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Dangers/Method of scaling HD footage for an SD final?
I have a project that is HD. It’s a 3 camera shoot, and one of the locked off cameras needs to be scaled up (zoomed in) for re-framing, and to show better detail.
What are the dangers in doing that, and/or what is the right way to do it. (i’m concerned about messing with the interlacing while reframing)
MORE INFO:
Footage was AVCHD, imported as ProRes 422. 1440x1080i, 29.97
It’s being compressed for SD DVD.Right now all of the footage is in an HD sequence.
Method 1: Scale and reframe each particular shot while in the current HD sequence –> Compress for DVD
Method 2: Create a new Prores 422 SD sequence, then copy and paste the clips into the new sequence -> scale the particular clips to 100% and reframe –> Compress for DVD
Ideas?
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8 Replies
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Just scale away in the present sequence Bryan. Just be sure that any repositioning on the y-axis falls on a full and even number. That’s an old trick to insure that the frames are lined-up properly with scan lines and render properly.
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, Indie Film & Documentary, and Film History & Appreciations forums.
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Use method 2. You don’t gain anything by enlarging the SD footage, better to just work in an SD sequence. BTW set your video processing to high precision YUV and motion to best.
Have as good a day as you can.
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Thanks guys for the reply.
So far, the score is:
Method 1: 1
Method 2: 1Is there a tiebreaker out there? =)
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[Chris Poisson] “Use method 2. You don’t gain anything by enlarging the SD footage, better to just work in an SD sequence.”
Chris,
That really depends on how much scaling he requires. I little bit of upscaling to simply repo a shot is not going to be a problem for him, and it will most likely not be visible later when his material winds up on DVD. Furthermore, scaling in SD assumes that he will never use his HD master for any purpose.
BTW, if you don’t agree Chris you’re gonna be in big trouble next week when you and Diane come to visit, cuz I’ll short-sheet your bed and overcook your lobster.
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, Indie Film & Documentary, and Film History & Appreciations forums.
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David Wins!
=)
But seriously thanks. More than likely the client will ask for a 720p version, so we’ll do any changes in the current HD sequence.
Thanks DW
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[Bryan Fowler] “Is there a tiebreaker out there? =)”
Bryan,
Scale and repo one shot on the timeline, re-render, and see what you think…
Or, if you never intend to use HD for anything related to this project then use #2.
BTW, keep in mind, the quality Chris’ sleep and lobster hang in the balance…
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, Indie Film & Documentary, and Film History & Appreciations forums.
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I guess I missed the part about him wanting a 720 sequence.
Have as good a day as you can.
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Just remember, Augie can be spanked with an overcooked lobster tail…
Have as good a day as you can.
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