Hu Chunming / vpt_ascend_arm

  @c DO NOT EDIT THIS FILE!
  @c It was generated by print_options.
  
  @section Codec AVOptions
  @table @option
  @item -b[:stream_specifier] @var{integer} (@emph{output,audio,video})
  set bitrate (in bits/s)
  @item -ab[:stream_specifier] @var{integer} (@emph{output,audio})
  set bitrate (in bits/s)
  @item -bt[:stream_specifier] @var{integer} (@emph{output,video})
  Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far ratecontrol is willing to deviate from the target average bitrate value. This is not related to minimum/maximum bitrate. Lowering tolerance too much has an adverse effect on quality.
  @item -flags[:stream_specifier] @var{flags} (@emph{input/output,audio,video,subtitles})
  
  Possible values:
  @table @samp
  @item unaligned
  allow decoders to produce unaligned output
  @item mv4
  use four motion vectors per macroblock (MPEG-4)
  @item qpel
  use 1/4-pel motion compensation
  @item loop
  use loop filter
  @item qscale
  use fixed qscale
  @item pass1
  use internal 2-pass ratecontrol in first  pass mode
  @item pass2
  use internal 2-pass ratecontrol in second pass mode
  @item gray
  only decode/encode grayscale
  @item psnr
  error[?] variables will be set during encoding
  @item truncated
  Input bitstream might be randomly truncated
  @item ildct
  use interlaced DCT
  @item low_delay
  force low delay
  @item global_header
  place global headers in extradata instead of every keyframe
  @item bitexact
  use only bitexact functions (except (I)DCT)
  @item aic
  H.263 advanced intra coding / MPEG-4 AC prediction
  @item ilme
  interlaced motion estimation
  @item cgop
  closed GOP
  @item output_corrupt
  Output even potentially corrupted frames
  @item drop_changed
  Drop frames whose parameters differ from first decoded frame
  @end table
  @item -flags2[:stream_specifier] @var{flags} (@emph{input/output,audio,video,subtitles})
  
  Possible values:
  @table @samp
  @item fast
  allow non-spec-compliant speedup tricks
  @item noout
  skip bitstream encoding
  @item ignorecrop
  ignore cropping information from sps
  @item local_header
  place global headers at every keyframe instead of in extradata
  @item chunks
  Frame data might be split into multiple chunks
  @item showall
  Show all frames before the first keyframe
  @item export_mvs
  export motion vectors through frame side data
  @item skip_manual
  do not skip samples and export skip information as frame side data
  @item ass_ro_flush_noop
  do not reset ASS ReadOrder field on flush
  @end table
  @item -export_side_data[:stream_specifier] @var{flags} (@emph{input/output,audio,video,subtitles})
  Export metadata as side data
  
  Possible values:
  @table @samp
  @item mvs
  export motion vectors through frame side data
  @item prft
  export Producer Reference Time through packet side data
  @item venc_params
  export video encoding parameters through frame side data
  @item film_grain
  export film grain parameters through frame side data
  @end table
  @item -g[:stream_specifier] @var{integer} (@emph{output,video})
  set the group of picture (GOP) size
  @item -ar[:stream_specifier] @var{integer} (@emph{input/output,audio})
  set audio sampling rate (in Hz)
  @item -ac[:stream_specifier] @var{integer} (@emph{input/output,audio})
  set number of audio channels
  @item -cutoff[:stream_specifier] @var{integer} (@emph{output,audio})
  set cutoff bandwidth
  @item -frame_size[:stream_specifier] @var{integer} (@emph{output,audio})
  @item -qcomp[:stream_specifier] @var{float} (@emph{output,video})
  video quantizer scale compression (VBR). Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0
  @item -qblur[:stream_specifier] @var{float} (@emph{output,video})
  video quantizer scale blur (VBR)
  @item -qmin[:stream_specifier] @var{integer} (@emph{output,video})
  minimum video quantizer scale (VBR)
  @item -qmax[:stream_specifier] @var{integer} (@emph{output,video})
  maximum video quantizer scale (VBR)
  @item -qdiff[:stream_specifier] @var{integer} (@emph{output,video})
  maximum difference between the quantizer scales (VBR)
  @item -bf[:stream_specifier] @var{integer} (@emph{output,video})
  set maximum number of B-frames between non-B-frames
  @item -b_qfactor[:stream_specifier] @var{float} (@emph{output,video})
  QP factor between P- and B-frames
  @item -b_strategy[:stream_specifier] @var{integer} (@emph{output,video})
  strategy to choose between I/P/B-frames
  @item -ps[:stream_specifier] @var{integer} (@emph{output,video})
  RTP payload size in bytes
  @item -bug[:stream_specifier] @var{flags} (@emph{input,video})
  work around not autodetected encoder bugs
  
  Possible values:
  @table @samp
  @item autodetect
  
  @item xvid_ilace
  Xvid interlacing bug (autodetected if FOURCC == XVIX)
  @item ump4
  (autodetected if FOURCC == UMP4)
  @item no_padding
  padding bug (autodetected)
  @item amv
  
  @item qpel_chroma
  
  @item std_qpel
  old standard qpel (autodetected per FOURCC/version)
  @item qpel_chroma2
  
  @item direct_blocksize
  direct-qpel-blocksize bug (autodetected per FOURCC/version)
  @item edge
  edge padding bug (autodetected per FOURCC/version)
  @item hpel_chroma
  
  @item dc_clip
  
  @item ms
  work around various bugs in Microsoft's broken decoders
  @item trunc
  truncated frames
  @item iedge
  
  @end table
  @item -strict[:stream_specifier] @var{integer} (@emph{input/output,audio,video})
  how strictly to follow the standards
  
  Possible values:
  @table @samp
  @item very
  strictly conform to a older more strict version of the spec or reference software
  @item strict
  strictly conform to all the things in the spec no matter what the consequences
  @item normal
  
  @item unofficial
  allow unofficial extensions
  @item experimental
  allow non-standardized experimental things
  @end table
  @item -b_qoffset[:stream_specifier] @var{float} (@emph{output,video})
  QP offset between P- and B-frames
  @item -err_detect[:stream_specifier] @var{flags} (@emph{input/output,audio,video,subtitles})
  set error detection flags
  
  Possible values:
  @table @samp
  @item crccheck
  verify embedded CRCs
  @item bitstream
  detect bitstream specification deviations
  @item buffer
  detect improper bitstream length
  @item explode
  abort decoding on minor error detection
  @item ignore_err
  ignore errors
  @item careful
  consider things that violate the spec, are fast to check and have not been seen in the wild as errors
  @item compliant
  consider all spec non compliancies as errors
  @item aggressive
  consider things that a sane encoder should not do as an error
  @end table
  @item -mpeg_quant[:stream_specifier] @var{integer} (@emph{output,video})
  use MPEG quantizers instead of H.263
  @item -maxrate[:stream_specifier] @var{integer} (@emph{output,audio,video})
  maximum bitrate (in bits/s). Used for VBV together with bufsize.
  @item -minrate[:stream_specifier] @var{integer} (@emph{output,audio,video})
  minimum bitrate (in bits/s). Most useful in setting up a CBR encode. It is of little use otherwise.
  @item -bufsize[:stream_specifier] @var{integer} (@emph{output,audio,video})
  set ratecontrol buffer size (in bits)
  @item -i_qfactor[:stream_specifier] @var{float} (@emph{output,video})
  QP factor between P- and I-frames
  @item -i_qoffset[:stream_specifier] @var{float} (@emph{output,video})
  QP offset between P- and I-frames
  @item -dct[:stream_specifier] @var{integer} (@emph{output,video})
  DCT algorithm
  
  Possible values:
  @table @samp
  @item auto
  autoselect a good one
  @item fastint
  fast integer
  @item int
  accurate integer
  @item mmx
  
  @item altivec
  
  @item faan
  floating point AAN DCT
  @end table
  @item -lumi_mask[:stream_specifier] @var{float} (@emph{output,video})
  compresses bright areas stronger than medium ones
  @item -tcplx_mask[:stream_specifier] @var{float} (@emph{output,video})
  temporal complexity masking
  @item -scplx_mask[:stream_specifier] @var{float} (@emph{output,video})
  spatial complexity masking
  @item -p_mask[:stream_specifier] @var{float} (@emph{output,video})
  inter masking
  @item -dark_mask[:stream_specifier] @var{float} (@emph{output,video})
  compresses dark areas stronger than medium ones
  @item -idct[:stream_specifier] @var{integer} (@emph{input/output,video})
  select IDCT implementation
  
  Possible values:
  @table @samp
  @item auto
  
  @item int
  
  @item simple
  
  @item simplemmx
  
  @item arm
  
  @item altivec
  
  @item simplearm
  
  @item simplearmv5te
  
  @item simplearmv6
  
  @item simpleneon
  
  @item xvid
  
  @item xvidmmx
  deprecated, for compatibility only
  @item faani
  floating point AAN IDCT
  @item simpleauto
  
  @end table
  @item -ec[:stream_specifier] @var{flags} (@emph{input,video})
  set error concealment strategy
  
  Possible values:
  @table @samp
  @item guess_mvs
  iterative motion vector (MV) search (slow)
  @item deblock
  use strong deblock filter for damaged MBs
  @item favor_inter
  favor predicting from the previous frame
  @end table
  @item -pred[:stream_specifier] @var{integer} (@emph{output,video})
  prediction method
  
  Possible values:
  @table @samp
  @item left
  
  @item plane
  
  @item median
  
  @end table
  @item -aspect[:stream_specifier] @var{rational number} (@emph{output,video})
  sample aspect ratio
  @item -sar[:stream_specifier] @var{rational number} (@emph{output,video})
  sample aspect ratio
  @item -debug[:stream_specifier] @var{flags} (@emph{input/output,audio,video,subtitles})
  print specific debug info
  
  Possible values:
  @table @samp
  @item pict
  picture info
  @item rc
  rate control
  @item bitstream
  
  @item mb_type
  macroblock (MB) type
  @item qp
  per-block quantization parameter (QP)
  @item dct_coeff
  
  @item green_metadata
  
  @item skip
  
  @item startcode
  
  @item er
  error recognition
  @item mmco
  memory management control operations (H.264)
  @item bugs
  
  @item buffers
  picture buffer allocations
  @item thread_ops
  threading operations
  @item nomc
  skip motion compensation
  @end table
  @item -dia_size[:stream_specifier] @var{integer} (@emph{output,video})
  diamond type & size for motion estimation
  @item -last_pred[:stream_specifier] @var{integer} (@emph{output,video})
  amount of motion predictors from the previous frame
  @item -preme[:stream_specifier] @var{integer} (@emph{output,video})
  pre motion estimation
  @item -pre_dia_size[:stream_specifier] @var{integer} (@emph{output,video})
  diamond type & size for motion estimation pre-pass
  @item -subq[:stream_specifier] @var{integer} (@emph{output,video})
  sub-pel motion estimation quality
  @item -me_range[:stream_specifier] @var{integer} (@emph{output,video})
  limit motion vectors range (1023 for DivX player)
  @item -global_quality[:stream_specifier] @var{integer} (@emph{output,audio,video})
  @item -coder[:stream_specifier] @var{integer} (@emph{output,video})
  
  Possible values:
  @table @samp
  @item vlc
  variable length coder / Huffman coder
  @item ac
  arithmetic coder
  @item raw
  raw (no encoding)
  @item rle
  run-length coder
  @end table
  @item -context[:stream_specifier] @var{integer} (@emph{output,video})
  context model
  @item -mbd[:stream_specifier] @var{integer} (@emph{output,video})
  macroblock decision algorithm (high quality mode)
  
  Possible values:
  @table @samp
  @item simple
  use mbcmp
  @item bits
  use fewest bits
  @item rd
  use best rate distortion
  @end table
  @item -sc_threshold[:stream_specifier] @var{integer} (@emph{output,video})
  scene change threshold
  @item -nr[:stream_specifier] @var{integer} (@emph{output,video})
  noise reduction
  @item -rc_init_occupancy[:stream_specifier] @var{integer} (@emph{output,video})
  number of bits which should be loaded into the rc buffer before decoding starts
  @item -threads[:stream_specifier] @var{integer} (@emph{input/output,audio,video})
  set the number of threads
  
  Possible values:
  @table @samp
  @item auto
  autodetect a suitable number of threads to use
  @end table
  @item -dc[:stream_specifier] @var{integer} (@emph{output,video})
  intra_dc_precision
  @item -nssew[:stream_specifier] @var{integer} (@emph{output,video})
  nsse weight
  @item -skip_top[:stream_specifier] @var{integer} (@emph{input,video})
  number of macroblock rows at the top which are skipped
  @item -skip_bottom[:stream_specifier] @var{integer} (@emph{input,video})
  number of macroblock rows at the bottom which are skipped
  @item -profile[:stream_specifier] @var{integer} (@emph{output,audio,video})
  
  Possible values:
  @table @samp
  @item unknown
  
  @item main10
  
  @end table
  @item -level[:stream_specifier] @var{integer} (@emph{output,audio,video})
  
  Possible values:
  @table @samp
  @item unknown
  
  @end table
  @item -lowres[:stream_specifier] @var{integer} (@emph{input,audio,video})
  decode at 1= 1/2, 2=1/4, 3=1/8 resolutions
  @item -skip_threshold[:stream_specifier] @var{integer} (@emph{output,video})
  frame skip threshold
  @item -skip_factor[:stream_specifier] @var{integer} (@emph{output,video})
  frame skip factor
  @item -skip_exp[:stream_specifier] @var{integer} (@emph{output,video})
  frame skip exponent
  @item -skipcmp[:stream_specifier] @var{integer} (@emph{output,video})
  frame skip compare function
  
  Possible values:
  @table @samp
  @item sad
  sum of absolute differences, fast
  @item sse
  sum of squared errors
  @item satd
  sum of absolute Hadamard transformed differences
  @item dct
  sum of absolute DCT transformed differences
  @item psnr
  sum of squared quantization errors (avoid, low quality)
  @item bit
  number of bits needed for the block
  @item rd
  rate distortion optimal, slow
  @item zero
  0
  @item vsad
  sum of absolute vertical differences
  @item vsse
  sum of squared vertical differences
  @item nsse
  noise preserving sum of squared differences
  @item dctmax
  
  @item chroma
  
  @item msad
  sum of absolute differences, median predicted
  @end table
  @item -cmp[:stream_specifier] @var{integer} (@emph{output,video})
  full-pel ME compare function
  
  Possible values:
  @table @samp
  @item sad
  sum of absolute differences, fast
  @item sse
  sum of squared errors
  @item satd
  sum of absolute Hadamard transformed differences
  @item dct
  sum of absolute DCT transformed differences
  @item psnr
  sum of squared quantization errors (avoid, low quality)
  @item bit
  number of bits needed for the block
  @item rd
  rate distortion optimal, slow
  @item zero
  0
  @item vsad
  sum of absolute vertical differences
  @item vsse
  sum of squared vertical differences
  @item nsse
  noise preserving sum of squared differences
  @item dctmax
  
  @item chroma
  
  @item msad
  sum of absolute differences, median predicted
  @end table
  @item -subcmp[:stream_specifier] @var{integer} (@emph{output,video})
  sub-pel ME compare function
  
  Possible values:
  @table @samp
  @item sad
  sum of absolute differences, fast
  @item sse
  sum of squared errors
  @item satd
  sum of absolute Hadamard transformed differences
  @item dct
  sum of absolute DCT transformed differences
  @item psnr
  sum of squared quantization errors (avoid, low quality)
  @item bit
  number of bits needed for the block
  @item rd
  rate distortion optimal, slow
  @item zero
  0
  @item vsad
  sum of absolute vertical differences
  @item vsse
  sum of squared vertical differences
  @item nsse
  noise preserving sum of squared differences
  @item dctmax
  
  @item chroma
  
  @item msad
  sum of absolute differences, median predicted
  @end table
  @item -mbcmp[:stream_specifier] @var{integer} (@emph{output,video})
  macroblock compare function
  
  Possible values:
  @table @samp
  @item sad
  sum of absolute differences, fast
  @item sse
  sum of squared errors
  @item satd
  sum of absolute Hadamard transformed differences
  @item dct
  sum of absolute DCT transformed differences
  @item psnr
  sum of squared quantization errors (avoid, low quality)
  @item bit
  number of bits needed for the block
  @item rd
  rate distortion optimal, slow
  @item zero
  0
  @item vsad
  sum of absolute vertical differences
  @item vsse
  sum of squared vertical differences
  @item nsse
  noise preserving sum of squared differences
  @item dctmax
  
  @item chroma
  
  @item msad
  sum of absolute differences, median predicted
  @end table
  @item -ildctcmp[:stream_specifier] @var{integer} (@emph{output,video})
  interlaced DCT compare function
  
  Possible values:
  @table @samp
  @item sad
  sum of absolute differences, fast
  @item sse
  sum of squared errors
  @item satd
  sum of absolute Hadamard transformed differences
  @item dct
  sum of absolute DCT transformed differences
  @item psnr
  sum of squared quantization errors (avoid, low quality)
  @item bit
  number of bits needed for the block
  @item rd
  rate distortion optimal, slow
  @item zero
  0
  @item vsad
  sum of absolute vertical differences
  @item vsse
  sum of squared vertical differences
  @item nsse
  noise preserving sum of squared differences
  @item dctmax
  
  @item chroma
  
  @item msad
  sum of absolute differences, median predicted
  @end table
  @item -precmp[:stream_specifier] @var{integer} (@emph{output,video})
  pre motion estimation compare function
  
  Possible values:
  @table @samp
  @item sad
  sum of absolute differences, fast
  @item sse
  sum of squared errors
  @item satd
  sum of absolute Hadamard transformed differences
  @item dct
  sum of absolute DCT transformed differences
  @item psnr
  sum of squared quantization errors (avoid, low quality)
  @item bit
  number of bits needed for the block
  @item rd
  rate distortion optimal, slow
  @item zero
  0
  @item vsad
  sum of absolute vertical differences
  @item vsse
  sum of squared vertical differences
  @item nsse
  noise preserving sum of squared differences
  @item dctmax
  
  @item chroma
  
  @item msad
  sum of absolute differences, median predicted
  @end table
  @item -mblmin[:stream_specifier] @var{integer} (@emph{output,video})
  minimum macroblock Lagrange factor (VBR)
  @item -mblmax[:stream_specifier] @var{integer} (@emph{output,video})
  maximum macroblock Lagrange factor (VBR)
  @item -mepc[:stream_specifier] @var{integer} (@emph{output,video})
  motion estimation bitrate penalty compensation (1.0 = 256)
  @item -skip_loop_filter[:stream_specifier] @var{integer} (@emph{input,video})
  skip loop filtering process for the selected frames
  
  Possible values:
  @table @samp
  @item none
  discard no frame
  @item default
  discard useless frames
  @item noref
  discard all non-reference frames
  @item bidir
  discard all bidirectional frames
  @item nokey
  discard all frames except keyframes
  @item nointra
  discard all frames except I frames
  @item all
  discard all frames
  @end table
  @item -skip_idct[:stream_specifier] @var{integer} (@emph{input,video})
  skip IDCT/dequantization for the selected frames
  
  Possible values:
  @table @samp
  @item none
  discard no frame
  @item default
  discard useless frames
  @item noref
  discard all non-reference frames
  @item bidir
  discard all bidirectional frames
  @item nokey
  discard all frames except keyframes
  @item nointra
  discard all frames except I frames
  @item all
  discard all frames
  @end table
  @item -skip_frame[:stream_specifier] @var{integer} (@emph{input,video})
  skip decoding for the selected frames
  
  Possible values:
  @table @samp
  @item none
  discard no frame
  @item default
  discard useless frames
  @item noref
  discard all non-reference frames
  @item bidir
  discard all bidirectional frames
  @item nokey
  discard all frames except keyframes
  @item nointra
  discard all frames except I frames
  @item all
  discard all frames
  @end table
  @item -bidir_refine[:stream_specifier] @var{integer} (@emph{output,video})
  refine the two motion vectors used in bidirectional macroblocks
  @item -brd_scale[:stream_specifier] @var{integer} (@emph{output,video})
  downscale frames for dynamic B-frame decision
  @item -keyint_min[:stream_specifier] @var{integer} (@emph{output,video})
  minimum interval between IDR-frames
  @item -refs[:stream_specifier] @var{integer} (@emph{output,video})
  reference frames to consider for motion compensation
  @item -chromaoffset[:stream_specifier] @var{integer} (@emph{output,video})
  chroma QP offset from luma
  @item -trellis[:stream_specifier] @var{integer} (@emph{output,audio,video})
  rate-distortion optimal quantization
  @item -mv0_threshold[:stream_specifier] @var{integer} (@emph{output,video})
  @item -b_sensitivity[:stream_specifier] @var{integer} (@emph{output,video})
  adjust sensitivity of b_frame_strategy 1
  @item -compression_level[:stream_specifier] @var{integer} (@emph{output,audio,video})
  @item -min_prediction_order[:stream_specifier] @var{integer} (@emph{output,audio})
  @item -max_prediction_order[:stream_specifier] @var{integer} (@emph{output,audio})
  @item -timecode_frame_start[:stream_specifier] @var{integer} (@emph{output,video})
  GOP timecode frame start number, in non-drop-frame format
  @item -channel_layout[:stream_specifier] @var{value} (@emph{input/output,audio})
  
  Possible values:
  @table @samp
  @end table
  @item -request_channel_layout[:stream_specifier] @var{value} (@emph{input,audio})
  
  Possible values:
  @table @samp
  @end table
  @item -rc_max_vbv_use[:stream_specifier] @var{float} (@emph{output,video})
  @item -rc_min_vbv_use[:stream_specifier] @var{float} (@emph{output,video})
  @item -ticks_per_frame[:stream_specifier] @var{integer} (@emph{input/output,audio,video})
  @item -color_primaries[:stream_specifier] @var{integer} (@emph{input/output,video})
  color primaries
  
  Possible values:
  @table @samp
  @item bt709
  BT.709
  @item unknown
  Unspecified
  @item bt470m
  BT.470 M
  @item bt470bg
  BT.470 BG
  @item smpte170m
  SMPTE 170 M
  @item smpte240m
  SMPTE 240 M
  @item film
  Film
  @item bt2020
  BT.2020
  @item smpte428
  SMPTE 428-1
  @item smpte428_1
  SMPTE 428-1
  @item smpte431
  SMPTE 431-2
  @item smpte432
  SMPTE 422-1
  @item jedec-p22
  JEDEC P22
  @item ebu3213
  EBU 3213-E
  @item unspecified
  Unspecified
  @end table
  @item -color_trc[:stream_specifier] @var{integer} (@emph{input/output,video})
  color transfer characteristics
  
  Possible values:
  @table @samp
  @item bt709
  BT.709
  @item unknown
  Unspecified
  @item gamma22
  BT.470 M
  @item gamma28
  BT.470 BG
  @item smpte170m
  SMPTE 170 M
  @item smpte240m
  SMPTE 240 M
  @item linear
  Linear
  @item log100
  Log
  @item log316
  Log square root
  @item iec61966-2-4
  IEC 61966-2-4
  @item bt1361e
  BT.1361
  @item iec61966-2-1
  IEC 61966-2-1
  @item bt2020-10
  BT.2020 - 10 bit
  @item bt2020-12
  BT.2020 - 12 bit
  @item smpte2084
  SMPTE 2084
  @item smpte428
  SMPTE 428-1
  @item arib-std-b67
  ARIB STD-B67
  @item unspecified
  Unspecified
  @item log
  Log
  @item log_sqrt
  Log square root
  @item iec61966_2_4
  IEC 61966-2-4
  @item bt1361
  BT.1361
  @item iec61966_2_1
  IEC 61966-2-1
  @item bt2020_10bit
  BT.2020 - 10 bit
  @item bt2020_12bit
  BT.2020 - 12 bit
  @item smpte428_1
  SMPTE 428-1
  @end table
  @item -colorspace[:stream_specifier] @var{integer} (@emph{input/output,video})
  color space
  
  Possible values:
  @table @samp
  @item rgb
  RGB
  @item bt709
  BT.709
  @item unknown
  Unspecified
  @item fcc
  FCC
  @item bt470bg
  BT.470 BG
  @item smpte170m
  SMPTE 170 M
  @item smpte240m
  SMPTE 240 M
  @item ycgco
  YCGCO
  @item bt2020nc
  BT.2020 NCL
  @item bt2020c
  BT.2020 CL
  @item smpte2085
  SMPTE 2085
  @item chroma-derived-nc
  Chroma-derived NCL
  @item chroma-derived-c
  Chroma-derived CL
  @item ictcp
  ICtCp
  @item unspecified
  Unspecified
  @item ycocg
  YCGCO
  @item bt2020_ncl
  BT.2020 NCL
  @item bt2020_cl
  BT.2020 CL
  @end table
  @item -color_range[:stream_specifier] @var{integer} (@emph{input/output,video})
  color range
  
  Possible values:
  @table @samp
  @item unknown
  Unspecified
  @item tv
  MPEG (219*2^(n-8))
  @item pc
  JPEG (2^n-1)
  @item unspecified
  Unspecified
  @item mpeg
  MPEG (219*2^(n-8))
  @item jpeg
  JPEG (2^n-1)
  @end table
  @item -chroma_sample_location[:stream_specifier] @var{integer} (@emph{input/output,video})
  chroma sample location
  
  Possible values:
  @table @samp
  @item unknown
  Unspecified
  @item left
  Left
  @item center
  Center
  @item topleft
  Top-left
  @item top
  Top
  @item bottomleft
  Bottom-left
  @item bottom
  Bottom
  @item unspecified
  Unspecified
  @end table
  @item -slices[:stream_specifier] @var{integer} (@emph{output,video})
  set the number of slices, used in parallelized encoding
  @item -thread_type[:stream_specifier] @var{flags} (@emph{input/output,audio,video})
  select multithreading type
  
  Possible values:
  @table @samp
  @item slice
  
  @item frame
  
  @end table
  @item -audio_service_type[:stream_specifier] @var{integer} (@emph{output,audio})
  audio service type
  
  Possible values:
  @table @samp
  @item ma
  Main Audio Service
  @item ef
  Effects
  @item vi
  Visually Impaired
  @item hi
  Hearing Impaired
  @item di
  Dialogue
  @item co
  Commentary
  @item em
  Emergency
  @item vo
  Voice Over
  @item ka
  Karaoke
  @end table
  @item -request_sample_fmt[:stream_specifier] @var{value} (@emph{input,audio})
  sample format audio decoders should prefer
  
  Possible values:
  @table @samp
  @end table
  @item -sub_charenc[:stream_specifier] @var{string} (@emph{input,subtitles})
  set input text subtitles character encoding
  @item -sub_charenc_mode[:stream_specifier] @var{flags} (@emph{input,subtitles})
  set input text subtitles character encoding mode
  
  Possible values:
  @table @samp
  @item do_nothing
  
  @item auto
  
  @item pre_decoder
  
  @item ignore
  
  @end table
  @item -sub_text_format[:stream_specifier] @var{integer} (@emph{input,subtitles})
  set decoded text subtitle format
  
  Possible values:
  @table @samp
  @item ass
  
  @item ass_with_timings
  
  @end table
  @item -refcounted_frames[:stream_specifier] @var{value} (@emph{input,audio,video})
  @item -side_data_only_packets[:stream_specifier] @var{value} (@emph{output,audio,video})
  @item -apply_cropping[:stream_specifier] @var{value} (@emph{input,video})
  @item -skip_alpha[:stream_specifier] @var{value} (@emph{input,video})
  Skip processing alpha
  @item -field_order[:stream_specifier] @var{integer} (@emph{input/output,video})
  Field order
  
  Possible values:
  @table @samp
  @item progressive
  
  @item tt
  
  @item bb
  
  @item tb
  
  @item bt
  
  @end table
  @item -dump_separator[:stream_specifier] @var{string} (@emph{input/output,audio,video,subtitles})
  set information dump field separator
  @item -codec_whitelist[:stream_specifier] @var{string} (@emph{input,audio,video,subtitles})
  List of decoders that are allowed to be used
  @item -max_pixels[:stream_specifier] @var{integer} (@emph{input/output,audio,video,subtitles})
  Maximum number of pixels
  @item -max_samples[:stream_specifier] @var{integer} (@emph{input/output,audio})
  Maximum number of samples
  @item -hwaccel_flags[:stream_specifier] @var{flags} (@emph{input,video})
  
  Possible values:
  @table @samp
  @item ignore_level
  ignore level even if the codec level used is unknown or higher than the maximum supported level reported by the hardware driver
  @item allow_high_depth
  allow to output YUV pixel formats with a different chroma sampling than 4:2:0 and/or other than 8 bits per component
  @item allow_profile_mismatch
  attempt to decode anyway if HW accelerated decoder's supported profiles do not exactly match the stream
  @end table
  @item -extra_hw_frames[:stream_specifier] @var{integer} (@emph{input,video})
  Number of extra hardware frames to allocate for the user
  @item -discard_damaged_percentage[:stream_specifier] @var{integer} (@emph{input,video})
  Percentage of damaged samples to discard a frame
  @end table