I need to export a native HDV timeline (1440x1080) timeline for PAL DVD authoring. I figured this would be simple. I just used the MPEG2-PAL presets in Media Encoder. But the resulting export has an odd problem with the bottom of the frame. The bottom frame line drifts very quickly up and down to a small, but definitely noticeable degree (about 5-6 pixels in SD). I've tried exporting it as a 16:9 file and as a letterboxed 4:3, and both have the exact same problem.