x265 [info]: HEVC encoder version 4.2 x265 [info]: build info [Linux][GCC 14.4.0][64 bit] 8bit+10bit+12bit Syntax: x265 [options] infile [-o] outfile infile can be YUV or Y4M outfile is raw HEVC bitstream Executable Options: -h/--help Show this help text and exit --fullhelp Show all options and exit -V/--version Show version info and exit Output Options: -o/--output Bitstream output file name -D/--output-depth 8|10|12 Output bit depth (also internal bit depth). Default 8 --log-level Logging level: none error warning info debug full. Default info --no-progress Disable CLI progress reports --csv Comma separated log file, if csv-log-level > 0 frame level statistics, else one line per run --csv-log-level Level of csv logging, if csv-log-level > 0 frame level statistics, else one line per run: 0-2 Input Options: --input Raw YUV or Y4M input file name. `-` for stdin --fps Source frame rate (float or num/denom), auto-detected if Y4M --input-res WxH Source picture size [w x h], auto-detected if Y4M --dolby-vision-profile Specifies Dolby Vision profile ID. Currently, only profile 5, profile 8.1 and profile 8.2 are enabled. Specified as '5' or '50'. Default 0 (disabled). --dolby-vision-rpu File containing Dolby Vision RPU metadata. If given, x265's Dolby Vision metadata parser will fill the RPU field of input pictures with the metadata read from the file. Default NULL (disabled). --nalu-file Text file containing SEI messages in the following format : / -f/--frames Maximum number of frames to encode. Default all --seek First frame to encode --[no-]field Enable or disable field coding. Default disabled --[no-]copy-pic Copy buffers of input picture in the frame. Default enabled Quality reporting metrics: --[no-]ssim Enable reporting SSIM metric scores. Default disabled --[no-]psnr Enable reporting PSNR metric scores. Default disabled Profile, Level, Tier: -P/--profile Enforce an encode profile: main, main10, mainstillpicture --level-idc Force a minimum required decoder level (as '5.0' or '50') --[no-]high-tier If a decoder level is specified, this modifier selects the High tier of that level --uhd-bd Enable UHD Bluray compatibility support --[no-]allow-non-conformance Allow the encoder to generate profile NONE bitstreams. Default disabled Threading, performance: --pools Comma-separated thread count per thread pool (pool per NUMA node) '-' implies no threads on node, '+' implies one thread per core on node -F/--frame-threads Number of concurrently encoded frames. 0: auto-determined by core count --[no-]wpp Enable Wavefront Parallel Processing. Default enabled --[no-]slices Enable Multiple Slices feature. Default 1 --[no-]pmode Parallel mode analysis. Deprecated from release 4.1. Default disabled --[no-]pme Parallel motion estimation. Deprecated from release 4.1. Default disabled --[no-]threaded-me Enables standalone multi-threaded module for motion estimation at CTU level. Default disabled --[no-]asm Override CPU detection. Default: auto Presets: -p/--preset Trade off performance for compression efficiency. Default medium ultrafast, superfast, veryfast, faster, fast, medium, slow, slower, veryslow, or placebo -t/--tune Tune the settings for a particular type of source or situation: psnr, ssim, grain, zerolatency, fastdecode Quad-Tree size and depth: -s/--ctu <64|32|16> Maximum CU size (WxH). Default 64 --min-cu-size <64|32|16|8> Minimum CU size (WxH). Default 8 --max-tu-size <32|16|8|4> Maximum TU size (WxH). Default 32 --tu-intra-depth Max TU recursive depth for intra CUs. Default 1 --tu-inter-depth Max TU recursive depth for inter CUs. Default 1 --limit-tu <0..4> Enable early exit from TU recursion for inter-coded blocks. Default 0 Analysis: --rd <1..6> Level of RDO in mode decision 1:least....6:full RDO. Default 3 --[no-]psy-rd <0..5.0> Strength of psycho-visual rate-distortion optimization, 0 to disable. Default 2.0 --[no-]rdoq-level <0|1|2> Level of RDO in quantization - 0:none. - 1:levels. - 2:levels & coding groups. Default 0 --[no-]psy-rdoq <0..50.0> Strength of psycho-visual optimization in RDO quantization, 0 to disable. Default 0.0 --dynamic-rd <0..4.0> Strength of dynamic RD, 0 to disable. Default 0.00 --[no-]ssim-rd Enable ssim rate-distortion optimization, 0 to disable. Default disabled --[no-]rd-refine Enable QP-based RD refinement for rd levels 5 and 6. Default disabled --[no-]early-skip Enable early SKIP detection. Default enabled --rskip Enable recursion skip for an early exit from CTU analysis during inter-prediction. - 0: disabled. - 1: exit using RD cost & CU homogeneity. - 2: exit using CU edge density. Default 1 --ctu-info Enable receiving ctu information asynchronously and determine the reaction to the CTU information (0, 1, 2, 4, 6) Default 0 - 1: force the partitions if CTU information is present - 2: functionality of (1) and reduce qp if CTU information has changed - 4: functionality of (1) and force Inter modes when CTU Information has changed, merge/skip otherwise Enable this option only when planning to invoke the API function x265_encoder_ctu_info to copy ctu-info asynchronously Coding tools: -w/--[no-]weightp Enable weighted prediction in P slices. Default enabled --[no-]weightb Enable weighted prediction in B slices. Default disabled --[no-]cu-lossless Consider lossless mode in CU RDO decisions. Default disabled --[no-]signhide Hide sign bit of one coeff per TU (rdo). Default enabled Temporal / motion search options: --max-merge <1..5> Maximum number of merge candidates. Default 3 --ref max number of L0 references to be allowed (1 .. 16) Default 3 --limit-refs <0|1|2|3> Limit references per depth (1) or CU (2) or both (3). Default 1 --me Motion search method dia hex umh star full. Default 1 -m/--subme Amount of subpel refinement to perform (0:least .. 7:most). Default 2 --merange Motion search range. Default 57 --[no-]rect Enable rectangular motion partitions Nx2N and 2NxN. Default disabled --[no-]amp Enable asymmetric motion partitions, requires --rect. Default disabled --[no-]limit-modes Limit rectangular and asymmetric motion predictions. Default 0 Spatial / intra options: --[no-]strong-intra-smoothing Enable strong intra smoothing for 32x32 blocks. Default enabled --[no-]constrained-intra Constrained intra prediction (use only intra-coded reference pixels) Default disabled --[no-]b-intra Enable intra in B frames in veryslow presets. Default enabled --[no-]fast-intra Enable faster search method for angular intra predictions. Default disabled --rdpenalty <0..2> penalty for 32x32 intra TU in non-I slices. 0:disabled 1:RD-penalty 2:maximum. Default 0 Slice decision options: --[no-]open-gop Enable open-GOP, allows I slices to be non-IDR. Default enabled --cra-nal Force nal type to CRA to all frames except the first frame, works only with keyint 1. Default disabled -I/--keyint Max IDR period in frames. -1 for infinite-gop. Default 250 -i/--min-keyint Scenecuts closer together than this are coded as I, not IDR. Default: auto --gop-lookahead Extends gop boundary if a scenecut is found within this from keyint boundary. Default 0 --no-scenecut Disable adaptive I-frame decision --scenecut How aggressively to insert extra I-frames. Default 40 --hist-scenecut Enables histogram-based scene-cut detection using a histogram-based algorithm. --no-hist-scenecut Disables histogram-based scene-cut detection using a histogram-based algorithm. --[no-]fades Enable detection and handling of fade-in regions. Default disabled --radl Number of RADL pictures allowed in front of IDR. Default 0 --intra-refresh Use Periodic Intra Refresh instead of IDR frames --rc-lookahead Number of frames for frame-type lookahead (determines encoder latency) Default 20 --lookahead-threads Number of threads to be dedicated to perform lookahead only. Default 0 -b/--bframes <0..16> Maximum number of consecutive b-frames. Default 4 --b-adapt <0..2> 0 - none, 1 - fast, 2 - full (trellis) adaptive B frame scheduling. Default 2 --[no-]b-pyramid Use B-frames as references. Default enabled --[no-]-hrd-concat Set HRD concatenation flag for the first keyframe in the buffering period SEI. Default disabled Rate control, Adaptive Quantization: --bitrate Target bitrate (kbps) for ABR (implied). Default 0 --crf Quality-based VBR (0-51). Default 28.0 --vbv-maxrate Max local bitrate (kbit/s). Default 0 --vbv-bufsize Set size of the VBV buffer (kbit). Default 0 --vbv-init Initial VBV buffer occupancy (fraction of bufsize or in kbits). Default 0.90 --vbv-end Final VBV buffer emptiness (fraction of bufsize or in kbits). Default 0 (disabled) --min-vbv-fullness Minimum VBV fullness percentage to be maintained. Default 50.00 --max-vbv-fullness Maximum VBV fullness percentage to be maintained. Default 80.00 --vbv-end-fr-adj Frame from which qp has to be adjusted to achieve final decode buffer emptiness. Default 0 --chunk-start First frame of the chunk. Default 0 (disabled) --chunk-end Last frame of the chunk. Default 0 (disabled) --pass Multi pass rate control. - 1 : First pass, creates stats file - 2 : Last pass, does not overwrite the stats file - 3 : Nth pass, overwrites the stats file --[no-]multi-pass-opt-analysis Refine analysis in 2 pass based on analysis information from pass 1 --[no-]multi-pass-opt-distortion Use distortion of CTU from pass 1 to refine qp in 2 pass --[no-]vbv-live-multi-pass Enable real-time VBV in rate control 2 pass. Default disabled --stats Filename for stats file in multipass pass rate control. Default x265_2pass.log --[no-]analyze-src-pics Motion estimation uses source frame planes. Default disable --[no-]slow-firstpass Enable a slow first pass in a multipass rate control mode. Default enabled --[no-]strict-cbr Enable stricter conditions and tolerance for bitrate deviations in CBR mode. Default disabled --analysis-save Dump analysis info into the specified file. Default Disabled --analysis-load Load analysis buffers from the file specified. Default Disabled --analysis-reuse-file Specify the file name used for either dumping or reading analysis data. Default x265_analysis.dat --analysis-reuse-level <1..10> Level of analysis reuse indicates the amount of info stored/reused in save/load mode, 1:least..10:most. Now deprecated. Default 0 --analysis-save-reuse-level <1..10> Indicates the amount of analysis info stored in save mode, 1:least..10:most. Default 0 --analysis-load-reuse-level <1..10> Indicates the amount of analysis info reused in load mode, 1:least..10:most. Default 0 --refine-analysis-type Reuse analysis information received through API call. Supported options are AVC and HEVC. Default disabled - 0 --scale-factor Specify the factor by which the input video is scaled down for analysis save mode. Default 0 --refine-intra <0..4> Enable intra-refinement for encode that uses analysis-load. - 0 : Forces both mode and depth from the save encode. - 1 : Functionality of (0) + evaluate all intra modes at min-cu-size's depth when current depth is one smaller than min-cu-size's depth. - 2 : Functionality of (1) + irrespective of size evaluates all angular modes when the save encode decides the best mode as angular. - 3 : Functionality of (1) + irrespective of size evaluates all intra modes. - 4 : Re-evaluate all intra blocks, does not reuse data from save encode. Default:0 --refine-inter <0..3> Enable inter refinement for encode that uses analysis-load. - 0 : Forces both mode and depth from the save encode. - 1 : Functionality of (0) + evaluate all inter modes at min-cu-size's depth when current depth is one smaller than min-cu-size's depth. When save encode decides the current block as skip(for all sizes) evaluate skip/merge. - 2 : Functionality of (1) + irrespective of size restricts the modes evaluated when specific modes are decided as the best mode by the save encode. - 3 : Functionality of (1) + irrespective of size evaluates all inter modes. Default:0 --[no-]dynamic-refine Dynamically changes refine-inter level for each CU. Default disabled --refine-mv <1..3> Enable mv refinement for load mode. Default 1 --refine-ctu-distortion Store/normalize ctu distortion in analysis-save/load. - 0 : Disabled. - 1 : Store/Load ctu distortion to/from the file specified in analysis-save/load. Default 0 - Disabled --aq-mode Mode for Adaptive Quantization - 0:none - 1:uniform AQ - 2:auto variance - 3:auto variance with bias to dark scenes - 4:auto variance with edge information. Default 2 --[no-]hevc-aq Mode for HEVC Adaptive Quantization. Default disabled --aq-strength Reduces blocking and blurring in flat and textured areas (0 to 3.0). Default 1.00 --qp-adaptation-range Delta QP range by QP adaptation based on a psycho-visual model (1.0 to 6.0). Default 1.00 --[no-]aq-motion Block level QP adaptation based on the relative motion between the block and the frame. Default disabled --qg-size Specifies the size of the quantization group (64, 32, 16, 8). Default 32 --[no-]cutree Enable cutree for Adaptive Quantization. Default enabled --[no-]rc-grain Enable rate-control mode to handle grains specifically. Turned on with tune grain. Default disabled --[no-]const-vbv Enable consistent vbv. Turned on with tune grain. Default disabled --zonefile Zone file containing the zone boundaries and the parameters to be reconfigured. --no-zonefile-rc-init This allows the use of rate-control history across zones in zonefile. --max-ausize-factor This value controls the maximum AU size defined in the specification. It represents the percentage of maximum AU size used. Default 1.0 Loop filters (deblock and SAO): --[no-]deblock Enable Deblocking Loop Filter, optionally specify tC: Beta offsets Default enabled --[no-]sao Enable Sample Adaptive Offset. Default enabled --[no-]limit-sao Limit Sample Adaptive Offset types. Default disabled --selective-sao Enable slice-level SAO filter. Default 0 VUI options: --sar Sample Aspect Ratio, the ratio of width to height of an individual pixel. Choose from 0=undef, 1=1:1("square"), 2=12:11, 3=10:11, 4=16:11, 5=40:33, 6=24:11, 7=20:11, 8=32:11, 9=80:33, 10=18:11, 11=15:11, 12=64:33, 13=160:99, 14=4:3, 15=3:2, 16=2:1 or custom ratio of . Default 0 --videoformat Specify video format from unknown, component, pal, ntsc, secam, mac. Default unknown --range Specify black level and range of luma and chroma signals as full or limited Default limited --colorprim Specify color primaries from bt709, unknown, reserved, bt470m, bt470bg, smpte170m, smpte240m, film, bt2020, smpte428, smpte431, smpte432. Default unknown --transfer Specify transfer characteristics from bt709, unknown, reserved, bt470m, bt470bg, smpte170m, smpte240m, linear, log100, log316, iec61966-2-4, bt1361e, iec61966-2-1, bt2020-10, bt2020-12, smpte2084, smpte428, arib-std-b67. Default unknown --master-display SMPTE ST 2086 master display color volume info SEI (HDR) format: G(x,y)B(x,y)R(x,y)WP(x,y)L(max,min) --max-cll Specify content light level info SEI as "cll,fall" (HDR). --video-signal-type-preset Specify combinations of color primaries, transfer characteristics, color matrix, range of luma and chroma signals, and chroma sample location format: [:] This has higher precedence than individual VUI parameters. If any individual VUI option is specified together with this, which changes the values set corresponding to the system-id or color-volume, it will be discarded. The color-volume can be used only with the system-id options BT2100_PQ_YCC, BT2100_PQ_ICTCP, and BT2100_PQ_RGB. system-id options and their corresponding values: BT601_525: --colorprim smpte170m --transfer smpte170m --colormatrix smpte170m --range limited --chromaloc 0 BT601_626: --colorprim bt470bg --transfer smpte170m --colormatrix bt470bg --range limited --chromaloc 0 BT709_YCC: --colorprim bt709 --transfer bt709 --colormatrix bt709 --range limited --chromaloc 0 BT709_RGB: --colorprim bt709 --transfer bt709 --colormatrix gbr --range limited BT2020_YCC_NCL: --colorprim bt2020 --transfer bt2020-10 --colormatrix bt709 --range limited --chromaloc 2 BT2020_RGB: --colorprim bt2020 --transfer smpte2084 --colormatrix bt2020nc --range limited BT2100_PQ_YCC: --colorprim bt2020 --transfer smpte2084 --colormatrix bt2020nc --range limited --chromaloc 2 BT2100_PQ_ICTCP: --colorprim bt2020 --transfer smpte2084 --colormatrix ictcp --range limited --chromaloc 2 BT2100_PQ_RGB: --colorprim bt2020 --transfer smpte2084 --colormatrix gbr --range limited BT2100_HLG_YCC: --colorprim bt2020 --transfer arib-std-b67 --colormatrix bt2020nc --range limited --chromaloc 2 BT2100_HLG_RGB: --colorprim bt2020 --transfer arib-std-b67 --colormatrix gbr --range limited FR709_RGB: --colorprim bt709 --transfer bt709 --colormatrix gbr --range full FR2020_RGB: --colorprim bt2020 --transfer bt2020-10 --colormatrix gbr --range full FRP3D65_YCC: --colorprim smpte432 --transfer bt709 --colormatrix smpte170m --range full --chromaloc 1 color-volume options and their corresponding values: P3D65x1000n0005: --master-display G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,5) P3D65x4000n005: --master-display G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(40000000,50) BT2100x108n0005: --master-display G(8500,39850)B(6550,2300)R(34000,146000)WP(15635,16450)L(10000000,1) --[no-]cll Emit content light level info SEI. Default enabled --[no-]hdr10 Control dumping of HDR10 SEI packet. If max-cll or master-display has non-zero values, this is enabled. Default disabled --[no-]hdr-opt Add luma and chroma offsets for HDR/WCG content. Default disabled. Now deprecated. --[no-]hdr10-opt Block-level QP optimization for HDR10 content. Default disabled. --min-luma Minimum luma plane value of input source picture --max-luma Maximum luma plane value of input source picture Bitstream options: --[no-]repeat-headers Emit SPS and PPS headers at each keyframe. Default disabled --[no-]info Emit SEI identifying encoder and parameters. Default enabled --[no-]hrd Enable HRD parameters signaling. Default disabled --[no-]idr-recovery-sei Emit recovery point infor SEI at each IDR frame --temporal-layers Enable a temporal sublayer for unreferenced B frames. Default disabled --[no-]aud Emit access unit delimiters at the start of each access unit. Default disabled --[no-]eob Emit end of bitstream nal unit at the end of the bitstream. Default disabled --[no-]eos Emit end of sequence nal unit at the end of every coded video sequence. Default disabled --atc-sei Emit the alternative transfer characteristics SEI message where the integer is the preferred transfer characteristic. Default disabled --pic-struct Set the picture structure and emit it in the picture timing SEI message. Values in the range 0..12. See D.3.3 of the HEVC spec. for a detailed explanation. --log2-max-poc-lsb Maximum of the picture order count --[no-]vui-timing-info Emit VUI timing information in the bitstream. Default enabled --[no-]vui-hrd-info Emit VUI HRD information in the bitstream. Default enabled --[no-]opt-qp-pps Dynamically optimize QP in PPS (instead of default 26) based on QPs in previous GOP. Default disabled --[no-]opt-ref-list-length-pps Dynamically set L0 and L1 ref list length in PPS (instead of default 0) based on values in the last GOP. Default disabled --[no-]multi-pass-opt-rps Enable storing commonly used RPS in SPS in multi-pass mode. Default disabled --[no-]opt-cu-delta-qp Optimize to signal consistent CU level delta QPs in the frame. Default disabled --lowpass-dct Use low-pass subband DCT approximation. Default disabled --[no-]frame-dup Enable Frame duplication. Default disabled --dup-threshold PSNR threshold for Frame duplication. Default 70 --[no-]mcstf Enable GOP-based temporal filter. Default 0 ABR-ladder settings --abr-ladder File containing config settings required for the generation of ABR-ladder SEI Message Options --film-grain File containing Film Grain Characteristics to be written as a SEI Message --aom-film-grain File containing Aom Film Grain Characteristics to be written as a SEI Message --[no-]frame-rc Enable configuring Rate Control parameters(QP, CRF or Bitrate) at frame level.Default 0 Enable this option only when planning to invoke the API function x265_encoder_reconfig to configure Rate Control parameters Use --fullhelp for a full listing (or --log-level full --help) Complete documentation may be found at http://x265.readthedocs.org/en/default/cli.html