Default value is 0.
+@item eld_v2
+Enable ELDv2 (LD-MPS extension for ELD stereo signals) for ELDv2 if set to 1,
+disabled if set to 0.
+
+Note that option is available when fdk-aac version (AACENCODER_LIB_VL0.AACENCODER_LIB_VL1.AACENCODER_LIB_VL2) > (4.0.0).
+
+Default value is 0.
+
@item signaling
Set SBR/PS signaling style.
@end table
+@section librav1e
+
+rav1e AV1 encoder wrapper.
+
+Requires the presence of the rav1e headers and library during configuration.
+You need to explicitly configure the build with @code{--enable-librav1e}.
+
+@subsection Options
+
+@table @option
+@item qmax
+Sets the maximum quantizer to use when using bitrate mode.
+
+@item qmin
+Sets the minimum quantizer to use when using bitrate mode.
+
+@item qp
+Uses quantizer mode to encode at the given quantizer (0-255).
+
+@item speed
+Selects the speed preset (0-10) to encode with.
+
+@item tiles
+Selects how many tiles to encode with.
+
+@item tile-rows
+Selects how many rows of tiles to encode with.
+
+@item tile-columns
+Selects how many columns of tiles to encode with.
+
+@item rav1e-params
+Set rav1e options using a list of @var{key}=@var{value} pairs separated
+by ":". See @command{rav1e --help} for a list of options.
+
+For example to specify librav1e encoding options with @option{-rav1e-params}:
+
+@example
+ffmpeg -i input -c:v librav1e -b:v 500K -rav1e-params speed=5:low_latency=true output.mp4
+@end example
+
+@end table
+
@section libaom-av1
libaom AV1 encoder wrapper.
Cyclic refresh.
@end table
+@item tune (@emph{tune})
+Set the distortion metric the encoder is tuned with. Default is @code{psnr}.
+
+@table @samp
+@item psnr (@emph{0})
+
+@item ssim (@emph{1})
+@end table
+
@item lag-in-frames
Set the maximum number of frames which the encoder may keep in flight
at any one time for lookahead purposes. Defaults to the internal
Enable Constrained Directional Enhancement Filter. The libaom-av1
encoder enables CDEF by default.
+@item enable-restoration (@emph{boolean})
+Enable Loop Restoration Filter. Default is true for libaom-av1.
+
@item enable-global-motion (@emph{boolean})
Enable the use of global motion for block prediction. Default is true.
Increase sharpness at the expense of lower PSNR.
The valid range is [0, 7].
-@item VP8-specific options
-@table @option
@item ts-parameters
Sets the temporal scalability configuration using a :-separated list of
key=value pairs. For example, to specify temporal scalability parameters
with @code{ffmpeg}:
@example
ffmpeg -i INPUT -c:v libvpx -ts-parameters ts_number_layers=3:\
-ts_target_bitrate=250000,500000,1000000:ts_rate_decimator=4,2,1:\
-ts_periodicity=4:ts_layer_id=0,2,1,2 OUTPUT
+ts_target_bitrate=250,500,1000:ts_rate_decimator=4,2,1:\
+ts_periodicity=4:ts_layer_id=0,2,1,2:ts_layering_mode=3 OUTPUT
@end example
Below is a brief explanation of each of the parameters, please
refer to @code{struct vpx_codec_enc_cfg} in @code{vpx/vpx_encoder.h} for more
@item ts_number_layers
Number of temporal coding layers.
@item ts_target_bitrate
-Target bitrate for each temporal layer.
+Target bitrate for each temporal layer (in kbps).
+(bitrate should be inclusive of the lower temporal layer).
@item ts_rate_decimator
Frame rate decimation factor for each temporal layer.
@item ts_periodicity
Length of the sequence defining frame temporal layer membership.
@item ts_layer_id
Template defining the membership of frames to temporal layers.
+@item ts_layering_mode
+(optional) Selecting the temporal structure from a set of pre-defined temporal layering modes.
+Currently supports the following options.
+@table @option
+@item 0
+No temporal layering flags are provided internally,
+relies on flags being passed in using @code{metadata} field in @code{AVFrame}
+with following keys.
+@table @option
+@item vp8-flags
+Sets the flags passed into the encoder to indicate the referencing scheme for
+the current frame.
+Refer to function @code{vpx_codec_encode} in @code{vpx/vpx_encoder.h} for more
+details.
+@item temporal_id
+Explicitly sets the temporal id of the current frame to encode.
+@end table
+@item 2
+Two temporal layers. 0-1...
+@item 3
+Three temporal layers. 0-2-1-2...; with single reference frame.
+@item 4
+Same as option "3", except there is a dependency between
+the two temporal layer 2 frames within the temporal period.
@end table
@end table
@subsection Options
@table @option
+@item b
+Sets target video bitrate.
+
+@item bf
+
+@item g
+Set the GOP size.
+
+@item keyint_min
+Minimum GOP size.
+
+@item refs
+Number of reference frames each P-frame can use. The range is from @var{1-16}.
+
@item preset
Set the x265 preset.
@item crf
Set the quality for constant quality mode.
+@item qp
+Set constant quantization rate control method parameter.
+
+@item qmin
+Minimum quantizer scale.
+
+@item qmax
+Maximum quantizer scale.
+
+@item qdiff
+Maximum difference between quantizer scales.
+
+@item qblur
+Quantizer curve blur
+
+@item qcomp
+Quantizer curve compression factor
+
+@item i_qfactor
+
+@item b_qfactor
+
@item forced-idr
Normally, when forcing a I-frame type, the encoder can select any type
of I-frame. This option forces it to choose an IDR-frame.
@section QSV encoders
-The family of Intel QuickSync Video encoders (MPEG-2, H.264 and HEVC)
+The family of Intel QuickSync Video encoders (MPEG-2, H.264, HEVC, JPEG/MJPEG and VP9)
The ratecontrol method is selected as follows:
@subsection Options
@table @option
+@item palette
+Specify the global palette used by the bitmaps.
+
+The format for this option is a string containing 16 24-bits hexadecimal
+numbers (without 0x prefix) separated by commas, for example @code{0d00ee,
+ee450d, 101010, eaeaea, 0ce60b, ec14ed, ebff0b, 0d617a, 7b7b7b, d1d1d1,
+7b2a0e, 0d950c, 0f007b, cf0dec, cfa80c, 7c127b}.
+
@item even_rows_fix
When set to 1, enable a work-around that makes the number of pixel rows
even in all subtitles. This fixes a problem with some players that