@table @option
@item compression_level
Sets the compression level, which chooses defaults for many other options
-if they are not set explicitly.
+if they are not set explicitly. Valid values are from 0 to 12, 5 is the
+default.
@item frame_size
Sets the size of the frames in samples per channel.
@end table
+@anchor{opusenc}
+@section opus
+
+Opus encoder.
+
+This is a native FFmpeg encoder for the Opus format. Currently its in development and
+only implements the CELT part of the codec. Its quality is usually worse and at best
+is equal to the libopus encoder.
+
+@subsection Options
+
+@table @option
+@item b
+Set bit rate in bits/s. If unspecified it uses the number of channels and the layout
+to make a good guess.
+
+@item opus_delay
+Sets the maximum delay in milliseconds. Lower delays than 20ms will very quickly
+decrease quality.
+@end table
+
@anchor{libfdk-aac-enc}
@section libfdk_aac
@end table
@end table
+@anchor{mjpegenc}
+@section mjpeg
+
+Motion JPEG encoder.
+
+@subsection Options
+
+@table @option
+@item huffman
+Set the huffman encoding strategy. Possible values:
+
+@table @samp
+@item default
+Use the default huffman tables. This is the default strategy.
+
+@item optimal
+Compute and use optimal huffman tables.
+
+@end table
+@end table
+
@anchor{wavpackenc}
@section wavpack