Four years later. Mahone mails a birthday card to Pam, then kisses and walks off hand in hand with Felicia Lang.

Then we calculate the Lagrangian cost to balance the rate and distortion, by which we can find the best encoding mode.

At the same time, this paper also improves the process of RDO in the macroblock layer. Based on the prediction bits of the macroblock, the Lagrange coefficient has been modified adaptively.