OT: Removing Interlacing on 1080i footage

Cliff Etzel wrote on 12/20/2007, 5:04 AM

Now that I'm making the move to HDV, I've begun to think about certain aspects of working with 1080 interlaced footage.

Since much of what I shoot is run and gun VJ style work along with shooting footage underwater, I was wondering about best workflow techniques for removing interlacing in the footage that will be acquired with my HC7's. I've noticed it especially with subjects moving across the screen and it is quite noticeable - and distracting.

Will the interlacing artifacts be noticeable on HDTV's that are progressive scan? If so, what techniques are there to both remove the jaggy's yet maintain the best image quality possible? One of Gearshifts features is downrezzing 1080i footage to 720p - any thoughts on this?

Once again, Vegas Pro has blown me away with what it's capable of doing and the Advocacy/Evangelizing to my colleagues within the Video Journalism community, especially now using Gearshift for field editing stories for internet broadcast.

Cliff Etzel - Solo Video Journalist
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Comments

GlennChan wrote on 12/29/2007, 12:30 AM

My non-scientific observations about watching material on a CRT:

60i looks weird. It doesn't deliver seamless motion. I just don't buy the argument that 60i has better-looking motion than say 30p.

24p with 3:2 pulldown looks like it has "sticky" motion sometimes on fast pans.

30p looks pretty similar to 24p

*sometimes CRTs will have a slight flicker to them

None really deliver perfect motion, though I think I prefer the look of progressive. I can't remember 24Psf. If you're watching a show, I pretty much forget about the motion once I get immersed in the show. Motion issues don't really stick out and aren't distracting.

For 3-D, 24p is not good enough and sticks out. It is noticeable and a little distracting.

Opampman wrote on 12/29/2007, 9:03 PM

John - I remember back in the 60's when I was a film Cinematographer panning with the Worall gear head and a Mitchell BNC trying to get smooth movement and the shots always looked like a flip card book with stuttering pans no matter how hard I tried to crank those gears smoothly. 24 fps is NOT the way to go!

MH_Stevens wrote on 12/31/2007, 1:03 PM

I have run the FX1 (1080i) for nearly three years now and whatever I have done the result has always been better staying with the interlaced way it was recorded. Even going to AVCHD for display on a 1080p monitor it's best NOT deinterlacing. I wont be making progressive projects until I get a progressive camera.