@@ -2899,6 +2899,13 @@ will refer only to P- or I-frames. When set to greater values multiple layers
of B-frames will be present, frames in each layer only referring to frames in
higher layers.
+@item trellis
+Trellis quantization can improve data compression in DCT-based encoding methods.
+It reduces the size of some DCT coefficients while recovering others to take their
+place. This process can increase quality by effectively finding the optimal
+quantization for each block to maximize the PSNR relative to bitrate.
+Set to off/I/P/B to disable or enable trellis quantization for I/P/B frames.
+
@item rc_mode
Set the rate control mode to use. A given driver may only support a subset of
modes.
Signed-off-by: Linjie Fu <linjie.fu@intel.com> --- doc/encoders.texi | 7 +++++++ 1 file changed, 7 insertions(+)