all quantizers and adjusting some individual quantizer a little. Will tune
itself based on whether @option{aac_is}, @option{aac_ms} and @option{aac_pns}
are enabled.
-This is the default choice for a coder.
@item anmr
Average noise to mask ratio (ANMR) trellis-based solution.
@item fast
Constant quantizer method.
-This method sets a constant quantizer for all bands. This is the fastest of all
-the methods and has no rate control or support for @option{aac_is} or
-@option{aac_pns}.
-Not recommended.
+Uses a cheaper version of twoloop algorithm that doesn't try to do as many
+clever adjustments. Worse with low bitrates (less than 64kbps), but is better
+and much faster at higher bitrates.
+This is the default choice for a coder
@end table
@end table
@item row-mt @var{boolean}
Enable row based multi-threading.
+@item tune-content
+Set content type: default (0), screen (1), film (2).
+@item corpus-complexity
+Corpus VBR mode is a variant of standard VBR where the complexity distribution
+midpoint is passed in rather than calculated for a specific clip or chunk.
+
+The valid range is [0, 10000]. 0 (default) uses standard VBR.
@end table
@end table