Video Encoders

Type	Compressor
`appr`	Apple ProRes
`h264`	Advanced Video Coding
`anim`	Apple RLE (Animation)
`avdn`	Avid DNxHD
`cano`	Grass Valley Canopus HQX
`cfhd`	GoPro CineForm HD
`mcdv`	DV
`ffv1`	FFmpeg FFv1
`vpx`	Google VP8/VP9
`h265`	High Efficiency Video Coding
`cj2k`	JPEG-2000
`mcm2`	MPEG-2
`sav1`	SVT-AV1
`wmv`	Windows Media Video 9
`n264`	XAVC

Apple ProRes

The appr compressor encodes Apple ProRes 422 and ProRes 4444.

Property	Type	Description
`OutputFormat`	string	Four character code that specifies the output video stream format: `apcn` ProRes 422 `apch` ProRes 422 HQ `apcs` ProRes 422 LT `apco` ProRes 422 Proxy `ap4h` ProRes 4444 HQ `ap4x` ProRes 4444 XQ
`PreserveAlpha`	boolean	Indicates whether the alpha channel should be preserved if supported by the output format.

AVC

The h264 compressor encodes generic AVC.

Property	Type	Description
`OutputFormat`	string	Four character code that specifies the output video stream format: `avc1` `h264` Annex B
`BitRate`	integer	Average bit rate in bits/second.
`Profile`	enum	Specifies the encoding profile: `baseline` `main` `high` `high10` `high422` `high444`
`Level`	integer	Specifies the decoder level. The value represents the Annex A level multiplied by 10. For example the value 41 represents level "4.1". The default value of -1 instructs the encoder to auto detect the level.
`Preset`	enum	Specifies an encoding preset: `ultrafast` `superfast` `veryfast` `faster` `fast` `medium` Default `slow` `slower` `veryslow`
`Tuning`	enum	Tunes the encoder based on the input content: `film` `animation` `grain` `stillimage` `psnr` `ssim` `fastdecode` `zerolatency`
`CommandLine`	string	Specifies the encoder options as an x264 command line.

Frame Type

Property	Type	Description
`MinKeyFrameInterval`	integer	Specifies the minimum interval between IDR frames.
`MaxKeyFrameInterval`	integer	Specifies the maximum interval between IDR frames.
`FixedIdrFrameInterval`	integer	Specifies a fixed interval between IDR frames.
`SceneCutThreshold`	integer	Specifies the threshold for IDR frame placement. Higher values produce more frequent IDR frames. `0` Disabled `40` Default
`OpenGop`	boolean	Enables or disables open GOP encoding.
`MaxBFrames`	integer	Specifies the maximum number off consecutive B frames.
`AdaptiveBFrameScheduling`	integer	Specifies the B frame placement algorithm: `0` Disables `1` Fast `2` Optimal
`BPyramid`	integer	Allows the use of B frames as references for other frames: `0` No B references `1` One B frame reference `2` Multiple B references
`MaxReferenceFrames`	integer	Specifies the maximum number of previous frames referenced by a P frame. The range 0 - 16 where the default is 3:
`MaxSlices`	integer	Specifies the number of rectangular slices per frame. Default is 0.

Rate Control

Property	Type	Description
`RateControlMethod`	integer	Specifies the rate control method: `0` Constant quantizer `1` Constant rate factor `2` Average bitrate
`Lookahead`	integer	Specifies the number of look ahead frames used for rate control. Default is 40.
`Quantizer`	integer	Specifies the constant quantizer in the range 0 (lossless) to 51 (8 bit) or 63 (10 bit). The default is 10.
`IPRatio`	number	Specifies the quantizer ratio of I frames relative to P frames. Default is 1.4.
`PBRatio`	number	Specifies the quantizer ratio of B frames relative to P frames. Default is 1.3.
`RateFactor`	integer	Specifies the constant rate factor. Default is 23.
`QpMin`	integer	Specifies the minimum allowable quantizer. Default is 0.
`QpMax`	integer	Specifies the maximum allowable quantizer. Default is 51 (8 bit).
`QpStep`	integer	Specifies the maximum change in the quantizer between frames. Default is 4.
`AdaptiveQuantizationStrength`	number	Specifies the adaptive quantizer bias towards low detail macro blocks. Default is 1.0.
`BitRate`	integer	Specifies the average (or constant) bit rate in bits/second.
`VBVMaxRate`	integer	Specifies the maximum fill rate for the VBV buffer in bits/seconds.
`VBVBufferSize`	integer	Specifies the size of the VBV buffer in bits.
`VBVInitialFill`	integer

Analysis

Property	Type	Description
`WeightedPPrediction`	integer	Enables the use of weighted prediction to improve compression in P-frames: `0` Disabled `1` Blind offset `2` Smart analysis

Video Usability

Property	Type	Description
`VideoFormat`	integer	Indicates the source content type: `0` Component `1` PAL `2` NTSC `3` SECAM `4` MAC `5` Unspecified

Bitstream

Property	Type	Description
`RemoveOptionsSei`	boolean	Removes the SEI message containing the x265 command line options.
`RepeatHeaders`	boolean	Repeats the VPS, SPS and PPS NAL units in each I frame.
`EnableAccessUnitDelimiters`	boolean	Emits an AUD NAL unit for each access unit.
`NalHrdMode`	integer	Indicates whether to signal HRD information: `0` None `1` VBR `2` CBR
`ForcePicStruct`	boolean	Forces the insertion of pic_struct in SEI Picture Timing messages.

Multi-pass Statistics

Property	Type	Description
`StatFileIn`	string	Specifies the name of the input statistics file.
`StaFileOut`	string	Specifies the name of the output statistics file.
`StatRead`	boolean	Enables reading the statistics file from a previous encode pass.
`StatWrite`	boolean	Enables writing the statistics file during the current encode pass.

Avid DNxHD

The adnh compressor encodes Avid DNxHD and DNxHR (resolution independant).

Property	Type	Description
`OutputFormat`	string	Four character code that specifies the encoded video stream format: `AVdn` Avid DNxHD `AVdh` Avid DNxHR
CompressionId	int	Avid compression identifier.
PreserveAlpha	boolean	Indicates whether the alpha channel should be preserved if supported by the output format.

Compression Identifiers

The encoder supports the following Avid compression identifiers:

Format	CompressionId	Description
`AVdn`	1235	HQX 1080p (10 bit)
`AVdn`	1237	SQ 1080p
`AVdn`	1238	HQ 1080p
`AVdn`	1241	HQ 1080i
`AVdn`	1242	SQ 1080i
`AVdn`	1243	HQ 1080i
`AVdn`	1244	HQ 1440x1080i
`AVdn`	1250	HQX 720p (10 bit)
`AVdn`	1251	HQ 720p
`AVdn`	1252	SQ 720p
`AVdn`	1252	LB 1080p
`AVdn`	1256	444 1080p (10 bit)
`AVdn`	1258	SQ 960x720p
`AVdn`	1259	SQ 1440x1080p
`AVdn`	1260	SQ 1440x1080i
`AVdh`	1270	444 (12 bit)
`AVdh`	1271	HQX (12 bit)
`AVdh`	1272	HQ
`AVdh`	1273	SQ
`AVdh`	1274	LB

Canopus HQX

The cano compressor encoded Canopus HQ (8 bit) and HQX (10 bit).

Property	Type	Description
`OutputFormat`	string	Four character code that specifies the encoded video stream format: `CUVC` Canopus HQ `CHQX` Canopus HQX
`QuantizationScale`	integer	Specifies the quantization factor in the range of 4 to 19 for HQ and 0 to 18 for HQX. A smaller value results in higher image quality.
`CompressionRatio`	integer	Specifies the maximum compressed bit rate as a percentage (4 - 100) of the uncompressed rate. For example: `4` 25:1 `10` 10:1 `20` 5:1 `100` 1:1
PreserveAlpha	boolean	Indicates whether the alpha channel should be preserved if supported by the output format.

DV

The mcdv compressor encodes DV, DVCPro and DVCProHD.

Property	Type	Description
`OutputFormat`	string	Four character code that specifies the encoded video stream format: `dvc` DVC 25 `dvp` DVCPro 25 `dv5` DVCPro 50 `dv1` DVCPro 100 `dvh` DVCPro HD See Video Format Codes for a complete list.

Google VP8/VP9

The vpx compressor encodes VP8 and VP9.

Property	Type	Description
`OutputFormat`	string	Four character code that specifies the encoded video stream format: `VP80` `VP90`
`BitRate`	integer	Target bit rate in kilobits pr second.
`Profile`	integer	Bitstream profile (VP9): `0` 8 bit 4:2:0 `1` 8 bit 4:4:4, 4:2:2, 4:4:0 `2` 10/12 bit 4:2:0 `3` 10/12 bit 4:4:4, 4:2:2, 4:4:0
`ColorRange`	integer	Video range: `0` Narrow (16 - 235) `1` Full (0 - 255)
`Tuning`	integer	Tunes the encoder based on a specific characteristic: `0` PSNR `1` SSIM
`TuneContent`	integer	Tunes the encoder based on the content type: `0` Default `1` Video `2` Screen

Frame Type

Property	Type	Description
`MinGopLength`	integer	Minimum keyframe interval. Set to `MaxGopLength` for a fixed keyframe interval.
`MaxGopLength`	integer	Maximum keyframe interval.
`MinGfInterval`	integer	Minimum interval between GF and ARF frames (default 4).
`MaxGfInterval`	integer	Maximum interval between GF and ARF frames (default 16).
`EncoderDelay`	integer	Maximum number of frame used for forward prediction.

Rate Control

Property	Type	Description
`RateControlMode`	integer	Specifies the rate control method: `0` Variable bit rate (VBR) `1` Constant bit rate (CBR) `2` Constrained quality (CQ) `3` Constant quality (Q)
`ConstrainedQualityLevel`	integer	Specifies the constrained quality level (0 to 63).
`AdaptiveQuantizationMode`	integer	Specifies the adaptive quantization mode: `0` None `1` Variance `2` Complexity `3` Cyclic refresh
`MinQp`	integer	Minimum (highest quality) quanitizer (0 - 63).
`MaxQp`	integer	Maximum (lowest quality) quantizer (0 - 63).
`InitiualBufferSIze`	integer	Specifies the amount of data to buffer before playback begins in milliseconds.
`BufferSize`	integer	Specifies the maximum buffer size in milliseconds.

Threading

Property	Type	Description
`Threads`	integer	Maximum number of encoding threads (default 1).
`TokenPartitions`	integer	Number of entropy encoder data partitions in `log2(n)` units: `0` 1 partition `1` 2 partitions `2` 4 partitions `3` 8 partitions
`TileColumns`	integer	Specifies the number of image tile columns in `log2(n)` units (VP9). Tiles are encoded on separate threads. Default value is 0 (single column).
`TileRows`	integer	Specifies the number of image tile rows in `log2(n) units (VP9). Tiles are encoded on separate threads. Default value is 0 (single row).
`ParallelDecoding`	boolean	Enables or disables frame parallel decoding (VP9).

HEVC

The h265 compressor encodes generic HEVC.

Property	Type	Description
`OutputFormat`	string	Four character code that specifies the output video stream format: `hvc1` `h265` Annex B
`BitRate`	integer	Average bit rate in bits/second.
`Profile`	integer	Specifies the encoding profile: `0` Main `1` Main 10 bit `4` Main Intra `5` Main 10 bit Intra `6` Main 4:4:4 `7` Main 4:4:4 Intra `9` Main 4:2:2 10 bit `10` Main 4:2:2 10 bit Intra `11` Main 4:4:4 10 bit `12` Main 4:4:4 10 bit Intra `13` Main 12 bit `14` Main 12 bit Intra `15` Main 4:2:2 12 bit `16` Main 4:2:2 12 bit Intra `17` Main 4:4:4 12 bit `18` Main 4:4:4 12 bit Intra `19` Main 4:4:4 16 bit Intra
`Level`	integer	Specifies the decoder level. The value represents the level multiplied by 10 for example a value of 51 represents level "5.1". The default value 0 instructs the encoder to auto detect the level.
`Preset`	integer	Specifies an encoding preset: `0` Ultrafast `1` Superfast `2` Veryfast `3` Faster `4` Fast `5` Medium (default) `6` Slow `7` Slower `8` Veryslow
`Tuning`	integer	Tunes the encoder based on a specific characteristic: `0` PSNR `1` SSIM `2` Grain `3` Zero Latency `4` Fast Decode
`CommandLine`	string	Specifies the encoder options as an x265 command line.

Frame Type

Property	Type	Description
`MinKeyFrameInterval`	integer	Specifies the minimum interval between IDR frames.
`MaxKeyFrameInterval`	integer	Specifies the maximum interval between IDR frames.
`FixedIdrFrameInterval`	integer	Specifies a fixed interval between IDR frames.
`SceneCutThreshold`	integer	Specifies the threshold for IDR frame placement. Higher values produce more frequent IDR frames. `0` Disabled `40` Default
`OpenGop`	boolean	Enables or disables open GOP encoding.
`MaxBFrames`	integer	Specifies the maximum number off consecutive B frames.
`AdaptiveBFrameScheduling`	integer	Specifies the B frame placement algorithm: `0` Disables `1` Fast `2` Optimal
`BPyramid`	integer	Allows the use of B frames as references for other frames: `0` No B references `1` One B frame reference `2` Multiple B references
`MaxReferenceFrames`	integer	Specifies the maximum number of previous frames referenced by a P frame. The range 0 - 16 where the default is 3:
`MaxSlices`	integer	Specifies the number of rectangular slices per frame. Default is 0.

Rate Control

Property	Type	Description
`RateControlMethod`	integer	Specifies the rate control method: `0` Average bitrate (ABR) `1` Constant quantizer (CQP) `2` Constant rate factor (CRF) `3` Constant bit rate (CBR)
`Lookahead`	integer	Specifies the number of look ahead frames used for rate control. Default is 40.
`Quantizer`	integer	Specifies the constant quantizer in the range 0 (lossless) to 51 (8 bit) or 63 (10 bit). The default is 10.
`IPRatio`	number	Specifies the quantizer ratio of I frames relative to P frames. Default is 1.4.
`PBRatio`	number	Specifies the quantizer ratio of B frames relative to P frames. Default is 1.3.
`RateFactor`	integer	Specifies the constant rate factor. Default is 23.
`AdaptiveQuantizationStrength`	number	Specifies the adaptive quantizer bias towards low detail macro blocks. Default is 1.0.
`BitRate`	integer	Specifies the average (or constant) bit rate in bits/second.
`EnableStrictCBR`	boolean	Enables stricter conditions to control deviance from the target bitrate.
`VBVMaxRate`	integer	Specifies the maximum fill rate for the VBV buffer in bits/seconds.
`VBVBufferSize`	integer	Specifies the size of the VBV buffer in bits.
`VBVInitialFill`	integer	Specifies the initial VBV buffer fill in bits.

Bitstream

Property	Type	Description
`RemoveOptionsSei`	boolean	Removes the SEI message containing the x265 command line options.
`RepeatHeaders`	boolean	Repeats the VPS, SPS and PPS NAL units in each I frame.
`EnableAccessUnitDelimiters`	boolean	Emits an AUD NAL unit for each access unit.
`HRDCompliance`	boolean	Emits Buffering Period and Picture Timing SEI messages.
`EmitHDRSEI`	boolean	Emits default mastering display and content light level HDR SEI messages.
`MaxCLL`	integer	Specifies the HDR10 maximum content light level in candelas per square meter.
`MaxFALL`	integer	Specifies the HDR10 maximum frame average light level in candelas per square meter.
`MasteringDisplayColorVolume`	string	Specifies the ST2086 display information.

Multi-pass Statistics

Property	Type	Description
`StatFile`	string	Specifies the file name for the multiple pass statistics file.
`StatRead`	boolean	Enables reading the statistics file from a previous encode pass.
`StatWrite`	boolean	Enables writing the statistics file during the current encode pass.
`EnableSlowFirstPass`	boolean	Enables a more detailed first pass encode.

JPEG-2000

The cj2k compressor encodes IMF and DCP compliant JPEG-2000.

Property	Type	Description
BitRate	integer	Specifies the maximum encode bit rate.
BitDepth	integer	Specifies the bit depth of each color component.
Profile	integer	Specifies the encoding profile.

Encoding Profiles

The cj2k compressor supports the following encoding profiles:

Profile	Description
0	No constraints are applied.
1	Broadcast, lossy, single tile.
2	Broadcast, lossy, multi-tile grid.
3	Broadcast, lossy, multi-tile stripes.
4	Broadcast, lossless, single tile.
5	Broadcast, lossless, multi-tile grid.
6	Broadcast, lossless, multi-tile stripes.
100	DCI 2K
101	DCI 4K
200	IMF 2K, lossy, single tile
201	IMF 4K, lossy, single tile
202	IMF 8K, lossy, single tile
203	IMF 2K, lossless, single tile
204	IMF 2K, lossy, 1024 tile size
205	IMF 4K, lossless, single tile
206	IMF 4K, lossless, 1024 tile size
207	IMF 4K, lossless, 2048 tile size
208	IMF 8K, lossless, single tile
209	IMF 8K, lossless, 1024 tile size
210	IMF 8K, lossless, 2048 tile size
211	IMF 8K, lossless, 4096 tile size

MPEG-2

The mcm2 compressor encodes generic (unconstrained) MPEG-1, MPEG-2 and constrained formats such as HDV, IMX and XDCAM.

Property	Type	Description
OutputFormat	string	Four character code that specifies the output video stream format: `hd` HDV `mp1v` MPEG-1 `mp2v` MPEG-2 `mx` IMX Class 30, 40, 50 `xd*` XDCAM EX, HD, HD422 See Video Format Codes for a complete list.
`BitRate`	integer	Average bit rate in bits/second.
`Profile`	integer	Specifies the encoding profile: `5` Simple `4` Main `1` High `7` 4:2:2
`Level`	integer	Specifies the endowing level: `10` Low `8` Main `6` High 1440 (this raster) `4` High
`Chroma`	integer	Specifies the chroma subsampling: `0` 4:2:0 `1` 4:2:2
`N`	integer	Number of frames in the GOP (distance between successive I frames).
`M`	integer	Distance between I and P frames. For example M=3 produces 2 B frames.
`ClosedGop`	boolean	Indicates that each GOP should be closed (no reference to frames in a previous GOP).
`StartWithIFrame`	boolean	Indicates that the first frame (in coded order) must be and I frame.

XAVC

The n264 compressor encodes constrained AVC based camera, post-production and broadcast formats such as AVC-Intra, Panasonic AVC Ultra and Sony XAVC.

Property	Type	Description
`OutputFormat`	string	Four character code that specifies the output video stream format: `h264` Generic H.264 `ai*` AVC Intra Class 50, 100, 200 `avix` AVC Intra VBR See Video Format Codes for a complete list.
`Constraint`	integer	Specifies a standard or manufacturer defined encoding constraint. See the constraints list below.
`ConcurrentFrameCount`	integer	Specifies the number of frames to encode simultaneously for intra-only constraints (default is 1).

Constrained Formats

The encoder supports the following constrained AVC formats:

Constraint	Description
`0`	Unconstrained
`1`	AVC Intra Class 50
`2`	AVC Intra Class 100
`3`	AVC Intra Class 200
`10`	Panasonic AVC Intra 4K 4:2:2
`11`	Panasonic AVC Intra 2K 4:2:2
`12`	Panasonic AVC Intra HD 4:2:2
`20`	Panasonic AVC-LongGOP 4:2:2 Class G50 (50 Mbps)
`21`	Panasonic AVC-LongGOP 4:2:2 Class G25 (25 Mbps)
`22`	Panasonic AVC-LongGOP 4:2:0 Class G12 (12 Mbps)
`23`	Panasonic AVC-LongGOP 4:2:0 Class G6 (6 Mbps)
`40`	RP2027 AVC Intra Class 50
`41`	RP2027 AVC Intra Class 100
`42`	RP2027 AVC Intra Class 200
`50`	Sony XAVC Long GOP HD 4:2:2 10-bit Profile (25 Mbps) XD Style
`51`	Sony XAVC Long GOP HD 4:2:2 10-bit Profile (35 Mbps) XD Style
`52`	Sony XAVC Long GOP HD 4:2:2 10-bit Profile (50 Mbps) XD Style
`60`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (40 Mbps) M4 Style
`61`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (80 Mbps) M4 Style
`62`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (126 Mbps) M4 Style
`63`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (156 Mbps) M4 Style
`64`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (188 Mbps) M4 Style
`70`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (188 Mbps) XD Style
`71`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (300 Mbps) XD Style
`80`	Sony XAVC Long GOP HD 4:2:2 10-bit Profile (100 Mbps) XD Style
`81`	Sony XAVC Long GOP HD 4:2:2 10-bit Profile (140 Mbps) XD Style
`82`	Sony XAVC Long GOP HD 4:2:2 10-bit Profile (200 Mbps) XD Style
`90`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (188 Mbps) M4 Style
`91`	Sony XAVC Long GOP HD 4:2:0 8-bit Profile (300 Mbps) M4 Style
`110`	Sony XAVC HD Intra CBG Profile Class 50 XD Style
`111`	Sony XAVC HD Intra CBG Profile Class 100 XD Style
`112`	Sony XAVC HD Intra CBG Profile Class 200 XD Style
`113`	Sony XAVC HD Intra VBR Profile Class 100 M4 Style
`114`	Sony XAVC 4K Intra CBG Class 100 XD Style
`115`	Sony XAVC 4K Intra CBG Class 300 XD Style
`116`	Sony XAVC 4K Intra CBG Class 480 XD Style
`117`	Sony XAVC 4K Intra VBR Class 100 XD Style
`118`	Sony XAVC 4K Intra VBR Class 300 XD Style
`119`	Sony XAVC 4K Intra VBR Class 480 XD Style