ffmpeg -h encoder=hevc_amf

Encoder hevc_amf [AMD AMF HEVC encoder]:
    General capabilities: dr1 delay hardware 
    Threading capabilities: none
    Supported hardware devices: d3d11va d3d11va dxva2 dxva2 
    Supported pixel formats: nv12 yuv420p d3d11 dxva2_vld
hevc_amf AVOptions:
  -usage             <int>        E..V....... Set the encoding usage (from 0 to 3) (default transcoding)
     transcoding     0            E..V....... 
     ultralowlatency 1            E..V....... 
     lowlatency      2            E..V....... 
     webcam          3            E..V....... 
  -profile           <int>        E..V....... Set the profile (default main) (from 1 to 1) (default main)
     main            1            E..V....... 
  -profile_tier      <int>        E..V....... Set the profile tier (default main) (from 0 to 1) (default main)
     main            0            E..V....... 
     high            1            E..V....... 
  -level             <int>        E..V....... Set the encoding level (default auto) (from 0 to 186) (default auto)
     auto            0            E..V....... 
     1.0             30           E..V....... 
     2.0             60           E..V....... 
     2.1             63           E..V....... 
     3.0             90           E..V....... 
     3.1             93           E..V....... 
     4.0             120          E..V....... 
     4.1             123          E..V....... 
     5.0             150          E..V....... 
     5.1             153          E..V....... 
     5.2             156          E..V....... 
     6.0             180          E..V....... 
     6.1             183          E..V....... 
     6.2             186          E..V....... 
  -quality           <int>        E..V....... Set the encoding quality (from 0 to 10) (default speed)
     balanced        5            E..V....... 
     speed           10           E..V....... 
     quality         0            E..V....... 
  -rc                <int>        E..V....... Set the rate control mode (from -1 to 3) (default -1)
     cqp             0            E..V....... Constant Quantization Parameter
     cbr             3            E..V....... Constant Bitrate
     vbr_peak        2            E..V....... Peak Contrained Variable Bitrate
     vbr_latency     1            E..V....... Latency Constrained Variable Bitrate
  -header_insertion_mode <int>        E..V....... Set header insertion mode (from 0 to 2) (default none)
     none            0            E..V....... 
     gop             1            E..V....... 
     idr             2            E..V....... 
  -gops_per_idr      <int>        E..V....... GOPs per IDR 0-no IDR will be inserted (from 0 to INT_MAX) (default 1)
  -preanalysis       <boolean>    E..V....... Enable preanalysis (default false)
  -vbaq              <boolean>    E..V....... Enable VBAQ (default false)
  -enforce_hrd       <boolean>    E..V....... Enforce HRD (default false)
  -filler_data       <boolean>    E..V....... Filler Data Enable (default false)
  -max_au_size       <int>        E..V....... Maximum Access Unit Size for rate control (in bits) (from 0 to INT_MAX) (default 0)
  -min_qp_i          <int>        E..V....... min quantization parameter for I-frame (from -1 to 51) (default -1)
  -max_qp_i          <int>        E..V....... max quantization parameter for I-frame (from -1 to 51) (default -1)
  -min_qp_p          <int>        E..V....... min quantization parameter for P-frame (from -1 to 51) (default -1)
  -max_qp_p          <int>        E..V....... max quantization parameter for P-frame (from -1 to 51) (default -1)
  -qp_p              <int>        E..V....... quantization parameter for P-frame (from -1 to 51) (default -1)
  -qp_i              <int>        E..V....... quantization parameter for I-frame (from -1 to 51) (default -1)
  -skip_frame        <boolean>    E..V....... Rate Control Based Frame Skip (default false)
  -me_half_pel       <boolean>    E..V....... Enable ME Half Pixel (default true)
  -me_quarter_pel    <boolean>    E..V....... Enable ME Quarter Pixel  (default true)
  -aud               <boolean>    E..V....... Inserts AU Delimiter NAL unit (default false)
  -log_to_dbg        <boolean>    E..V....... Enable AMF logging to debug output (default false)