Text-like
@end table
+@item lumi_aq
+Enable lumi masking adaptive quantization when set to 1. Default is 0
+(disabled).
+
+@item variance_aq
+Enable variance adaptive quantization when set to 1. Default is 0
+(disabled).
+
+When combined with @option{lumi_aq}, the resulting quality will not
+be better than any of the two specified individually. In other
+words, the resulting quality will be the worse one of the two
+effects.
+
+@item ssim
+Set structural similarity (SSIM) displaying method. Possible values:
+
+@table @samp
+@item off
+Disable displaying of SSIM information.
+
+@item avg
+Output average SSIM at the end of encoding to stdout. The format of
+showing the average SSIM is:
+
+@example
+Average SSIM: %f
+@end example
+
+For users who are not familiar with C, %f means a float number, or
+a decimal (e.g. 0.939232).
+
+@item frame
+Output both per-frame SSIM data during encoding and average SSIM at
+the end of encoding to stdout. The format of per-frame information
+is:
+
+@example
+ SSIM: avg: %1.3f min: %1.3f max: %1.3f
+@end example
+
+For users who are not familiar with C, %1.3f means a float number
+rounded to 3 digits after the dot (e.g. 0.932).
+
+@end table
+
+@item ssim_acc
+Set SSIM accuracy. Valid options are integers within the range of
+0-4, while 0 gives the most accurate result and 4 computes the
+fastest.
+
@end table
@section libx264
The following options are supported by the x264 wrapper, the x264-equivalent
options follow the Libav ones.
-@multitable @columnfractions .2 .2
+@multitable { } { } { }
@item b @tab bitrate
-Libav @code{b} option is expressed in bits/s, x264 @code{bitrate} in kilobits/s.
+@tab Libav @code{b} option is expressed in bits/s, x264 @code{bitrate} in kilobits/s.
@item bf @tab bframes
-Maximum number of B-frames.
+@tab Maximum number of B-frames.
@item g @tab keyint
-Maximum GOP size.
+@tab Maximum GOP size.
@item qmin @tab qpmin
+@tab Minimum quantizer scale.
@item qmax @tab qpmax
+@tab Maximum quantizer scale.
@item qdiff @tab qpstep
+@tab Maximum difference between quantizer scales.
@item qblur @tab qblur
+@tab Quantizer curve blur
@item qcomp @tab qcomp
+@tab Quantizer curve compression factor
@item refs @tab ref
+@tab Number of reference frames each P-frame can use. The range is from @var{0-16}.
@item sc_threshold @tab scenecut
+@tab Sets the threshold for the scene change detection.
@item trellis @tab trellis
+@tab Performs Trellis quantization to increase efficiency. Enabled by default.
@item nr @tab nr
-Noise reduction.
+@tab Noise reduction.
@item me_range @tab merange
+@tab Maximum range of the motion search in pixels.
@item me_method @tab me
+@tab Full-pixel motion estimation method.
@item subq @tab subme
+@tab Sub-pixel motion estimation method.
@item b_strategy @tab b-adapt
-@item keyint_min @tab keyint-min
+@tab Adaptive B-frame placement decision algorithm. Use only on first-pass.
+@item keyint_min @tab min-keyint
+@tab Minimum GOP size.
@item coder @tab cabac
-Set coder to @code{ac} to use CABAC.
+@tab Set coder to @code{ac} to use CABAC.
@item cmp @tab chroma-me
-Set to @code{chroma} to use chroma motion estimation.
+@tab Set to @code{chroma} to use chroma motion estimation.
@item threads @tab threads
+@tab Number of encoding threads.
@item thread_type @tab sliced_threads
-Set to @code{slice} to use sliced threading instead of frame threading.
+@tab Set to @code{slice} to use sliced threading instead of frame threading.
@item flags -cgop @tab open-gop
-Set @code{-cgop} to use recovery points to close GOPs.
+@tab Set @code{-cgop} to use recovery points to close GOPs.
@item rc_init_occupancy @tab vbv-init
-Initial buffer occupancy.
+@tab Initial buffer occupancy.
@end multitable
@subsection Private Options
projects / ffmpeg / blobdiff