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720P vs 1920 HD

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Bruce Wittman
720P vs 1920 HD
on Aug 13, 2010 at 3:27:30 pm

Hello Fellow Cowfolks!

I am an old BetaSP and miniDVCam tape guy. Now I am finally getting into the tapeless HD market with the Sony EX-1R. What HD resolution do you recommend that I shoot at for web and SD DVD and possible broadcast video shoots? Bear in mind that I am so new that I am not sure I am asking the right question. I have read 720P is really 1280 x 720. How is this HD? Or do I shoot 1080i with bigger files? I will be editing on FCP 6.06.
Most of my clients are corporate and need DVDs and web clips. Thanks for all you guys do for our community!

Bruce Wittman
Executive Producer

Eagle Video Productions, Inc.
2201 Woodnell Drive
Raleigh, NC 27603-5240

Website: http://www.eaglevideo.com
Email: bruce@eaglevideo.com

pho: 919-779-7891
cel: 919-818-5556


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Craig Seeman
Re: 720P vs 1920 HD
on Aug 13, 2010 at 4:05:16 pm

If only there were one setting to rule them all.
Broadcast is 1080i60 fields or 720p60 frames
Web is always Progressive
Many claim to bet better results downconverting from 720p over 1080i or p.
Editing 1080 in an SD timeline gives you room to create fake pans and dollies as well as shot reposition.
p60 or i60 will give you better temporal resolution that p30 or p24.
p24 gives you easy transfer to PAL 25fps format and works in 29.97 with pull down.

720 is 1280x720
1080 is 1920x1080
Both are broadcast HD

There generally is no "better" because it really depends on both your source and delivery.

For me:
720p60 for sports. I like the temporal resolution.
1080p30 for just about everything else. It's what I use most often.
1080p24 if I need a "universal"
720p24 for overcrank
720p30 I've used for digital signage (their delivery spec)
1080i60 I avoid because I dislike interlace and deinterlace in post is a compromise. It does give you a bit more light sensitivity than progressive.



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Rafael Amador
Re: 720P vs 1920 HD
on Aug 13, 2010 at 4:24:08 pm

I agree with Craig.
For the kind of jobs you are facing (broadcast, DVD, web), I would go to any of the 720p flavors.
Rafael

http://www.nagavideo.com


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Ron Pestes
Re: 720P vs 1920 HD
on Aug 13, 2010 at 4:36:50 pm

I have experimented extensivley with all formats for the web and stand by the 1080i for shooting and then using Compressors Youtube preset for sending HD to the web. It downconverts it to 720p but still looks better than if it was shot in 720p.

Apple Certified Master Pro FCS 2
Sony EX-3
MacBook Pro


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Bruce Wittman
Re: 720P vs 1920 HD
on Aug 13, 2010 at 7:25:35 pm

Hey Ron,

You suggested 1080i for shooting, but Craig says he stays away from 1080i because of the interlace-deinterlace issues. I plan to edit in whatever format I shoot in.

Bruce Wittman
Executive Producer

Eagle Video Productions, Inc.
2201 Woodnell Drive
Raleigh, NC 27603-5240

Website: http://www.eaglevideo.com
Email: bruce@eaglevideo.com

pho: 919-779-7891
cel: 919-818-5556


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Ron Pestes
Re: 720P vs 1920 HD
on Aug 13, 2010 at 9:16:01 pm

I know everyone has a different opinion but I shoot everything in 1080i and let Compressor do the changes. I get a noticably sharper picture when I shoot 1080i rather than 720p even after Compressor changes it to 720p for the web. I would recommend trying a short sequence both ways and seeing for yourself how it works. I am using FCS 3.

Apple Certified Master Pro FCS 2
Sony EX-3
MacBook Pro


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Craig Seeman
Re: 720P vs 1920 HD
on Aug 14, 2010 at 1:40:51 am

It depends on which way you're looking at things and the content.
1920x1080i is 1920x540 a field
1280x720 is 1280x720.
The difference in resolution is a bit closer given the way processing works but 720 can actually have slightly more resolution in one dimension compared to interlaced 1080.

Deinteralcing is never a good thing. It's always a compromise and it slows the workflow. At its worst is blending or doubling fields. At its best it may be doing edge and motion detection but even that's a compromise.



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Rafael Amador
Re: 720P vs 1920 HD
on Aug 14, 2010 at 4:33:02 am

[Craig Seeman] "Deinteralcing is never a good thing."
Neither Down/Up-scaling.
I've been using long time Compressor (best setting) but recently I've got horrified with the poor job he maid on downsizing (1080>720) compared with Shake.
rafael

http://www.nagavideo.com


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Bruce Wittman
Re: 720P vs 1920 HD
on Aug 16, 2010 at 6:39:57 pm

Should I go 1080i60 or 1080i30?

Bruce Wittman
Executive Producer

Eagle Video Productions, Inc.
2201 Woodnell Drive
Raleigh, NC 27603-5240

Website: http://www.eaglevideo.com
Email: bruce@eaglevideo.com

pho: 919-779-7891
cel: 919-818-5556


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Craig Seeman
Re: 720P vs 1920 HD
on Aug 16, 2010 at 7:10:49 pm

The answer has already been given in some detail.



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Bruce Wittman
Re: 720P vs 1920 HD
on Aug 16, 2010 at 7:29:23 pm

I was asking Ron Pestes specifically. My bad. He mentioned 1080i, but did not specify 1080i60 or 1080i30. Forgive me as I am new to all this.

Bruce Wittman
Executive Producer

Eagle Video Productions, Inc.
2201 Woodnell Drive
Raleigh, NC 27603-5240

Website: http://www.eaglevideo.com
Email: bruce@eaglevideo.com

pho: 919-779-7891
cel: 919-818-5556


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Craig Seeman
Re: 720P vs 1920 HD
on Aug 16, 2010 at 9:47:02 pm

Only one type of "i" and that's expressed two ways (rounding) either 30 frames or 60 fields (technically 29.97 or 59.94) but they're both the same.



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