Different encoding results were observed for y4m and yuv input on top of !197 (merged). It was identified due to different length of yuv and y4m files, i.e., whether including the copyright frame of some sequences (e.g. BQSQuare, BlowingBubbles). The same issue in VTM was fixed during the integration of JVET-Y0155, where an additional parameter LastValidFrame was introduced. In addition, several temporal filtering issues were fixed in JVET-Y0155. In this MR, JVET-Y0155 is ported from VTM.