If youve done this before why are you asking us? 🙂 Youre demuxing HDV with DVDSP?? Your either mistaken or really really high 🙂
This is incorrect. HDV is not compliant. Not even almost complaint 🙂 Encore will reencoding your file so why not encode correctly using Compressor to H.264 ?
Futhermore, 1440×1080 50i is only supported when encoded AVC or VC-1 only. I believe, since you know HDV is a H.262/MPEG-2 Part 2 based, its ready to drop into a BD authoring tool? This is not the case.
Here are the official specs
High Definition Video
1920x1080x59.94i(=29.97fps interlaced), 50i(=25fps interlaced) (16:9)
1920x1080x24p, 23.976p (16:9)
1440x1080x59.94i, 50i (16:9) AVC / VC-1 only
1440x1080x24p, 23.976p (16:9) AVC / VC-1 only
1280x720x59.94p, 50p (16:9)
1280x720x24p, 23.976p (16:9)
Standard Definition Video
720x480x59.94i (4:3/16:9)
720x576x50i (4:3/16:9)