@table @option
@item auto-alt-ref
Enable use of alternate reference frames (2-pass only).
+Values greater than 1 enable multi-layer alternate reference frames (VP9 only).
@item arnr-max-frames
Set altref noise reduction max frame count.
@item arnr-type
midpoint is passed in rather than calculated for a specific clip or chunk.
The valid range is [0, 10000]. 0 (default) uses standard VBR.
+@item enable-tpl @var{boolean}
+Enable temporal dependency model.
@end table
@end table
@item tune
Set the x265 tune parameter.
+@item profile
+Set profile restrictions.
+
+@item crf
+Set the quality for constant quality mode.
+
@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.
@option{bf} / @option{max_b_frames}
@item
@option{profile}
+
+If not set, this will be determined automatically from the format of the input
+frames and the profiles supported by the driver.
@item
@option{level}
@item
Size / quality tradeoff: higher values are smaller / worse quality.
@item
@option{qmin}
-(only: @option{qmax} is not supported)
+@item
+@option{qmax}
@item
@option{i_qfactor} / @option{i_quant_factor}
@item
@option{b_qfactor} / @option{b_quant_factor}
@item
@option{b_qoffset} / @option{b_quant_offset}
+@item
+@option{slices}
+@end itemize
+
+All encoders support the following options:
+@itemize
+@item
+@option{low_power}
+
+Some drivers/platforms offer a second encoder for some codecs intended to use
+less power than the default encoder; setting this option will attempt to use
+that encoder. Note that it may support a reduced feature set, so some other
+options may not be available in this mode.
@end itemize
+Each encoder also has its own specific options:
@table @option
@item h264_vaapi
@option{level} sets the value of @emph{level_idc}.
@table @option
-@item low_power
-Use low-power encoding mode.
@item coder
Set entropy encoder (default is @emph{cabac}). Possible values:
@item cavlc
Use CAVLC.
@end table
+
+@item aud
+Include access unit delimiters in the stream (not included by default).
+
+@item sei
+Set SEI message types to include.
+Some combination of the following values:
+@table @samp
+@item identifier
+Include a @emph{user_data_unregistered} message containing information about
+the encoder.
+@item timing
+Include picture timing parameters (@emph{buffering_period} and
+@emph{pic_timing} messages).
+@item recovery_point
+Include recovery points where appropriate (@emph{recovery_point} messages).
+@end table
+
@end table
@item hevc_vaapi
@option{profile} and @option{level} set the values of
@emph{general_profile_idc} and @emph{general_level_idc} respectively.
+@table @option
+@item aud
+Include access unit delimiters in the stream (not included by default).
+
+@item tier
+Set @emph{general_tier_flag}. This may affect the level chosen for the stream
+if it is not explicitly specified.
+
+@item sei
+Set SEI message types to include.
+Some combination of the following values:
+@table @samp
+@item hdr
+Include HDR metadata if the input frames have it
+(@emph{mastering_display_colour_volume} and @emph{content_light_level}
+messages).
+@end table
+
+@end table
+
@item mjpeg_vaapi
-Always encodes using the standard quantisation and huffman tables -
-@option{global_quality} scales the standard quantisation table (range 1-100).
+Only baseline DCT encoding is supported. The encoder always uses the standard
+quantisation and huffman tables - @option{global_quality} scales the standard
+quantisation table (range 1-100).
+
+For YUV, 4:2:0, 4:2:2 and 4:4:4 subsampling modes are supported. RGB is also
+supported, and will create an RGB JPEG.
+
+@table @option
+@item jfif
+Include JFIF header in each frame (not included by default).
+@item huffman
+Include standard huffman tables (on by default). Turning this off will save
+a few hundred bytes in each output frame, but may lose compatibility with some
+JPEG decoders which don't fully handle MJPEG.
+@end table
@item mpeg2_vaapi
@option{profile} and @option{level} set the value of @emph{profile_and_level_indication}.
-No rate control is supported.
-
@item vp8_vaapi
B-frames are not supported.
@end table
+@section libxavs2
+
+xavs2 AVS2-P2/IEEE1857.4 encoder wrapper.
+
+This encoder requires the presence of the libxavs2 headers and library
+during configuration. You need to explicitly configure the build with
+@option{--enable-libxavs2}.
+
+@subsection Options
+
+@table @option
+@item lcu_row_threads
+Set the number of parallel threads for rows from 1 to 8 (default 5).
+
+@item initial_qp
+Set the xavs2 quantization parameter from 1 to 63 (default 34). This is
+used to set the initial qp for the first frame.
+
+@item qp
+Set the xavs2 quantization parameter from 1 to 63 (default 34). This is
+used to set the qp value under constant-QP mode.
+
+@item max_qp
+Set the max qp for rate control from 1 to 63 (default 55).
+
+@item min_qp
+Set the min qp for rate control from 1 to 63 (default 20).
+
+@item speed_level
+Set the Speed level from 0 to 9 (default 0). Higher is better but slower.
+
+@item log_level
+Set the log level from -1 to 3 (default 0). -1: none, 0: error,
+1: warning, 2: info, 3: debug.
+
+@item xavs2-params
+Set xavs2 options using a list of @var{key}=@var{value} couples separated
+by ":".
+
+For example to specify libxavs2 encoding options with @option{-xavs2-params}:
+
+@example
+ffmpeg -i input -c:v libxavs2 -xavs2-params preset_level=5 output.avs2
+@end example
+@end table
+
@c man end VIDEO ENCODERS
@chapter Subtitles Encoders
projects / ffmpeg / blobdiff