Abstract: The present disclosure relates to a method and a system for controlling bit rate and quantization step size of each frame of a plurality of frames of a video in encoding of the video. The method includes determining a bit budget for the each frame by utilizing a first pre-determined criterion, altering computed target bits based on complexity of the each frame by utilizing a third pre-determined criterion, evaluating quantization states for the each frame using a pre-determined quantizing criterion, and updating a controlling module based on data of the each frame. The target bits are computed for the each frame by utilizing a second pre-determined criterion and the third pre-determined criterion is based on the determined bit budget and a histogram gradient. The evaluated quantization state is allotted to the each frame based on the determined bit budget and the computed target bits.

Abstract: The present disclosure provides a method and a system for determining a prediction mode for performing intra prediction of a plurality of frames of a digital video in H.264 video coding format. The method and system include a determination module to determine a 16×16 prediction mode from a first set of plurality of prediction modes for each of intra 16×16 macroblock utilizing a first pre-defined criteria and decide a 4×4 prediction mode from a second set of plurality of prediction modes for each of intra 4×4 sub-macroblock utilizing a second pre-defined criteria, a comparison module to compare computational cost of the 16×16 prediction mode and the 4×4 prediction mode and a declaration module to declare one of the 16×16 prediction mode and the 4×4 prediction mode as the prediction mode for each of the macroblock based on the compared computational cost.

Abstract: The a method and system of making a coding mode decision for a given macroblock of a current frame is disclosed. A codec for making the coding mode decision is provided. The codec disclosed herein performs prediction of the motion vectors in inter-frames. The macroblock may be coded in one of six inter modes, such as skip mode, P16×16 mode, P16×8 mode, P8×16 mode, and P8×8 mode or in intra modes such as intra 4×4 mode and intra 16×16 mode. Each block in the inter-frame is predicted from a block of equal size in the reference frame. In each mode, the codec finds a best match, that is, a motion vector for each block size in the reference frame and calculates a corresponding cost. The codec evaluates each mode based on cost and the mode with the least cost is selected as best mode for coding the given macroblock.

Abstract: The present disclosure relates to a method and a system for controlling bit rate and quantization step size of each frame of a plurality of frames of a video in encoding of the video. The method includes determining a bit budget for the each frame by utilizing a first pre-determined criterion, altering computed target bits based on complexity of the each frame by utilizing a third pre-determined criterion, evaluating quantization states for the each frame using a pre-determined quantizing criterion, and updating a controlling module based on data of the each frame. The target bits are computed for the each frame by utilizing a second pre-determined criterion and the third pre-determined criterion is based on the determined bit budget and a histogram gradient. The evaluated quantization state is allotted to the each frame based on the determined bit budget and the computed target bits.

Abstract: The a method and system of making a coding mode decision for a given macroblock of a current frame is disclosed. A codec for making the coding mode decision is provided. The codec disclosed herein performs prediction of the motion vectors in inter-frames. The macroblock may be coded in one of six inter modes, such as skip mode, P16×16 mode, P16×8 mode, P8×16 mode, and P8×8 mode or in intra modes such as intra 4×4 mode and intra 16×16 mode. Each block in the inter-frame is predicted from a block of equal size in the reference frame. In each mode, the codec finds a best match, that is, a motion vector for each block size in the reference frame and calculates a corresponding cost. The codec evaluates each mode based on cost and the mode with the least cost is selected as best mode for coding the given macroblock.

Abstract: The present disclosure provides a method and a system for determining a prediction mode for performing intra prediction of a plurality of frames of a digital video in H.264 video coding format. The method and system include a determination module to determine a 16×16 prediction mode from a first set of plurality of prediction modes for each of intra 16×16 macroblock utilizing a first pre-defined criteria and decide a 4×4 prediction mode from a second set of plurality of prediction modes for each of intra 4×4 sub-macroblock utilizing a second pre-defined criteria, a comparison module to compare computational cost of the 16×16 prediction mode and the 4×4 prediction mode and a declaration module to declare one of the 16×16 prediction mode and the 4×4 prediction mode as the prediction mode for each of the macroblock based on the compared computational cost.