Provided by: x264_0.164.3095+gitbaee400-3build1_amd64 bug

NAME

       x264 - fast h264 encoder

DESCRIPTION

       x264 core:164 r3095 baee400 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 (yes).  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 or L-SMASH support (gpac)

       Output bit depth: 8/10

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:
              --direct auto --rc-lookahead 50 --ref 5 --subme 8 --trellis 2

       - 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

       --slices-max <integer>
              Absolute  maximum  slices  per  frame;  overrides slice-max-size/slice-max-mbs when
              necessary

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

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

       --slice-min-mbs <integer> Limit the size of each slice in macroblocks (min)

       --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 - 6: mono - 2D frame
              without any frame packing - 7: tile format - L is on top-left, R split across

       Ratecontrol:

       -q, --qp <integer>
              Force constant QP (0-81, 0=lossless)

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

       --crf <float>
              Quality-based VBR (-12-51) [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 [81]

       --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 - 3: Auto-variance AQ with bias to dark scenes

       --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"] - flat, jvt

       --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, bt2020, smpte428,
              smpte431, smpte432

       --transfer <string>
              Specify  transfer  characteristics  ["undef"]  -  undef,  bt709,  bt470m,  bt470bg,
              smpte170m,

       smpte240m, linear, log100, log316,
              iec61966-2-4,  bt1361e,  iec61966-2-1,  bt2020-10,  bt2020-12, smpte2084, smpte428,
              arib-std-b67

       --colormatrix <string>
              Specify color matrix setting ["???"]  - undef, bt709, fcc, bt470bg, smpte170m,

       smpte240m, GBR, YCgCo, bt2020nc, bt2020c,
              smpte2085, chroma-derived-nc, chroma-derived-c, ICtCp

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

       --mastering-display <string> Specify 'G(x,y)B(x,y)R(x,y)WP(x,y)L(max,min)'
              for primaries, white point, and display brightness

       --cll <string>
              Specify 'max_content,max_frame_average' content light levels

       --alternative-transfer <string> Specify an alternative transfer
              characteristics ["undef"]

              - same values as --transfer

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

       --filler
              Force hard-CBR and generate filler (implied by --nal-hrd cbr)

       --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, mp4

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

       i400, i420, yv12, nv12, nv21, i422, yv16, nv16,
              yuyv, uyvy, 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,  uyvy422,  uyyvyy411,  bgr8,   bgr4,
              bgr4_byte,  rgb8,  rgb4,  rgb4_byte,  nv12, nv21, argb, rgba, abgr, bgra, gray16be,
              gray16le,  yuv440p,  yuvj440p,  yuva420p,  rgb48be,  rgb48le,  rgb565be,  rgb565le,
              rgb555be, rgb555le, bgr565be, bgr565le, bgr555be, bgr555le, vaapi_moco, vaapi_idct,
              vaapi_vld,  yuv420p16le,  yuv420p16be,   yuv422p16le,   yuv422p16be,   yuv444p16le,
              yuv444p16be,  dxva2_vld,  rgb444le,  rgb444be,  bgr444le,  bgr444be,  ya8, bgr48be,
              bgr48le,   yuv420p9be,   yuv420p9le,   yuv420p10be,    yuv420p10le,    yuv422p10be,
              yuv422p10le,   yuv444p9be,   yuv444p9le,   yuv444p10be,   yuv444p10le,  yuv422p9be,
              yuv422p9le,  gbrp,  gbrp9be,  gbrp9le,  gbrp10be,  gbrp10le,  gbrp16be,   gbrp16le,
              yuva422p,    yuva444p,    yuva420p9be,   yuva420p9le,   yuva422p9be,   yuva422p9le,
              yuva444p9be, yuva444p9le, yuva420p10be, yuva420p10le,  yuva422p10be,  yuva422p10le,
              yuva444p10be, yuva444p10le, yuva420p16be, yuva420p16le, yuva422p16be, yuva422p16le,
              yuva444p16be,  yuva444p16le,  vdpau,  xyz12le,  xyz12be,  nv16,   nv20le,   nv20be,
              rgba64be,  rgba64le, bgra64be, bgra64le, yvyu422, ya16be, ya16le, gbrap, gbrap16be,
              gbrap16le, qsv, mmal, d3d11va_vld,  cuda,  0rgb,  rgb0,  0bgr,  bgr0,  yuv420p12be,
              yuv420p12le,   yuv420p14be,  yuv420p14le,  yuv422p12be,  yuv422p12le,  yuv422p14be,
              yuv422p14le,  yuv444p12be,   yuv444p12le,   yuv444p14be,   yuv444p14le,   gbrp12be,
              gbrp12le,  gbrp14be,  gbrp14le,  yuvj411p,  bayer_bggr8,  bayer_rggb8, bayer_gbrg8,
              bayer_grbg8,  bayer_bggr16le,   bayer_bggr16be,   bayer_rggb16le,   bayer_rggb16be,
              bayer_gbrg16le,  bayer_gbrg16be, bayer_grbg16le, bayer_grbg16be, xvmc, yuv440p10le,
              yuv440p10be,  yuv440p12le,  yuv440p12be,  ayuv64le,   ayuv64be,   videotoolbox_vld,
              p010le,  p010be,  gbrap12be, gbrap12le, gbrap10be, gbrap10le, mediacodec, gray12be,
              gray12le, gray10be, gray10le, p016le, p016be, d3d11, gray9be,  gray9le,  gbrpf32be,
              gbrpf32le,   gbrapf32be,   gbrapf32le,   drm_prime,   opencl,  gray14be,  gray14le,
              grayf32be, grayf32le, yuva422p12be, yuva422p12le, yuva444p12be, yuva444p12le, nv24,
              nv42, vulkan, y210be, y210le, x2rgb10le, x2rgb10be

       --output-csp <string>
              Specify output colorspace ["i420"] - i400, i420, i422, i444, rgb

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

       --output-depth <integer> Specify output bit depth

       --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

       --avcintra-class <integer> Use compatibility hacks for AVC-Intra class
              - 50, 100, 200, 300, 480

       --avcintra-flavor <string> AVC-Intra flavor ["panasonic"]
              - panasonic, sony

       --stitchable
              Don't  optimize  headers  based  on  video  content  Ensures ability to recombine a
              segmented encode

       -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

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

       --opencl
              Enable use of OpenCL

       --opencl-clbin <string> Specify path of compiled OpenCL kernel cache

       --opencl-device <integer> Specify OpenCL device ordinal

       --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]: i400, i420, yv12, nv12, nv21, i422,  yv16,  nv16,
              yuyv,  uyvy,  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.nl/index.php/Select#SelectEvery

       (libswscale 5.9.100) (libavformat 58.76.100) (ffmpegsource 3.0.1.0) (gpac  2.0)  built  on
       Jun  10  2022,  gcc: 11.3.0 x264 configuration: --chroma-format=all libx264 configuration:
       --chroma-format=all     x264      license:      GPL      version      2      or      later
       libswscale/libavformat/ffmpegsource license: GPL version 2 or later