| Parameter | Description and Possible Values |
|---|---|
| Profile |
Specifies the profile to which the bitstream conforms. Allowed values: AVC_BASELINE, AVC_C_BASELINE, AVC_C_HIGH, AVC_HIGH, AVC_HIGH10, AVC_HIGH10_INTRA, AVC_HIGH_422, AVC_HIGH_422_INTRA, AVC_MAIN, AVC_PROG_HIGH, HEVC_MAIN, HEVC_MAIN10, HEVC_MAIN10_INTRA, HEVC_MAIN_422, HEVC_MAIN_422_10, HEVC_MAIN_422_10_INTRA, HEVC_MAIN_INTRA, HEVC_MAIN_STILL, HEVC_MONO, HEVC_MONO10, XAVC_HIGH10_INTRA_CBG, XAVC_HIGH10_INTRA_VBR, XAVC_HIGH_422_INTRA_CBG, XAVC_HIGH_422_INTRA_VBR, XAVC_LONG_GOP_HIGH_422_MXF, XAVC_LONG_GOP_HIGH_MP4, XAVC_LONG_GOP_HIGH_MXF, XAVC_LONG_GOP_MAIN_MP4. Default value: HEVC_MAIN |
| Level | Specifies the Level to which the bitstream conforms Allowed values: from 1.0 to 5.1 for H.265 (HEVC), from 1.0 to 5.2 for H.264 (AVC) Default value: 5.1 |
| Tier | Specifies the tier to which the bitstream conforms (H.265 (HEVC) only) Allowed values: MAIN_TIER, HIGH_TIER Default value: MAIN_TIER |
| ChromaMode | Selects the Chroma subsampling mode used to encode the stream Allowed values:
Default value: CHROMA_4_2_0 |
| BitDepth | Specifies the bit depth of the Luma and Chroma samples in the encoded
stream. Allowed values: 8 or 10 Default value: 8 |
| NumSlices | Specifies the number of slices used for each frame. Each slice contains one
or more full LCU row(s) and are spread over the frame as regularly
as possible. Allowed values: from 1 up to number of Coding unit rows in the frame. Default value: 1 |
| SliceSize | Target Slice Size specifies the target slice size, in bytes, that the encoder
uses to automatically split the bitstream into approximately
equally-sized slices, with a granularity of one LCU. This impacts
performance, adding an overhead of one LCU per slice to the
processing time of a command. This parameter is not supported in
H.264 (AVC) encoding when using multiple cores. When SliceSize is
zero, slices are defined by the NumSlices parameter. This parameter
is directly sent to the Encoder IP and specifies only the size of
the Slice Data. It does not include any margin for the slice header.
So it is recommended to set the SliceSize parameter with the target
value lowered by 5%. For example if your target value is 1500 bytes
per slice, you should set "SliceSize = 1425" in the configuration
file. Allowed values: 1000-65,535 or 0 to disable the automatic slice splitting. Default value: 0 |
| DependentSlice | When there are several slices per frame (e.g. NumSlices is greater than 1 or
SliceSize is greater than 0), this parameter specifies whether the
additional slice are Dependent slice segments or regular slices
(H.265 (HEVC) only). Allowed values: FALSE, TRUE Default value: FALSE |
| EntropyMode | Selects the entropy coding mode if Profile is set to AVC_MAIN, AVC_HIGH,
AVC_HIGH10 or AVC_HIGH_422 (AVC only) Allowed values:
Default value: MODE_CABAC |
| CabacInit | Specifies the CABAC initialization table index (H.264 (AVC)) / initialization
flag (H.265 (HEVC)). Allowed values: from 0 to 2 (H.264 (AVC)), from 0 to 1 (H.265 (HEVC)) Default value: 0 |
| PicCbQpOffset | Specifies the QP offset for the first Chroma channel (Cb) at picture level.
(H.265 (HEVC) only) Allowed values: from –12 to +12 Default value: 0 |
| PicCrQpOffset | Specifies the QP offset for the second Chroma channel (Cr) at picture level
(H.265 (HEVC) only) Allowed values: from –12 to +12 Default value: 0 |
| SliceCbQpOffset | Specifies the QP offset for the first Chroma channel (Cb) at slice level. Allowed values: from –12 to +12 Default value: 0 |
| SliceCrQpOffset | Specifies the QP offset for the second Chroma channel (Cr) at slice level Allowed values: from –12 to +12 Default value: 0 Note:
|
| ScalingList | Specifies the scaling list mode (H.264 (AVC) and H.265 (HEVC) only). Allowed values: FLAT, DEFAULT |
| QpCtrlMode | Specifies how to generate the QP per CU.
Default value: UNIFORM_QP |
| CuQpDeltaDepth | Specifies the Qp per CU granularity (H.265 (HEVC) only). Used only when
QpCtrlMode is set to AUTO_QP or ADAPTIVE_AUTO_QP
Default value: 0 |
| ConstrainedIntraPred | Specifies the value of constrained_intra_pred_flag syntax element. Allowed values: ENABLE, DISABLE Default value: DISABLE |
| VrtRange_P | Specifies the vertical search range used for P‑frame motion estimation:
Default value: 32 (HEVC) 16 (AVC) |
| LoopFilter | Enables/disables the deblocking filter. Allowed values: ENABLE, DISABLE Default value: ENABLE |
| LoopFilter.CrossSlice | Enables/disables in-loop filtering across the left and upper boundaries of
each slice of the frame. Used only when LoopFilter is set to
ENABLE. Allowed values: ENABLE, DISABLE Default value: ENABLE |
| LoopFilter.CrossTile | Enables/disables in-loop filtering across the left and upper boundaries of
each tile of the frame. (H.265 (HEVC) only) Used only when
LoopFilter is set to ENABLE. Allowed values: ENABLE, DISABLE Default value: ENABLE |
| LoopFilter.BetaOffset | Specifies the beta offset for the deblocking filter. Used only when
LoopFilter is set to ENABLE. Allowed values: from –6 to +6 Default value: –1 |
| LoopFilter.TcOffset | Specifies the Alpha_c0 offset (H.264 (AVC)) or Tc offset (H.265 (HEVC)) for
the deblocking filter. Used only when Loop Filter is set to
ENABLE. Allowed values: from –6 to +6 Default value: –1 |
| CacheLevel2 | Enables/disables the optional Encoder buffer. This can be used to reduce the
memory bandwidth and it can slightly reduce the video quality. If enabling this parameter displays an error message from the encoder, it means that the encoder buffer size provided by the VCU driver is too small to handle the minimum motion estimation range. Allowed values: ENABLE, DISABLE Default value: DISABLE |
| AspectRatio | Selects the display aspect ratio of the video sequence to be written in
SPS/VUI. Allowed values:
Default value: ASPECT_RATIO_AUTO |
| LookAhead | LookAhead is the size of the LookAhead (number of frames between the two passes):
Default value: 0 |
| VideoMode | Specifies Video mode. Available values: INTERLACED_BOTTOM, INTERLACED_TOP, PROGRESSIVE Default value: PROGRESSIVE |
| EnableSEI 3 | Determines which supplemental enhancement information are sent with the
stream. Available values: SEI_ALL, SEI_BP, SEI_CLL, SEI_MDCV, SEI_NONE, SEI_PT, SEI_RP. Default value: SEI_NONE |
| LambdaCtrlMode | Specifies the lambda values used for rate-distortion optimization. Available values: AUTO_LDA, DEFAULT_LDA, DYNAMIC_LDA, LOAD_LDA. Default value: AUTO_LDA |
| LambdaFactors | Specifies the lambda factor for each picture: I, P and B by increasing
temporal ID Default value: 0 0 0 0 0 0 |
| EnableFillerData | Specifies if filler data can be added to stream or not Available values: DISABLE, ENABLE, ENC (same as ENABLE but for backward compatibility only) and APP (Encoded stream contains uninitialized filler data that should be filled by the application layer) Default value: ENABLE |
| AvcLowLat | Enables a special synchronization mode for AVC low latency encoding
(validation only). Available values: DISABLE, ENABLE. Default value: DISABLE |
| ColourDescription | Available values: COLOUR_DESC_BT_2020, COLOUR_DESC_BT_470_NTSC,
COLOUR_DESC_BT_601_NTSC, COLOUR_DESC_BT_601_PAL, COLOUR_DESC_BT_709,
COLOUR_DESC_EBU_3213, COLOUR_DESC_GENERIC_FILM,
COLOUR_DESC_RESERVED, COLOUR_DESC_SMPTE_240M,
COLOUR_DESC_SMPTE_EG_432, COLOUR_DESC_SMPTE_RP_431,
COLOUR_DESC_SMPTE_ST_428, COLOUR_DESC_UNSPECIFIED. Default value: "COLOUR_DESC_BT_709" |
| ColourMatrix | Specifies the matrix coefficients used in deriving luma and chroma signals
from RGB (HDR setting). Available values: COLOUR_MAT_BT_2100_YCBCR, COLOUR_MAT_UNSPECIFIED. Default value: COLOUR_MAT_UNSPECIFIED |
| CostMode | Available values: DISABLE, ENABLE. Default value: ENABLE |
| EnableAUD | Determines if Access Unit Delimiter are added to the stream or not. Available values: DISABLE, ENABLE. Default value: ENABLE |
| FileScalingList | If ScalingList is CUSTOM, specifies the file containing the quantization matrices |
| NumCore | Number of cores to use for this encoding. Default value: AUTO |
| SCDFirstPass | During first pass, to encode faster, enable only the scene change
detection. Available values: DISABLE, ENABLE. Default value: DISABLE |
| SliceLat | Enables slice latency mode. Available values: DISABLE, ENABLE. Default value: DISABLE |
| SrcFormat | Available values: COMP_32x4, COMP_64x4, NVX, TILE_32x4, TILE_64x4. Default value: NVX |
| SubframeLatency | Enables the subframe latency mode. Available values: DISABLE, ENABLE. Default value: DISABLE |
| TransferCharac | Specifies the reference opto-electronic transfer characteristic function
(HDR setting). Available values: TRANSFER_BT_2100_PQ, TRANSFER_UNSPECIFIED. Default value: TRANSFER_UNSPECIFIED |
| TwoPass | Index of the pass currently encoded in the Twopass mode. Default value: DISABLE |
| WaveFront | Available values: DISABLE, ENABLE. Default value: DISABLE |
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