Provided by: aom-tools_3.8.2-2ubuntu0.1_amd64 
NAME
aomenc - AOMedia Project AV1 Encoder
SYNOPSIS
aomenc <options> -o dst_filename src_filename
OPTIONS
--help Show usage options and exit
-c <arg>, --cfg=<arg>
Config file to use
-D, --debug
Debug mode (makes output deterministic)
-o <arg>, --output=<arg>
Output filename
--codec=<arg>
Codec to use
-p <arg>, --passes=<arg>
Number of passes (1/2/3)
--pass=<arg>
Pass to execute (1/2/3)
--fpf=<arg>
First pass statistics file name
--limit=<arg>
Stop encoding after n input frames
--skip=<arg>
Skip the first n input frames
--good Use Good Quality Deadline
--rt Use Realtime Quality Deadline
--allintra
Use all intra mode
-q, --quiet
Do not print encode progress
-v, --verbose
Show encoder parameters
--psnr=<arg>
Show PSNR in status line (0: Disable PSNR status line display, 1: PSNR calculated using input
bit-depth (default), 2: PSNR calculated using stream bit-depth); takes default option when
arguments are not specified
--webm Output WebM (default when WebM IO is enabled)
--ivf Output IVF
--obu Output OBU
--q-hist=<arg>
Show quantizer histogram (n-buckets)
--rate-hist=<arg>
Show rate histogram (n-buckets)
--disable-warnings
Disable warnings about potentially incorrect encode settings
-y, --disable-warning-prompt
Display warnings, but do not prompt user to continue
--test-decode=<arg>
Test encode/decode mismatch
off, fatal, warn
Encoder Global Options:
--nv12 Input file is NV12
--yv12 Input file is YV12
--i420 Input file is I420 (default)
--i422 Input file is I422
--i444 Input file is I444
-u <arg>, --usage=<arg>
Usage profile number to use (0: good, 1: rt, 2: allintra)
-t <arg>, --threads=<arg>
Max number of threads to use
--profile=<arg>
Bitstream profile number to use
-w <arg>, --width=<arg>
Frame width
-h <arg>, --height=<arg>
Frame height
--forced_max_frame_width=<arg>
Maximum frame width value to force
--forced_max_frame_height=<arg>
Maximum frame height value to force
--stereo-mode=<arg>
Stereo 3D video format
mono, left-right, bottom-top, top-bottom, right-left
--timebase=<arg>
Output timestamp precision (fractional seconds)
--fps=<arg>
Stream frame rate (rate/scale)
--global-error-resilient=<arg>
Enable global error resiliency features
-b <arg>, --bit-depth=<arg>
Bit depth for codec 8, 10, 12
--input-bit-depth=<arg>
Bit depth of input
--lag-in-frames=<arg>
Max number of frames to lag
--large-scale-tile=<arg>
Large scale tile coding (0: off (default), 1: on (ivf output only))
--monochrome
Monochrome video (no chroma planes)
--full-still-picture-hdr
Use full header for still picture
--use-16bit-internal
Force use of 16-bit pipeline
--annexb=<arg>
Save as Annex-B
Rate Control Options:
--drop-frame=<arg>
Temporal resampling threshold (buf %)
--resize-mode=<arg>
Frame resize mode (0: off (default), 1: fixed, 2: random, 3: dynamic)
--resize-denominator=<arg>
Frame resize denominator
--resize-kf-denominator=<arg>
Frame resize keyframe denominator
--superres-mode=<arg>
Frame super-resolution mode (0: disabled (default), 1: fixed, 2: random, 3: qthresh, 4: auto)
--superres-denominator=<arg>
Frame super-resolution denominator
--superres-kf-denominator=<arg>
Frame super-resolution keyframe denominator
--superres-qthresh=<arg>
Frame super-resolution qindex threshold
--superres-kf-qthresh=<arg> Frame super-resolution keyframe qindex threshold --end-usage=<arg>
Rate control mode
vbr, cbr, cq, q
--target-bitrate=<arg>
Bitrate (kbps)
--min-q=<arg>
Minimum (best) quantizer
--max-q=<arg>
Maximum (worst) quantizer
--undershoot-pct=<arg>
Datarate undershoot (min) target (%)
--overshoot-pct=<arg>
Datarate overshoot (max) target (%)
--buf-sz=<arg>
Client buffer size (ms)
--buf-initial-sz=<arg>
Client initial buffer size (ms)
--buf-optimal-sz=<arg>
Client optimal buffer size (ms)
--bias-pct=<arg>
CBR/VBR bias (0=CBR, 100=VBR)
--minsection-pct=<arg>
GOP min bitrate (% of target)
--maxsection-pct=<arg>
GOP max bitrate (% of target)
Keyframe Placement Options:
--enable-fwd-kf=<arg>
Enable forward reference keyframes
--kf-min-dist=<arg>
Minimum keyframe interval (frames)
--kf-max-dist=<arg>
Maximum keyframe interval (frames)
--disable-kf
Disable keyframe placement
--sframe-dist=<arg>
S-Frame interval (frames)
--sframe-mode=<arg>
S-Frame insertion mode (1..2)
AV1 Specific Options:
--cpu-used=<arg>
Speed setting (0..6 in good mode, 5..10 in realtime mode, 0..9 in all intra mode)
--auto-alt-ref=<arg>
Enable automatic alt reference frames
--sharpness=<arg>
Bias towards block sharpness in rate-distortion optimization of transform coefficients (0..7),
default is 0
--static-thresh=<arg>
Motion detection threshold
--row-mt=<arg>
Enable row based multi-threading (0: off, 1: on (default))
--fp-mt=<arg>
Enable frame parallel multi-threading (0: off (default), 1: on)
--tile-columns=<arg>
Number of tile columns to use, log2
--tile-rows=<arg>
Number of tile rows to use, log2
--enable-tpl-model=<arg>
RDO based on frame temporal dependency (0: off, 1: backward source based); required for deltaq
mode
--enable-keyframe-filtering=<arg>
Apply temporal filtering on key frame (0: no filter, 1: filter without overlay (default), 2:
filter with overlay - experimental, may break random access in players)
--arnr-maxframes=<arg>
AltRef max frames (0..15)
--arnr-strength=<arg>
AltRef filter strength (0..6)
--tune=<arg>
Distortion metric tuned with
psnr, ssim, vmaf_with_preprocessing, vmaf_without_preprocessing, vmaf, vmaf_neg, butteraugli,
vmaf_saliency_map
--cq-level=<arg>
Constant/Constrained Quality level
--max-intra-rate=<arg>
Max I-frame bitrate (pct)
--max-inter-rate=<arg>
Max P-frame bitrate (pct)
--gf-cbr-boost=<arg>
Boost for Golden Frame in CBR mode (pct)
--lossless=<arg>
Lossless mode (0: false (default), 1: true)
--enable-cdef=<arg>
Enable the constrained directional enhancement filter (0: false, 1: true (default), 2: disable for
non-reference frames)
--enable-restoration=<arg>
Enable the loop restoration filter (0: false (default in realtime mode), 1: true (default in
non-realtime mode))
--enable-rect-partitions=<arg>
Enable rectangular partitions (0: false, 1: true (default))
--enable-ab-partitions=<arg>
Enable ab partitions (0: false, 1: true (default))
--enable-1to4-partitions=<arg>
Enable 1:4 and 4:1 partitions (0: false, 1: true (default))
--min-partition-size=<arg>
Set min partition size (4:4x4, 8:8x8, 16:16x16, 32:32x32, 64:64x64, 128:128x128); with 4k+
resolutions or higher speed settings, min partition size will have a minimum of 8
--max-partition-size=<arg>
Set max partition size (4:4x4, 8:8x8, 16:16x16, 32:32x32, 64:64x64, 128:128x128)
--enable-dual-filter=<arg>
Enable dual filter (0: false, 1: true (default))
--enable-chroma-deltaq=<arg>
Enable chroma delta quant (0: false (default), 1: true)
--enable-intra-edge-filter=<arg>
Enable intra edge filtering (0: false, 1: true (default))
--enable-order-hint=<arg>
Enable order hint (0: false, 1: true (default))
--enable-tx64=<arg>
Enable 64-pt transform (0: false, 1: true (default))
--enable-flip-idtx=<arg>
Enable extended transform type (0: false, 1: true (default)) including FLIPADST_DCT, DCT_FLIPADST,
FLIPADST_FLIPADST, ADST_FLIPADST, FLIPADST_ADST, IDTX, V_DCT, H_DCT, V_ADST, H_ADST, V_FLIPADST,
H_FLIPADST
--enable-rect-tx=<arg>
Enable rectangular transform (0: false, 1: true (default))
--enable-dist-wtd-comp=<arg>
Enable distance-weighted compound (0: false, 1: true (default))
--enable-masked-comp=<arg>
Enable masked (wedge/diff-wtd) compound (0: false, 1: true (default))
--enable-onesided-comp=<arg>
Enable one sided compound (0: false, 1: true (default))
--enable-interintra-comp=<arg>
Enable interintra compound (0: false, 1: true (default))
--enable-smooth-interintra=<arg>
Enable smooth interintra mode (0: false, 1: true (default))
--enable-diff-wtd-comp=<arg>
Enable difference-weighted compound (0: false, 1: true (default))
--enable-interinter-wedge=<arg>
Enable interinter wedge compound (0: false, 1: true (default))
--enable-interintra-wedge=<arg>
Enable interintra wedge compound (0: false, 1: true (default))
--enable-global-motion=<arg>
Enable global motion (0: false, 1: true (default))
--enable-warped-motion=<arg>
Enable local warped motion (0: false, 1: true (default))
--enable-filter-intra=<arg> Enable filter intra prediction mode (0: false, 1: true (default))
--enable-smooth-intra=<arg> Enable smooth intra prediction modes (0: false, 1: true (default))
--enable-paeth-intra=<arg> Enable Paeth intra prediction mode (0: false, 1: true (default))
--enable-cfl-intra=<arg> Enable chroma from luma intra prediction mode (0: false, 1: true
(default)) --enable-diagonal-intra=<arg>
Enable diagonal (D45 to D203) intra prediction modes, which are a subset of directional modes; has
no effect if enable-directional-intra is 0 (0: false, 1: true (default))
--force-video-mode=<arg>
Force video mode even for a single frame (0: false (default), 1: true)
--enable-obmc=<arg>
Enable OBMC (0: false, 1: true (default))
--enable-overlay=<arg>
Enable coding overlay frames (0: false, 1: true (default))
--enable-palette=<arg>
Enable palette prediction mode (0: false, 1: true (default))
--enable-intrabc=<arg>
Enable intra block copy prediction mode (0: false, 1: true (default))
--enable-angle-delta=<arg>
Enable intra angle delta (0: false, 1: true (default))
--disable-trellis-quant=<arg>
Disable trellis optimization of quantized coefficients (0: false 1: true 2: true for rd search 3:
true for estimate yrd search (default))
--enable-qm=<arg>
Enable quantisation matrices (0: false (default), 1: true)
--qm-min=<arg>
Min quant matrix flatness (0..15), default is 8
--qm-max=<arg>
Max quant matrix flatness (0..15), default is 15
--reduced-tx-type-set=<arg> Use reduced set of transform types --use-intra-dct-only=<arg> Use DCT
only for INTRA modes --use-inter-dct-only=<arg> Use DCT only for INTER modes
--use-intra-default-tx-only=<arg>
Use Default-transform only for INTRA modes
--quant-b-adapt=<arg>
Use adaptive quantize_b
--coeff-cost-upd-freq=<arg> Update freq for coeff costs. 0: SB, 1: SB Row per Tile, 2: Tile, 3:
Off --mode-cost-upd-freq=<arg> Update freq for mode costs. 0: SB, 1: SB Row per Tile, 2: Tile, 3:
Off --mv-cost-upd-freq=<arg> Update freq for mv costs. 0: SB, 1: SB Row per Tile, 2: Tile, 3:
Off --frame-parallel=<arg> Enable frame parallel decodability features (0: false (default),
1: true) --error-resilient=<arg> Enable error resilient features (0: false (default), 1: true)
--aq-mode=<arg> Adaptive quantization mode (0: off (default), 1: variance 2:
complexity, 3: cyclic refresh) --deltaq-mode=<arg> Delta qindex mode (0: off, 1: deltaq
objective (default), 2: deltaq placeholder, 3: key frame visual quality, 4: user rating based
visual quality optimization); requires --enable-tpl-model=1 --deltaq-strength=<arg> Deltaq
strength for --deltaq-mode=4 (%) --delta-lf-mode=<arg> Enable delta-lf-mode (0: off
(default), 1: on) --frame-boost=<arg> Enable frame periodic boost (0: off (default), 1:
on) --noise-sensitivity=<arg> Noise sensitivity (frames to blur) --tune-content=<arg>
Tune content type
default, screen, film
--cdf-update-mode=<arg>
CDF update mode for entropy coding (0: no CDF update, 1: update CDF on all frames (default), 2:
selectively update CDF on some frames)
--color-primaries=<arg>
Color primaries (CICP) of input content:
bt709, unspecified, bt601, bt470m, bt470bg, smpte240, film, bt2020, xyz, smpte431, smpte432,
ebu3213
--transfer-characteristics=<arg>
Transfer characteristics (CICP) of input content:
unspecified, bt709, bt470m, bt470bg, bt601, smpte240, lin, log100, log100sq10, iec61966, bt1361,
srgb, bt2020-10bit, bt2020-12bit, smpte2084, hlg, smpte428
--matrix-coefficients=<arg> Matrix coefficients (CICP) of input content:
identity, bt709, unspecified, fcc73, bt470bg, bt601, smpte240, ycgco, bt2020ncl, bt2020cl,
smpte2085, chromncl, chromcl, ictcp
--chroma-sample-position=<arg>
The chroma sample position when chroma 4:2:0 is signaled:
unknown, vertical, colocated
--min-gf-interval=<arg>
Min gf/arf frame interval (default 0, indicating in-built behavior)
--max-gf-interval=<arg>
Max gf/arf frame interval (default 0, indicating in-built behavior)
--gf-min-pyr-height=<arg>
Min height for GF group pyramid structure (0 (default) to 5)
--gf-max-pyr-height=<arg>
Maximum height for GF group pyramid structure (0 to 5 (default))
--sb-size=<arg>
Superblock size to use
dynamic, 64, 128
--num-tile-groups=<arg>
Maximum number of tile groups, default is 1
--mtu-size=<arg>
MTU size for a tile group, default is 0 (no MTU targeting), overrides maximum number of tile
groups
--timing-info=<arg>
Signal timing info in the bitstream (model only works for no hidden frames, no super-res yet):
unspecified, constant, model
--film-grain-test=<arg>
Film grain test vectors (0: none (default), 1: test-1 2: test-2, ... 16: test-16)
--film-grain-table=<arg>
Path to file containing film grain parameters
--denoise-noise-level=<arg> Amount of noise (from 0 = don't denoise, to 50)
--denoise-block-size=<arg> Denoise block size (default = 32) --enable-dnl-denoising=<arg>
Apply denoising to the frame being encoded when denoise-noise-level is enabled (0: false, 1: true
(default))
--max-reference-frames=<arg>
Maximum number of reference frames allowed per frame (3 to 7 (default))
--reduced-reference-set=<arg>
Use reduced set of single and compound references (0: off (default), 1: on)
--enable-ref-frame-mvs=<arg>
Enable temporal mv prediction (default is 1)
--target-seq-level-idx=<arg>
Target sequence level index. Possible values are in the form of "ABxy". AB: Operating point (OP)
index, xy: Target level index for the OP. E.g. "0" means target level index 0 (2.0) for the 0th
OP, "1019" means target level index 19 (6.3) for the 10th OP.
--set-tier-mask=<arg>
Set bit mask to specify which tier each of the 32 possible operating points conforms to. Bit value
0 (default): Main Tier, 1: High Tier.
--min-cr=<arg>
Set minimum compression ratio. Take integer values. Default is 0. If non-zero, encoder will try to
keep the compression ratio of each frame to be higher than the given value divided by 100.
--vbr-corpus-complexity-lap=<arg>
Set average corpus complexity per mb for single pass VBR using lap. (0..10000), default is 0
--input-chroma-subsampling-x=<arg>
Chroma subsampling x value
--input-chroma-subsampling-y=<arg>
Chroma subsampling y value
--dv-cost-upd-freq=<arg>
Update freq for dv costs. 0: SB, 1: SB Row per Tile, 2: Tile, 3: Off
--partition-info-path=<arg> Partition information read and write path
--enable-rate-guide-deltaq=<arg>
Enable rate guide deltaq (1), by default off (0). It requires --deltaq-mode=3. If turned on, it
requires an input file specified by --rate-distribution-info.
--rate-distribution-info=<arg>
Rate distribution information input.It requires --enable-rate-guide-deltaq=1.
--enable-directional-intra=<arg>
Enable directional intra prediction modes (0: false, 1: true (default))
--enable-tx-size-search=<arg>
Enable transform size search to find the best size for each block. If false, transforms always
have the largest possible size (0: false, 1: true (default)). Ignored in non rd pick mode in
real-time coding.
--loopfilter-control=<arg>
Control loop filtering (0: Loopfilter disabled for all frames, 1: Enable loopfilter for all frames
(default), 2: Disable loopfilter for non-reference frames, 3: Disable loopfilter for frames with
low motion)
--auto-intra-tools-off=<arg>
Automatically turn off several intra coding tools for allintra mode; only in effect if
--deltaq-mode=3
-p <arg>, --passes=<arg>
Number of passes (1/2/3)
--two-pass-output=<arg>
The output file for the first two passes for three-pass encoding
-spf <arg>, --second-pass-log=<arg>
Log file from second pass
--fwd-kf-dist=<arg>
Set distance between forward keyframes. A value of -1 (default) means no repetitive forward
keyframes.
--strict-level-conformance=<arg>
When set to 1, exit the encoder when it fails to encode to a given target level
--sb-qp-sweep=<arg>
When set to 1, enable the superblock level qp sweep for a given lambda to minimize the rdcost.
--dist-metric=<arg>
Distortion metric to use for in-block optimization
psnr, qm-psnr
--kf-max-pyr-height=<arg>
Maximum height of pyramid structure used for the GOP starting with a key frame (-1 to 5). When set
to -1 (default), it does not have any effect. The actual maximum pyramid height will be the
minimum of this value and the value of gf_max_pyr_height.
Stream timebase (--timebase):
The desired precision of timestamps in the output, expressed in fractional seconds. Default is
1/1000.
Included encoders:
av1 - AOMedia Project AV1 Encoder v3.7.0 (default)
Use --codec to switch to a non-default encoder.
aomenc 3.7.0~rc3 August 2023 AOMENC(1)