Originally posted by: Darth Mallwalker
Ohterwise you're wasting bit-budget by encoding the same fields twice.
Yes, DVD stores fields not frames, but there's not much point wasting space storing two copies of the same field.
If you store telecined "frames" (two fields from different film frames) on your DVD, it'll look crap needlessly on progressive displays (computer screen, plasma TV, projector, etc.)
Not to mention, color correction routines will work best on progressive frames.
Fortunately, the X0 team members already understand the benefits of IVTC'ing their sources.
Originally posted by: Alan Partridge
The source doesn't need to be deinterlaced before transferring to DVD.
But it should be inverse-telecined (IVTC) before transferring to DVD.The source doesn't need to be deinterlaced before transferring to DVD.
Ohterwise you're wasting bit-budget by encoding the same fields twice.
Yes, DVD stores fields not frames, but there's not much point wasting space storing two copies of the same field.
If you store telecined "frames" (two fields from different film frames) on your DVD, it'll look crap needlessly on progressive displays (computer screen, plasma TV, projector, etc.)
Not to mention, color correction routines will work best on progressive frames.
Fortunately, the X0 team members already understand the benefits of IVTC'ing their sources.
I see you edited your post for clarity.
My point still stands though. As long as each field is flagged correctly as belonging to the correct frame, then the deinterlacer will know which fields belong together, regardless of any fields stored as mixed pairs. A 23.976fps telecine and a 29.97fps telecine will have no discernable difference on your display as long as the flags are set correctly in either instance (which unfortunately, is very often not the case)