input index file

       --sar width:height
              Specify Sample Aspect Ratio

       --fps <float|rational>
              Specify framerate

       --seek <integer>
              First frame to encode

       --frames <integer>
              Maximum number of frames to encode

       --level <string>
              Specify level (as defined by Annex A)

       --bluray-compat
              Enable compatibility hacks for Blu-ray support

       -v, --verbose
              Print stats for each frame

       --no-progress
              Don't show the progress indicator while encoding

       --quiet
              Quiet Mode

       --log-level <string>
              Specify the maximum level of logging ["info"] - none, error, warning, info, debug

       --psnr Enable PSNR computation

       --ssim Enable SSIM computation

       --threads <integer>
              Force a specific number of threads

       --sliced-threads
              Low-latency but lower-efficiency threading

       --thread-input
              Run Avisynth in its own thread

       --sync-lookahead <integer> Number of buffer frames for threaded lookahead

       --non-deterministic
              Slightly improve quality of SMP, at the cost of repeatability

       --cpu-independent
              Ensure  exact  reproducibility  across  different  cpus, as opposed to letting them
              select different algorithms

       --asm <integer>
              Override CPU detection

       --no-asm
              Disable all CPU optimizations

       --visualize
              Show MB types overlayed on the encoded video

       --dump-yuv <string>
              Save reconstructed frames

       --sps-id <integer>
              Set SPS and PPS id numbers [0]

       --aud  Use access unit delimiters

       --force-cfr
              Force constant framerate timestamp generation

       --tcfile-in <string>
              Force timestamp generation with timecode file

       --tcfile-out <string>
              Output timecode v2 file from input timestamps

       --timebase <int/int>
              Specify timebase numerator and denominator

       <integer>
              Specify timebase numerator for input timecode file or specify timebase  denominator
              for other input

       --dts-compress
              Eliminate initial delay with container DTS hack

       Filtering:

       --vf, --video-filter <filter0>/<filter1>/... Apply video filtering to the input file

              Filter options may be specified in <filter>:<option>=<value> format.

              Available filters: crop:left,top,right,bottom

              removes pixels from the edges of the frame

              resize:[width,height][,sar][,fittobox][,csp][,method]

              resizes  frames  based on the given criteria: - resolution only: resizes and adapts
              sar to avoid stretching - sar only: sets the sar and resizes to avoid stretching  -
              resolution  and  sar:  resizes  to  given  resolution  and sets the sar - fittobox:
              resizes the video based on the desired constraints

              - width, height, both

              - fittobox and sar: same as above except with specified sar - csp: convert  to  the
              given csp. syntax: [name][:depth]

              -  valid  csp names [keep current]: i420, yv12, nv12, i422, yv16, nv16, i444, yv24,
              bgr, bgra, rgb - depth: 8 or 16 bits per pixel [keep current]

              note: not all depths are supported by all  csps.   -  method:  use  resizer  method
              ["bicubic"]

              -  fastbilinear,  bilinear,  bicubic, experimental, point, - area, bicublin, gauss,
              sinc, lanczos, spline

              select_every:step,offset1[,...]

              apply a selection pattern to input frames step: the number of frames in the pattern
              offsets:    the    offset    into    the    step    to    select   a   frame   see:
              http://avisynth.org/mediawiki/Select#SelectEvery

       (libswscale 2.1.0) (libavformat 53.20.0) (ffmpegsource 2.17.0.0) built  on  Feb   5  2012,
       gcc: 4.6.2 configuration: --bit-depth=8 --chroma-format=all x264 license: GPL version 2 or
       later libswscale/libavformat/ffmpegsource license: GPL version 2 or later