The paper deals with AVC, HEVC and VVC video encoder modeling using a universal formula for the output bitrate as a function of the quantization step. It is shown that this model is relatively accurate and may be used for bitrate control. Moreover, from the model for AVC, the models for HEVC and VVC can be quickly derived, thus reducing the processing time needed for VVC model parameters derivation. The model is applicable to multiview plus depth video coding, both using simulcast and MV-HEVC or 3-D HEVC. The applications to bitrate control for coding of multiview plus depth video are considered together with the relevant experimental data.