| 摘要 |
FIELD: information technology.SUBSTANCE: invention relates to video data encoding technologies. Disclosed is method of determining coefficient quantisation during coding of video frame. Method includes steps of receiving containing pixels video frame, performing frame conversion, wherein said conversion is frequency conversion, which generates transformation coefficients. Further, according to method evaluation of quantisation coefficient is performed, and histogram is created using video frame transformation coefficients. Besides, quantisation coefficient is determined using information from histogram, using estimate of encoded video frame size determined from histogram, and using previous coded frame size so that encoded frame size after quantisation was similar to previous coded frame sizes.EFFECT: technical result is increase in quality of encoded video without exceeding buffer due to similarity of encoded frame size after quantisation to previous coded frame sizes.20 cl, 5 dwg |
