@@ -313,6 +313,21 @@ video quantiser scale blur (VBR)

 @item -qcomp compression

 video quantiser scale compression (VBR)

+@item -lmin lambda

+minimum video lagrange factor (VBR)

+@item -lmax lambda

+max video lagrange factor (VBR)

+@item -mblmin lambda

+minimum macroblock quantizer scale (VBR)

+@item -mblmax lambda

+maximum macroblock quantizer scale (VBR)

+

+These four options (lmin, lmax, mblmin, mblmax) use 'lambda' units,

+but you may use the QP2LAMBDA constant to easily convert from 'q' units:

+@example

+ffmpeg -i src.ext -lmax 21*QP2LAMBDA dst.ext

+@end example

+

 @item -rc_init_cplx complexity

 initial complexity for single pass encoding

 @item -b_qfactor factor