.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.4.
.TH X264 "1" "June 2017" "x264 0.152.x" "User Commands"
.SH NAME
x264 \- video encoder for the H.264/MPEG-4 AVC standard
.SH DESCRIPTION
x264 core:152
Syntax: x264 [options] \fB\-o\fR outfile infile
.PP
Infile can be raw (in which case resolution is required),
.IP
or YUV4MPEG (*.y4m),
or Avisynth if compiled with support (no).
or libav* formats if compiled with lavf support (no) or ffms support (yes).
.SS "Outfile type is selected by filename:"
.IP
\&.264 \-> Raw bytestream
\&.mkv \-> Matroska
\&.flv \-> Flash Video
\&.mp4 \-> MP4 if compiled with GPAC or L\-SMASH support (lsmash)
.PP
Output bit depth: 8 (configured at compile time)
.SH OPTIONS
.TP
\fB\-h\fR, \fB\-\-help\fR
List basic options
.TP
\fB\-\-longhelp\fR
List more options
.TP
\fB\-\-fullhelp\fR
List all options
.PP
Example usage:
.IP
Constant quality mode:
.IP
x264 \fB\-\-crf\fR 24 \fB\-o\fR <output> <input>
.IP
Two\-pass with a bitrate of 1000kbps:
.IP
x264 \fB\-\-pass\fR 1 \fB\-\-bitrate\fR 1000 \fB\-o\fR <output> <input>
x264 \fB\-\-pass\fR 2 \fB\-\-bitrate\fR 1000 \fB\-o\fR <output> <input>
.IP
Lossless:
.IP
x264 \fB\-\-qp\fR 0 \fB\-o\fR <output> <input>
.IP
Maximum PSNR at the cost of speed and visual quality:
.IP
x264 \fB\-\-preset\fR placebo \fB\-\-tune\fR psnr \fB\-o\fR <output> <input>
.IP
Constant bitrate at 1000kbps with a 2 second\-buffer:
.IP
x264 \fB\-\-vbv\-bufsize\fR 2000 \fB\-\-bitrate\fR 1000 \fB\-o\fR <output> <input>
.PP
Presets:
.TP
\fB\-\-profile\fR <string>
Force the limits of an H.264 profile
Overrides all settings.
\- baseline:
.TP
\fB\-\-no\-8x8dct\fR \fB\-\-bframes\fR 0 \fB\-\-no\-cabac\fR
\fB\-\-cqm\fR flat \fB\-\-weightp\fR 0
No interlaced.
No lossless.
.TP
\- main:
\fB\-\-no\-8x8dct\fR \fB\-\-cqm\fR flat
No lossless.
.TP
\- high:
No lossless.
.TP
\- high10:
No lossless.
Support for bit depth 8\-10.
.TP
\- high422:
No lossless.
Support for bit depth 8\-10.
Support for 4:2:0/4:2:2 chroma subsampling.
.TP
\- high444:
Support for bit depth 8\-10.
Support for 4:2:0/4:2:2/4:4:4 chroma subsampling.
.TP
\fB\-\-preset\fR <string>
Use a preset to select encoding settings [medium]
Overridden by user settings.
\- ultrafast:
.TP
\fB\-\-no\-8x8dct\fR \fB\-\-aq\-mode\fR 0 \fB\-\-b\-adapt\fR 0
\fB\-\-bframes\fR 0 \fB\-\-no\-cabac\fR \fB\-\-no\-deblock\fR
\fB\-\-no\-mbtree\fR \fB\-\-me\fR dia \fB\-\-no\-mixed\-refs\fR
\fB\-\-partitions\fR none \fB\-\-rc\-lookahead\fR 0 \fB\-\-ref\fR 1
\fB\-\-scenecut\fR 0 \fB\-\-subme\fR 0 \fB\-\-trellis\fR 0
\fB\-\-no\-weightb\fR \fB\-\-weightp\fR 0
.TP
\- superfast:
\fB\-\-no\-mbtree\fR \fB\-\-me\fR dia \fB\-\-no\-mixed\-refs\fR
\fB\-\-partitions\fR i8x8,i4x4 \fB\-\-rc\-lookahead\fR 0
\fB\-\-ref\fR 1 \fB\-\-subme\fR 1 \fB\-\-trellis\fR 0 \fB\-\-weightp\fR 1
.TP
\- veryfast:
\fB\-\-no\-mixed\-refs\fR \fB\-\-rc\-lookahead\fR 10
\fB\-\-ref\fR 1 \fB\-\-subme\fR 2 \fB\-\-trellis\fR 0 \fB\-\-weightp\fR 1
.TP
\- faster:
\fB\-\-no\-mixed\-refs\fR \fB\-\-rc\-lookahead\fR 20
\fB\-\-ref\fR 2 \fB\-\-subme\fR 4 \fB\-\-weightp\fR 1
.TP
\- fast:
\fB\-\-rc\-lookahead\fR 30 \fB\-\-ref\fR 2 \fB\-\-subme\fR 6
\fB\-\-weightp\fR 1
.TP
\- medium:
Default settings apply.
.TP
\- slow:
\fB\-\-direct\fR auto \fB\-\-rc\-lookahead\fR 50 \fB\-\-ref\fR 5
\fB\-\-subme\fR 8 \fB\-\-trellis\fR 2
.TP
\- slower:
\fB\-\-b\-adapt\fR 2 \fB\-\-direct\fR auto \fB\-\-me\fR umh
\fB\-\-partitions\fR all \fB\-\-rc\-lookahead\fR 60
\fB\-\-ref\fR 8 \fB\-\-subme\fR 9 \fB\-\-trellis\fR 2
.TP
\- veryslow:
\fB\-\-b\-adapt\fR 2 \fB\-\-bframes\fR 8 \fB\-\-direct\fR auto
\fB\-\-me\fR umh \fB\-\-merange\fR 24 \fB\-\-partitions\fR all
\fB\-\-ref\fR 16 \fB\-\-subme\fR 10 \fB\-\-trellis\fR 2
\fB\-\-rc\-lookahead\fR 60
.TP
\- placebo:
\fB\-\-bframes\fR 16 \fB\-\-b\-adapt\fR 2 \fB\-\-direct\fR auto
\fB\-\-slow\-firstpass\fR \fB\-\-no\-fast\-pskip\fR
\fB\-\-me\fR tesa \fB\-\-merange\fR 24 \fB\-\-partitions\fR all
\fB\-\-rc\-lookahead\fR 60 \fB\-\-ref\fR 16 \fB\-\-subme\fR 11
\fB\-\-trellis\fR 2
.TP
\fB\-\-tune\fR <string>
Tune the settings for a particular type of source
or situation
.TP
Overridden by user settings.
Multiple tunings are separated by commas.
Only one psy tuning can be used at a time.
\- film (psy tuning):
.TP
\fB\-\-deblock\fR \fB\-1\fR:\-1 \fB\-\-psy\-rd\fR <unset>:0.15
\- animation (psy tuning):
.TP
\fB\-\-bframes\fR {+2} \fB\-\-deblock\fR 1:1
\fB\-\-psy\-rd\fR 0.4:<unset> \fB\-\-aq\-strength\fR 0.6
\fB\-\-ref\fR {Double if >1 else 1}
.TP
\- grain (psy tuning):
\fB\-\-aq\-strength\fR 0.5 \fB\-\-no\-dct\-decimate\fR
\fB\-\-deadzone\-inter\fR 6 \fB\-\-deadzone\-intra\fR 6
\fB\-\-deblock\fR \fB\-2\fR:\-2 \fB\-\-ipratio\fR 1.1
\fB\-\-pbratio\fR 1.1 \fB\-\-psy\-rd\fR <unset>:0.25
\fB\-\-qcomp\fR 0.8
.TP
\- stillimage (psy tuning):
\fB\-\-aq\-strength\fR 1.2 \fB\-\-deblock\fR \fB\-3\fR:\-3
\fB\-\-psy\-rd\fR 2.0:0.7
.TP
\- psnr (psy tuning):
\fB\-\-aq\-mode\fR 0 \fB\-\-no\-psy\fR
.TP
\- ssim (psy tuning):
\fB\-\-aq\-mode\fR 2 \fB\-\-no\-psy\fR
.TP
\- fastdecode:
\fB\-\-no\-cabac\fR \fB\-\-no\-deblock\fR \fB\-\-no\-weightb\fR
\fB\-\-weightp\fR 0
.TP
\- zerolatency:
\fB\-\-bframes\fR 0 \fB\-\-force\-cfr\fR \fB\-\-no\-mbtree\fR
\fB\-\-sync\-lookahead\fR 0 \fB\-\-sliced\-threads\fR
\fB\-\-rc\-lookahead\fR 0
.TP
\fB\-\-slow\-firstpass\fR
Don't force these faster settings with \fB\-\-pass\fR 1:
\fB\-\-no\-8x8dct\fR \fB\-\-me\fR dia \fB\-\-partitions\fR none
\fB\-\-ref\fR 1 \fB\-\-subme\fR {2 if >2 else unchanged}
\fB\-\-trellis\fR 0 \fB\-\-fast\-pskip\fR
.PP
Frame\-type options:
.HP
\fB\-I\fR, \fB\-\-keyint\fR <integer or "infinite"> Maximum GOP size [250]
.TP
\fB\-i\fR, \fB\-\-min\-keyint\fR <integer>
Minimum GOP size [auto]
.TP
\fB\-\-no\-scenecut\fR
Disable adaptive I\-frame decision
.TP
\fB\-\-scenecut\fR <integer>
How aggressively to insert extra I\-frames [40]
.TP
\fB\-\-intra\-refresh\fR
Use Periodic Intra Refresh instead of IDR frames
.TP
\fB\-b\fR, \fB\-\-bframes\fR <integer>
Number of B\-frames between I and P [3]
.TP
\fB\-\-b\-adapt\fR <integer>
Adaptive B\-frame decision method [1]
Higher values may lower threading efficiency.
\- 0: Disabled
\- 1: Fast
\- 2: Optimal (slow with high \fB\-\-bframes\fR)
.TP
\fB\-\-b\-bias\fR <integer>
Influences how often B\-frames are used [0]
.TP
\fB\-\-b\-pyramid\fR <string>
Keep some B\-frames as references [normal]
\- none: Disabled
\- strict: Strictly hierarchical pyramid
\- normal: Non\-strict (not Blu\-ray compatible)
.TP
\fB\-\-open\-gop\fR
Use recovery points to close GOPs
Only available with b\-frames
.TP
\fB\-\-no\-cabac\fR
Disable CABAC
.TP
\fB\-r\fR, \fB\-\-ref\fR <integer>
Number of reference frames [3]
.TP
\fB\-\-no\-deblock\fR
Disable loop filter
.TP
\fB\-f\fR, \fB\-\-deblock\fR <alpha:beta>
Loop filter parameters [0:0]
.TP
\fB\-\-slices\fR <integer>
Number of slices per frame; forces rectangular
slices and is overridden by other slicing options
.TP
\fB\-\-slices\-max\fR <integer>
Absolute maximum slices per frame; overrides
slice\-max\-size/slice\-max\-mbs when necessary
.HP
\fB\-\-slice\-max\-size\fR <integer> Limit the size of each slice in bytes
.HP
\fB\-\-slice\-max\-mbs\fR <integer> Limit the size of each slice in macroblocks (max)
.HP
\fB\-\-slice\-min\-mbs\fR <integer> Limit the size of each slice in macroblocks (min)
.TP
\fB\-\-tff\fR
Enable interlaced mode (top field first)
.TP
\fB\-\-bff\fR
Enable interlaced mode (bottom field first)
.TP
\fB\-\-constrained\-intra\fR
Enable constrained intra prediction.
.TP
\fB\-\-pulldown\fR <string>
Use soft pulldown to change frame rate
\- none, 22, 32, 64, double, triple, euro (requires cfr input)
.TP
\fB\-\-fake\-interlaced\fR
Flag stream as interlaced but encode progressive.
Makes it possible to encode 25p and 30p Blu\-Ray
streams. Ignored in interlaced mode.
.TP
\fB\-\-frame\-packing\fR <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
.PP
Ratecontrol:
.TP
\fB\-q\fR, \fB\-\-qp\fR <integer>
Force constant QP (0\-69, 0=lossless)
.TP
\fB\-B\fR, \fB\-\-bitrate\fR <integer>
Set bitrate (kbit/s)
.TP
\fB\-\-crf\fR <float>
Quality\-based VBR (0\-51) [23.0]
.HP
\fB\-\-rc\-lookahead\fR <integer> Number of frames for frametype lookahead [40]
.HP
\fB\-\-vbv\-maxrate\fR <integer> Max local bitrate (kbit/s) [0]
.HP
\fB\-\-vbv\-bufsize\fR <integer> Set size of the VBV buffer (kbit) [0]
.TP
\fB\-\-vbv\-init\fR <float>
Initial VBV buffer occupancy [0.9]
.TP
\fB\-\-crf\-max\fR <float>
With CRF+VBV, limit RF to this value
May cause VBV underflows!
.TP
\fB\-\-qpmin\fR <integer>
Set min QP [0]
.TP
\fB\-\-qpmax\fR <integer>
Set max QP [69]
.TP
\fB\-\-qpstep\fR <integer>
Set max QP step [4]
.TP
\fB\-\-ratetol\fR <float>
Tolerance of ABR ratecontrol and VBV [1.0]
.TP
\fB\-\-ipratio\fR <float>
QP factor between I and P [1.40]
.TP
\fB\-\-pbratio\fR <float>
QP factor between P and B [1.30]
.TP
\fB\-\-chroma\-qp\-offset\fR <integer>
QP difference between chroma and luma [0]
.TP
\fB\-\-aq\-mode\fR <integer>
AQ method [1]
\- 0: Disabled
\- 1: Variance AQ (complexity mask)
\- 2: Auto\-variance AQ
\- 3: Auto\-variance AQ with bias to dark scenes
.TP
\fB\-\-aq\-strength\fR <float>
Reduces blocking and blurring in flat and
textured areas. [1.0]
.TP
\fB\-p\fR, \fB\-\-pass\fR <integer>
Enable multipass ratecontrol
\- 1: First pass, creates stats file
\- 2: Last pass, does not overwrite stats file
\- 3: Nth pass, overwrites stats file
.TP
\fB\-\-stats\fR <string>
Filename for 2 pass stats ["x264_2pass.log"]
.TP
\fB\-\-no\-mbtree\fR
Disable mb\-tree ratecontrol.
.TP
\fB\-\-qcomp\fR <float>
QP curve compression [0.60]
.TP
\fB\-\-cplxblur\fR <float>
Reduce fluctuations in QP (before curve compression) [20.0]
.TP
\fB\-\-qblur\fR <float>
Reduce fluctuations in QP (after curve compression) [0.5]
.TP
\fB\-\-zones\fR <zone0>/<zone1>/...
Tweak the bitrate of regions of the video
Each zone is of the form
.TP
<start frame>,<end frame>,<option>
where <option> is either
.TP
q=<integer> (force QP)
or  b=<float> (bitrate multiplier)
.TP
\fB\-\-qpfile\fR <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.
.TP
K=<I or i> depending on open\-gop setting
QPs are restricted by qpmin/qpmax.
.PP
Analysis:
.TP
\fB\-A\fR, \fB\-\-partitions\fR <string>
Partitions to consider ["p8x8,b8x8,i8x8,i4x4"]
\- p8x8, p4x4, b8x8, i8x8, i4x4
\- none, all
(p4x4 requires p8x8. i8x8 requires \fB\-\-8x8dct\fR.)
.TP
\fB\-\-direct\fR <string>
Direct MV prediction mode ["spatial"]
\- none, spatial, temporal, auto
.TP
\fB\-\-no\-weightb\fR
Disable weighted prediction for B\-frames
.TP
\fB\-\-weightp\fR <integer>
Weighted prediction for P\-frames [2]
\- 0: Disabled
\- 1: Weighted refs
\- 2: Weighted refs + Duplicates
.TP
\fB\-\-me\fR <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)
.TP
\fB\-\-merange\fR <integer>
Maximum motion vector search range [16]
.TP
\fB\-\-mvrange\fR <integer>
Maximum motion vector length [\-1 (auto)]
.TP
\fB\-\-mvrange\-thread\fR <int>
Minimum buffer between threads [\-1 (auto)]
.TP
\fB\-m\fR, \fB\-\-subme\fR <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
.TP
\fB\-\-psy\-rd\fR <float:float>
Strength of psychovisual optimization ["1.0:0.0"]
#1: RD (requires subme>=6)
#2: Trellis (requires trellis, experimental)
.TP
\fB\-\-no\-psy\fR
Disable all visual optimizations that worsen
both PSNR and SSIM.
.TP
\fB\-\-no\-mixed\-refs\fR
Don't decide references on a per partition basis
.TP
\fB\-\-no\-chroma\-me\fR
Ignore chroma in motion estimation
.TP
\fB\-\-no\-8x8dct\fR
Disable adaptive spatial transform size
.TP
\fB\-t\fR, \fB\-\-trellis\fR <integer>
Trellis RD quantization. [1]
\- 0: disabled
\- 1: enabled only on the final encode of a MB
\- 2: enabled on all mode decisions
.TP
\fB\-\-no\-fast\-pskip\fR
Disables early SKIP detection on P\-frames
.TP
\fB\-\-no\-dct\-decimate\fR
Disables coefficient thresholding on P\-frames
.TP
\fB\-\-nr\fR <integer>
Noise reduction [0]
.TP
\fB\-\-deadzone\-inter\fR <int>
Set the size of the inter luma quantization deadzone [21]
.TP
\fB\-\-deadzone\-intra\fR <int>
Set the size of the intra luma quantization deadzone [11]
Deadzones should be in the range 0 \- 32.
.TP
\fB\-\-cqm\fR <string>
Preset quant matrices ["flat"]
\- jvt, flat
.TP
\fB\-\-cqmfile\fR <string>
Read custom quant matrices from a JM\-compatible file
Overrides any other \fB\-\-cqm\fR* options.
.TP
\fB\-\-cqm4\fR <list>
Set all 4x4 quant matrices
Takes a comma\-separated list of 16 integers.
.TP
\fB\-\-cqm8\fR <list>
Set all 8x8 quant matrices
Takes a comma\-separated list of 64 integers.
.TP
\fB\-\-cqm4i\fR, \fB\-\-cqm4p\fR, \fB\-\-cqm8i\fR, \fB\-\-cqm8p\fR <list>
Set both luma and chroma quant matrices
.TP
\fB\-\-cqm4iy\fR, \fB\-\-cqm4ic\fR, \fB\-\-cqm4py\fR, \fB\-\-cqm4pc\fR <list>
Set individual quant matrices
.PP
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.
.TP
\fB\-\-overscan\fR <string>
Specify crop overscan setting ["undef"]
\- undef, show, crop
.TP
\fB\-\-videoformat\fR <string>
Specify video format ["undef"]
\- component, pal, ntsc, secam, mac, undef
.TP
\fB\-\-range\fR <string>
Specify color range ["auto"]
\- auto, tv, pc
.TP
\fB\-\-colorprim\fR <string>
Specify color primaries ["undef"]
\- undef, bt709, bt470m, bt470bg, smpte170m,
.TP
smpte240m, film, bt2020, smpte428,
smpte431, smpte432
.TP
\fB\-\-transfer\fR <string>
Specify transfer characteristics ["undef"]
\- undef, bt709, bt470m, bt470bg, smpte170m,
.TP
smpte240m, linear, log100, log316,
iec61966\-2\-4, bt1361e, iec61966\-2\-1,
bt2020\-10, bt2020\-12, smpte2084, smpte428
.TP
\fB\-\-colormatrix\fR <string>
Specify color matrix setting ["???"]
\- undef, bt709, fcc, bt470bg, smpte170m,
.TP
smpte240m, GBR, YCgCo, bt2020nc, bt2020c,
smpte2085
.TP
\fB\-\-chromaloc\fR <integer>
Specify chroma sample location (0 to 5) [0]
.TP
\fB\-\-nal\-hrd\fR <string>
Signal HRD information (requires vbv\-bufsize)
\- none, vbr, cbr (cbr not allowed in .mp4)
.TP
\fB\-\-filler\fR
Force hard\-CBR and generate filler (implied by
\fB\-\-nal\-hrd\fR cbr)
.TP
\fB\-\-pic\-struct\fR
Force pic_struct in Picture Timing SEI
.TP
\fB\-\-crop\-rect\fR <string>
Add 'left,top,right,bottom' to the bitstream\-level
cropping rectangle
.PP
Input/Output:
.TP
\fB\-o\fR, \fB\-\-output\fR <string>
Specify output file
.TP
\fB\-\-muxer\fR <string>
Specify output container format ["auto"]
\- auto, raw, mkv, flv, mp4
.TP
\fB\-\-demuxer\fR <string>
Specify input container format ["auto"]
\- auto, raw, y4m, ffms
.TP
\fB\-\-input\-fmt\fR <string>
Specify input file format (requires lavf support)
.TP
\fB\-\-input\-csp\fR <string>
Specify input colorspace format for raw input
\- valid csps for `raw' demuxer:
.TP
i420, yv12, nv12, nv21, i422, yv16, nv16, yuyv,
uyvy, i444, yv24, bgr, bgra, rgb
.TP
\fB\-\-output\-csp\fR <string>
Specify output colorspace ["i420"]
\- i420, i422, i444, rgb
.HP
\fB\-\-input\-depth\fR <integer> Specify input bit depth for raw input
.TP
\fB\-\-input\-range\fR <string>
Specify input color range ["auto"]
\- auto, tv, pc
.TP
\fB\-\-input\-res\fR <intxint>
Specify input resolution (width x height)
.TP
\fB\-\-index\fR <string>
Filename for input index file
.TP
\fB\-\-sar\fR width:height
Specify Sample Aspect Ratio
.TP
\fB\-\-fps\fR <float|rational>
Specify framerate
.TP
\fB\-\-seek\fR <integer>
First frame to encode
.TP
\fB\-\-frames\fR <integer>
Maximum number of frames to encode
.TP
\fB\-\-level\fR <string>
Specify level (as defined by Annex A)
.TP
\fB\-\-bluray\-compat\fR
Enable compatibility hacks for Blu\-ray support
.TP
\fB\-\-avcintra\-class\fR <integer> Use compatibility hacks for AVC\-Intra class
\- 50, 100, 200
.TP
\fB\-\-stitchable\fR
Don't optimize headers based on video content
Ensures ability to recombine a segmented encode
.TP
\fB\-v\fR, \fB\-\-verbose\fR
Print stats for each frame
.TP
\fB\-\-no\-progress\fR
Don't show the progress indicator while encoding
.TP
\fB\-\-quiet\fR
Quiet Mode
.TP
\fB\-\-log\-level\fR <string>
Specify the maximum level of logging ["info"]
\- none, error, warning, info, debug
.TP
\fB\-\-psnr\fR
Enable PSNR computation
.TP
\fB\-\-ssim\fR
Enable SSIM computation
.TP
\fB\-\-threads\fR <integer>
Force a specific number of threads
.HP
\fB\-\-lookahead\-threads\fR <integer> Force a specific number of lookahead threads
.TP
\fB\-\-sliced\-threads\fR
Low\-latency but lower\-efficiency threading
.TP
\fB\-\-thread\-input\fR
Run Avisynth in its own thread
.HP
\fB\-\-sync\-lookahead\fR <integer> Number of buffer frames for threaded lookahead
.TP
\fB\-\-non\-deterministic\fR
Slightly improve quality of SMP, at the cost of repeatability
.TP
\fB\-\-cpu\-independent\fR
Ensure exact reproducibility across different cpus,
as opposed to letting them select different algorithms
.TP
\fB\-\-asm\fR <integer>
Override CPU detection
.TP
\fB\-\-no\-asm\fR
Disable all CPU optimizations
.TP
\fB\-\-opencl\fR
Enable use of OpenCL
.HP
\fB\-\-opencl\-clbin\fR <string> Specify path of compiled OpenCL kernel cache
.HP
\fB\-\-opencl\-device\fR <integer> Specify OpenCL device ordinal
.TP
\fB\-\-dump\-yuv\fR <string>
Save reconstructed frames
.TP
\fB\-\-sps\-id\fR <integer>
Set SPS and PPS id numbers [0]
.TP
\fB\-\-aud\fR
Use access unit delimiters
.TP
\fB\-\-force\-cfr\fR
Force constant framerate timestamp generation
.TP
\fB\-\-tcfile\-in\fR <string>
Force timestamp generation with timecode file
.TP
\fB\-\-tcfile\-out\fR <string>
Output timecode v2 file from input timestamps
.TP
\fB\-\-timebase\fR <int/int>
Specify timebase numerator and denominator
.TP
<integer>
Specify timebase numerator for input timecode file
or specify timebase denominator for other input
.TP
\fB\-\-dts\-compress\fR
Eliminate initial delay with container DTS hack
.PP
Filtering:
.HP
\fB\-\-vf\fR, \fB\-\-video\-filter\fR <filter0>/<filter1>/... Apply video filtering to the input file
.IP
Filter options may be specified in <filter>:<option>=<value> format.
.IP
Available filters:
crop:left,top,right,bottom
.IP
removes pixels from the edges of the frame
.IP
resize:[width,height][,sar][,fittobox][,csp][,method]
.IP
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
.IP
\- width, height, both
.IP
\- fittobox and sar: same as above except with specified sar
\- csp: convert to the given csp. syntax: [name][:depth]
.IP
\- valid csp names [keep current]: i420, yv12, nv12, nv21, i422, yv16, nv16, yuyv, uyvy, i444, yv24, bgr, bgra, rgb
\- depth: 8 or 16 bits per pixel [keep current]
.IP
note: not all depths are supported by all csps.
\- method: use resizer method ["bicubic"]
.IP
\- fastbilinear, bilinear, bicubic, experimental, point,
\- area, bicublin, gauss, sinc, lanczos, spline
.IP
select_every:step,offset1[,...]
.IP
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
.PP
(libswscale 4.6.100)
(ffmpegsource 2.23.0.0)
built on Jun 27 2017, gcc: 6.3.0 20170618
x264 configuration: \fB\-\-bit\-depth\fR=\fI\,8\/\fR \fB\-\-chroma\-format\fR=\fI\,all\/\fR
libx264 configuration: \fB\-\-bit\-depth\fR=\fI\,8\/\fR \fB\-\-chroma\-format\fR=\fI\,all\/\fR
x264 license: GPL version 2 or later
libswscale/ffmpegsource license: nonfree and unredistributable
WARNING: This binary is unredistributable!
