60i to 30p in Final Cut at DVinfo.net

Patrick Jenkins · July 30th, 2005, 09:06 PM

How can I convert 60i to 30p in Final Cut? The best method I can think of is to edit in 60i then make a new sequence, drop the 60i into it and deinterlace. Is this the usual way or is there some way better?

If it helps, I'm looking for the quasi frame style chop rather than smooth 60i.

Glenn Chan · July 30th, 2005, 09:52 PM

An adaptive de-interlace filter will give you better results.

With normal de-interlacing, there's two methods:

A- Interpolate a single field.
This takes a single field and uses it for the whole image. This gives the least vertical resolution.

B- Blend fields.
Blurs the two fields together. This gives a little more vertical resolution, but is not as good as adaptive de-interlacing.

Adaptive de-interlacing looks for motion and only de-interlaces motion areas. Static areas are untouched and retain their original resolution (about 360 lines of vertical resolution on most cameras). Progressive cameras have about 480 lines of vertical resolution.

Not sure what adaptive de-interlace filters are available for Final Cut, sorry.

Patrick Jenkins · July 30th, 2005, 10:47 PM

Once I've deinterlaced, should I export to a frame based or field based format? I'm thinking that field based is probably not what I want - I don't want to reintroduce interlacing to the edit.

(correct?)

Glenn Chan · July 30th, 2005, 11:12 PM

You should be fine exporting to "field-based" formats. In other programs, you may have to tell it your source is progressive instead of upper/lower field first. Most programs work best with progressive images anyways, and may default to assuming the input is a progressive source.

Patrick Jenkins · July 30th, 2005, 11:21 PM

Thanks a bunch!

Boyd Ostroff · July 31st, 2005, 08:59 AM

Joe's filters has a very good adaptive deinterlacing plug-in for FCP, plus a lot of cool stuff:

http://joesfilters.com/

DVFilm Maker also does a great job, but it's actually a little standalone application which can process batches of clips in the background while you do other things:

http://www.dvfilm.com/maker/

The nice thing is that both of these offer free trial versions. I own both, although I do my deinterlacing with DVFilm and use Joes Filters for other things.

Conan Lefevre · August 10th, 2005, 10:23 PM

"You should be fine exporting to "field-based" formats. In other programs, you may have to tell it your source is progressive instead of upper/lower field first. Most programs work best with progressive images anyways, and may default to assuming the input is a progressive source.'

From Compressor you would export as lower/upper, or progressive?

July 30th, 2005, 09:06 PM	#1
Patrick Jenkins Major Player Join Date: Sep 2004 Location: Maryland, USA Posts: 382	60i to 30p in Final Cut How can I convert 60i to 30p in Final Cut? The best method I can think of is to edit in 60i then make a new sequence, drop the 60i into it and deinterlace. Is this the usual way or is there some way better? If it helps, I'm looking for the quasi frame style chop rather than smooth 60i. __________________ PAL shooter in NTSC territory

July 30th, 2005, 10:47 PM	#3
Patrick Jenkins Major Player Join Date: Sep 2004 Location: Maryland, USA Posts: 382	Once I've deinterlaced, should I export to a frame based or field based format? I'm thinking that field based is probably not what I want - I don't want to reintroduce interlacing to the edit. (correct?) __________________ PAL shooter in NTSC territory

July 30th, 2005, 11:21 PM	#5
Patrick Jenkins Major Player Join Date: Sep 2004 Location: Maryland, USA Posts: 382	Thanks a bunch! __________________ PAL shooter in NTSC territory

July 30th, 2005, 09:52 PM	#2
Glenn Chan Inner Circle Join Date: Jun 2003 Location: Toronto, Canada Posts: 4,750	An adaptive de-interlace filter will give you better results. With normal de-interlacing, there's two methods: A- Interpolate a single field. This takes a single field and uses it for the whole image. This gives the least vertical resolution. B- Blend fields. Blurs the two fields together. This gives a little more vertical resolution, but is not as good as adaptive de-interlacing. Adaptive de-interlacing looks for motion and only de-interlaces motion areas. Static areas are untouched and retain their original resolution (about 360 lines of vertical resolution on most cameras). Progressive cameras have about 480 lines of vertical resolution. Not sure what adaptive de-interlace filters are available for Final Cut, sorry.

July 30th, 2005, 11:12 PM	#4
Glenn Chan Inner Circle Join Date: Jun 2003 Location: Toronto, Canada Posts: 4,750	You should be fine exporting to "field-based" formats. In other programs, you may have to tell it your source is progressive instead of upper/lower field first. Most programs work best with progressive images anyways, and may default to assuming the input is a progressive source.

July 31st, 2005, 08:59 AM	#6
Boyd Ostroff Wrangler Join Date: Dec 2002 Location: Mays Landing, NJ Posts: 11,787	Joe's filters has a very good adaptive deinterlacing plug-in for FCP, plus a lot of cool stuff: http://joesfilters.com/ DVFilm Maker also does a great job, but it's actually a little standalone application which can process batches of clips in the background while you do other things: http://www.dvfilm.com/maker/ The nice thing is that both of these offer free trial versions. I own both, although I do my deinterlacing with DVFilm and use Joes Filters for other things.

August 10th, 2005, 10:23 PM	#7
Conan Lefevre Tourist Join Date: Aug 2005 Posts: 1	"You should be fine exporting to "field-based" formats. In other programs, you may have to tell it your source is progressive instead of upper/lower field first. Most programs work best with progressive images anyways, and may default to assuming the input is a progressive source.' From Compressor you would export as lower/upper, or progressive?