I want to pretend my HDV camera is AVCHD.

How do I reencode my 1080i HDV to 1080p AVCHD?


I have a Canon HV20, if that matters

well, you choose 1080/30p AVCHD output in any conversion or editing software you use...if you have ATI 4600 or higher you may try ATI AVIVO converter that you can download from their site and access in Basic mode in Catalyst...

NOTE: You cannot make 1080/60p AVCHD video, you are stuck with 1080/30p and loss of fluidity if that's important to you...

I want to pretend my HDV camera is AVCHD.

How do I reencode my 1080i HDV to 1080p AVCHD?


Well, you can't. If you shoot 1080i video, that's pretty much what you have. Say you shot at 1080/60i and what, you want 1080/30p? That's easy enough.. you can de-interlace the 1080/60i, and render out to 1080/30p. But you still have essentially 1080/60i video. The individual fields of your 1080/60i won't necessarily line up with one another, due to the time between fields... this will still be visible in the 1080/30p video. You can blend, interpolate, or run other algorithms to change this, but you're probably going to suffer at the least an effective loss of spatial resolution, as well as the temporal resolution you're voluntarily giving up.

Going down to 1080/24p, you're now having to do a pulldown or temporal as well as spatial interpolation. You can, but it'll look questionable.

The best method I've found, in a frame rate conversion, is to oversample and interpolate. You can so this in Sony Vegas.. you can set a "supersampling" factor, which basically turns your 30p into 60p or 120p or whatever, from the editor's point of view. This is then used as the basis for interpolated rendering. I used this to convert NTSC to PAL once on a 2 hour film.. it worked dramatically better than the commerical sample rate conversion programs I demoes. But it took 8.5 days of rendering on my PC of the day.