High-Efficiency Video Coding (HEVC) represents the cutting-edge in video compression standards for high-resolution visual data. The prowess of HEVC lies in its utilization of prediction, capitalizing on signal redundancies to attain optimal compression efficiency. A key feature, the Intra-Picture prediction block, anticipates a block within the present frame by referencing information from adjacent blocks within that same frame. Nonetheless, this innovation introduces a significant surge in encoding complexity. Addressing this surge and reducing the computational demands of the coder becomes imperative. The present research introduces an innovative algorithm targeting mode decisions grounded on intra prediction. This algorithm assesses the texture intricacy of the coding unit and establishes an optimal threshold, enabling swift coding unit size selection. Subsequently, an enhanced search procedure minimizes the candidate modes of prediction. Culminating this approach, early termination gets implemented for rate-distortion optimized quantization (RDOQ) within Intra prediction. Findings indicate that the novel algorithm facilitates a reduction of approximately 40.9% in encoding duration.