Advanced Audio Coding (AAC) encoder.
-This encoder is the default AAC encoder, natively implemented into FFmpeg. Its
-quality is on par or better than libfdk_aac at the default bitrate of 128kbps.
-This encoder also implements more options, profiles and samplerates than
-other encoders (with only the AAC-HE profile pending to be implemented) so this
-encoder has become the default and is the recommended choice.
+This encoder is the default AAC encoder, natively implemented into FFmpeg.
@subsection Options
so if you allow the use of GPL, you should configure with
@code{--enable-gpl --enable-nonfree --enable-libfdk-aac}.
-This encoder is considered to produce output on par or worse at 128kbps to the
-@ref{aacenc,,the native FFmpeg AAC encoder} but can often produce better
-sounding audio at identical or lower bitrates and has support for the
-AAC-HE profiles.
+This encoder has support for the AAC-HE profiles.
VBR encoding, enabled through the @option{vbr} or @option{flags
+qscale} options, is experimental and only works with some
@item packet_loss (@emph{expect-loss})
Set expected packet loss percentage. The default is 0.
+@item fec (@emph{n/a})
+Enable inband forward error correction. @option{packet_loss} must be non-zero
+to take advantage - frequency of FEC 'side-data' is proportional to expected packet loss.
+Default is disabled.
+
@item application (N.A.)
Set intended application type. Valid options are listed below:
@end table
-@anchor{libwavpack}
-@section libwavpack
-
-A wrapper providing WavPack encoding through libwavpack.
-
-Only lossless mode using 32-bit integer samples is supported currently.
-
-Requires the presence of the libwavpack headers and library during
-configuration. You need to explicitly configure the build with
-@code{--enable-libwavpack}.
-
-Note that a libavcodec-native encoder for the WavPack codec exists so users can
-encode audios with this codec without using this encoder. See @ref{wavpackenc}.
-
-@subsection Options
-
-@command{wavpack} command line utility's corresponding options are listed in
-parentheses, if any.
-
-@table @option
-@item frame_size (@emph{--blocksize})
-Default is 32768.
-
-@item compression_level
-Set speed vs. compression tradeoff. Acceptable arguments are listed below:
-
-@table @samp
-@item 0 (@emph{-f})
-Fast mode.
-
-@item 1
-Normal (default) settings.
-
-@item 2 (@emph{-h})
-High quality.
-
-@item 3 (@emph{-hh})
-Very high quality.
-
-@item 4-8 (@emph{-hh -x}@var{EXTRAPROC})
-Same as @samp{3}, but with extra processing enabled.
-
-@samp{4} is the same as @option{-x2} and @samp{8} is the same as @option{-x6}.
-
-@end table
-@end table
-
@anchor{mjpegenc}
@section mjpeg
WavPack lossless audio encoder.
-This is a libavcodec-native WavPack encoder. There is also an encoder based on
-libwavpack, but there is virtually no reason to use that encoder.
-
-See also @ref{libwavpack}.
-
@subsection Options
The equivalent options for @command{wavpack} command line utility are listed in
@file{libavcodec/wavpackenc.c}.
@item compression_level (@emph{-f}, @emph{-h}, @emph{-hh}, and @emph{-x})
-This option's syntax is consistent with @ref{libwavpack}'s.
@end table
@subsubsection Private options
@subsection Options
@table @option
-@item format
+@item format @var{integer}
Can be set to either @code{j2k} or @code{jp2} (the default) that
makes it possible to store non-rgb pix_fmts.
+@item tile_width @var{integer}
+Sets tile width. Range is 1 to 1073741824. Default is 256.
+
+@item tile_height @var{integer}
+Sets tile height. Range is 1 to 1073741824. Default is 256.
+
+@item pred @var{integer}
+Allows setting the discrete wavelet transform (DWT) type
+@table @option
+@item dwt97int (Lossy)
+@item dwt53 (Lossless)
+@end table
+Default is @code{dwt97int}
+
+@item sop @var{boolean}
+Enable this to add SOP marker at the start of each packet. Disabled by default.
+
+@item eph @var{boolean}
+Enable this to add EPH marker at the end of each packet header. Disabled by default.
+
+@item prog @var{integer}
+Sets the progression order to be used by the encoder.
+Possible values are:
+@table @option
+@item lrcp
+@item rlcp
+@item rpcl
+@item pcrl
+@item cprl
+@end table
+Set to @code{lrcp} by default.
+
+@item layer_rates @var{string}
+By default, when this option is not used, compression is done using the quality metric.
+This option allows for compression using compression ratio. The compression ratio for each
+level could be specified. The compression ratio of a layer @code{l} species the what ratio of
+total file size is contained in the first @code{l} layers.
+
+Example usage:
+
+@example
+ffmpeg -i input.bmp -c:v jpeg2000 -layer_rates "100,10,1" output.j2k
+@end example
+
+This would compress the image to contain 3 layers, where the data contained in the
+first layer would be compressed by 1000 times, compressed by 100 in the first two layers,
+and shall contain all data while using all 3 layers.
+
@end table
@section librav1e
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 block copy mode for intra block prediction. This mode is
useful for screen content. Default is true.
+@item enable-rect-partitions (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable rectangular partitions. Default is true.
+
+@item enable-1to4-partitions (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable 1:4/4:1 partitions. Default is true.
+
+@item enable-ab-partitions (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable AB shape partitions. Default is true.
+
+@item enable-angle-delta (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable angle delta intra prediction. Default is true.
+
+@item enable-cfl-intra (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable chroma predicted from luma intra prediction. Default is true.
+
+@item enable-filter-intra (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable filter intra predictor. Default is true.
+
+@item enable-intra-edge-filter (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable intra edge filter. Default is true.
+
+@item enable-smooth-intra (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable smooth intra prediction mode. Default is true.
+
+@item enable-paeth-intra (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable paeth predictor in intra prediction. Default is true.
+
+@item enable-palette (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable palette prediction mode. Default is true.
+
+@item enable-flip-idtx (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable extended transform type, including FLIPADST_DCT, DCT_FLIPADST,
+FLIPADST_FLIPADST, ADST_FLIPADST, FLIPADST_ADST, IDTX, V_DCT, H_DCT,
+V_ADST, H_ADST, V_FLIPADST, H_FLIPADST. Default is true.
+
+@item enable-tx64 (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable 64-pt transform. Default is true.
+
+@item reduced-tx-type-set (@emph{boolean}) (Requires libaom >= v2.0.0)
+Use reduced set of transform types. Default is false.
+
+@item use-intra-dct-only (@emph{boolean}) (Requires libaom >= v2.0.0)
+Use DCT only for INTRA modes. Default is false.
+
+@item use-inter-dct-only (@emph{boolean}) (Requires libaom >= v2.0.0)
+Use DCT only for INTER modes. Default is false.
+
+@item use-intra-default-tx-only (@emph{boolean}) (Requires libaom >= v2.0.0)
+Use Default-transform only for INTRA modes. Default is false.
+
+@item enable-ref-frame-mvs (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable temporal mv prediction. Default is true.
+
+@item enable-reduced-reference-set (@emph{boolean}) (Requires libaom >= v2.0.0)
+Use reduced set of single and compound references. Default is false.
+
+@item enable-obmc (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable obmc. Default is true.
+
+@item enable-dual-filter (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable dual filter. Default is true.
+
+@item enable-diff-wtd-comp (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable difference-weighted compound. Default is true.
+
+@item enable-dist-wtd-comp (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable distance-weighted compound. Default is true.
+
+@item enable-onesided-comp (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable one sided compound. Default is true.
+
+@item enable-interinter-wedge (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable interinter wedge compound. Default is true.
+
+@item enable-interintra-wedge (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable interintra wedge compound. Default is true.
+
+@item enable-masked-comp (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable masked compound. Default is true.
+
+@item enable-interintra-comp (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable interintra compound. Default is true.
+
+@item enable-smooth-interintra (@emph{boolean}) (Requires libaom >= v2.0.0)
+Enable smooth interintra mode. Default is true.
+
+@end table
+
+@section libsvtav1
+
+SVT-AV1 encoder wrapper.
+
+Requires the presence of the SVT-AV1 headers and library during configuration.
+You need to explicitly configure the build with @code{--enable-libsvtav1}.
+
+@subsection Options
+
+@table @option
+@item profile
+Set the encoding profile.
+
+@item level
+Set the operating point level.
+
+@item tier
+Set the operating point tier.
+
+@item rc
+Set the rate control mode to use.
+
+Possible modes:
+@table @option
+@item cqp
+Constant quantizer: use fixed values of qindex (dependent on the frame type)
+throughout the stream. This mode is the default.
+
+@item vbr
+Variable bitrate: use a target bitrate for the whole stream.
+
+@item cvbr
+Constrained variable bitrate: use a target bitrate for each GOP.
+@end table
+
+@item qmax
+Set the maximum quantizer to use when using a bitrate mode.
+
+@item qmin
+Set the minimum quantizer to use when using a bitrate mode.
+
+@item qp
+Set the quantizer used in cqp rate control mode (0-63).
+
+@item sc_detection
+Enable scene change detection.
+
+@item la_depth
+Set number of frames to look ahead (0-120).
+
+@item preset
+Set the quality-speed tradeoff, in the range 0 to 8. Higher values are
+faster but lower quality. Defaults to 8 (highest speed).
+
+@item tile_rows
+Set log2 of the number of rows of tiles to use (0-6).
+
+@item tile_columns
+Set log2 of the number of columns of tiles to use (0-4).
+
@end table
@section libkvazaar
@table @option
@item 0
No temporal layering flags are provided internally,
-relies on flags being passed in using metadata in AVFrame.
+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
@end table
+@section MediaFoundation
+
+This provides wrappers to encoders (both audio and video) in the
+MediaFoundation framework. It can access both SW and HW encoders.
+Video encoders can take input in either of nv12 or yuv420p form
+(some encoders support both, some support only either - in practice,
+nv12 is the safer choice, especially among HW encoders).
+
@section mpeg2
MPEG-2 video encoder.
@subsection Options
@table @option
+@item profile
+Select the mpeg2 profile to encode:
+
+@table @samp
+@item 422
+@item high
+@item ss
+Spatially Scalable
+@item snr
+SNR Scalable
+@item main
+@item simple
+@end table
+
+@item level
+Select the mpeg2 level to encode:
+
+@table @samp
+@item high
+@item high1440
+@item main
+@item low
+@end table
+
@item seq_disp_ext @var{integer}
Specifies if the encoder should write a sequence_display_extension to the
output.
messages).
@end table
+@item tiles
+Set the number of tiles to encode the input video with, as columns x rows.
+Larger numbers allow greater parallelism in both encoding and decoding, but
+may decrease coding efficiency.
+
@end table
@item mjpeg_vaapi