ffmpeg/doc/scaler.texi

   1 @anchor{scaler_options}
   2 @chapter Scaler Options
   3 @c man begin SCALER OPTIONS
   4
   5 The video scaler supports the following named options.
   6
   7 Options may be set by specifying -@var{option} @var{value} in the
   8 FFmpeg tools. For programmatic use, they can be set explicitly in the
   9 @code{SwsContext} options or through the @file{libavutil/opt.h} API.
  10
  11 @table @option
  12
  13 @anchor{sws_flags}
  14 @item sws_flags
  15 Set the scaler flags. This is also used to set the scaling
  16 algorithm. Only a single algorithm should be selected.
  17
  18 It accepts the following values:
  19 @table @samp
  20 @item fast_bilinear
  21 Select fast bilinear scaling algorithm.
  22
  23 @item bilinear
  24 Select bilinear scaling algorithm.
  25
  26 @item bicubic
  27 Select bicubic scaling algorithm.
  28
  29 @item experimental
  30 Select experimental scaling algorithm.
  31
  32 @item neighbor
  33 Select nearest neighbor rescaling algorithm.
  34
  35 @item area
  36 Select averaging area rescaling algorithm.
  37
  38 @item bicublin
  39 Select bicubic scaling algorithm for the luma component, bilinear for
  40 chroma components.
  41
  42 @item gauss
  43 Select Gaussian rescaling algorithm.
  44
  45 @item sinc
  46 Select sinc rescaling algorithm.
  47
  48 @item lanczos
  49 Select lanczos rescaling algorithm.
  50
  51 @item spline
  52 Select natural bicubic spline rescaling algorithm.
  53
  54 @item print_info
  55 Enable printing/debug logging.
  56
  57 @item accurate_rnd
  58 Enable accurate rounding.
  59
  60 @item full_chroma_int
  61 Enable full chroma interpolation.
  62
  63 @item full_chroma_inp
  64 Select full chroma input.
  65
  66 @item bitexact
  67 Enable bitexact output.
  68 @end table
  69
  70 @item srcw
  71 Set source width.
  72
  73 @item srch
  74 Set source height.
  75
  76 @item dstw
  77 Set destination width.
  78
  79 @item dsth
  80 Set destination height.
  81
  82 @item src_format
  83 Set source pixel format (must be expressed as an integer).
  84
  85 @item dst_format
  86 Set destination pixel format (must be expressed as an integer).
  87
  88 @item src_range
  89 Select source range.
  90
  91 @item dst_range
  92 Select destination range.
  93
  94 @item param0, param1
  95 Set scaling algorithm parameters. The specified values are specific of
  96 some scaling algorithms and ignored by others. The specified values
  97 are floating point number values.
  98
  99 @item sws_dither
 100 Set the dithering algorithm. Accepts one of the following
 101 values. Default value is @samp{auto}.
 102
 103 @table @samp
 104 @item auto
 105 automatic choice
 106
 107 @item none
 108 no dithering
 109
 110 @item bayer
 111 bayer dither
 112
 113 @item ed
 114 error diffusion dither
 115
 116 @item a_dither
 117 arithmetic dither, based using addition
 118
 119 @item x_dither
 120 arithmetic dither, based using xor (more random/less apparent patterning that
 121 a_dither).
 122
 123 @end table
 124
 125 @end table
 126
 127 @c man end SCALER OPTIONS