I am attempting to transcode some ATSC MPEG-2 captures that have extra non-video data in the top eight lines (the original streams are 1920x1088 pixels). These video streams are also very frequently hybrid interlace/telecined content and the original streams include MPEG-2 field flags. If I crop and detelecine/deinterlace using -vf crop=1920:1080:0:8,filmdint, I get a clean picture but very bad motion with speedups and slowdowns because the crop appears to have stomped on the MPEG-2 field flags that filmdint wants to see to do a good job on mixed content. If I use put filmdint first and use its built-in crop (or if I follow filmdint with crop) using -vf filmdint=crop=1920:1080:0:8, I get smooth output (for the 24fps parts at least, which is what I want), but I get green and purple chroma artifacts at the top of the video frame, presumably from the influence of the data that has been cropped. (These same chroma artifacts appear just below the lines I want to crop if the crop option is left out.) Is there an alternative way to do this that will allow filmdint to see the field flags, but to also crop the frames without artifacts? Thanks. -jrs