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1440 vz 1920
Ok, so I finally thought of what’s been bugging me. I understand that HDV is basically:
1} 1920×1080 “squished” as part of its compression to fit onto tape
2} when captured, it plays back at 1920×1080 through Quick Time
2} in FCP it says the frame size is 1440×1080Right, now obviously 1440 by 1080 is actually a 4:3 resolution, hence why it plays back at 1920×1080 (which is correct 16:9). Now my question is, why then, if you make the canvas size 1920 by 1080 in FCP, does it pillar box the footage?
😀
Tom Morter-Laing
Certified Apple Product Proffessional, 2010
Degree; TV ProductioniMac 27″ intel i7 2.93GHz, 12GB RAM, ATI HD5750 [1GB GDDR5], 2TB Int. SATA with 2TB External HDD; (FW800).
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3 Replies
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[Thomas Morter-Laing] ” if you make the canvas size 1920 by 1080 in FCP, does it pillar box the footage?”
Will fill the canvas.
HDV uses HD pixels.
1440 x 1080 HD pixels makes the same frame than 1920 x 1080 Squared pixels.
Rafael -
Sorry that’s not quite what I meant, I mean if you set up the canvas to display 1920×1080 it DOES pillar box it. I understand the rectangular pixels hdv uses, but why does that not therefore fit into a 1920×1080 canvas?
😀
Tom Morter-Laing
Certified Apple Product Proffessional, 2010
Degree; TV ProductioniMac 27″ intel i7 2.93GHz, 12GB RAM, ATI HD5750 [1GB GDDR5], 2TB Int. SATA with 2TB External HDD; (FW800).
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1440 has a “PAR” – pixel aspect ratio. Meaning that each pixel has a shape, it isn’t square.
There are several dimensions that are non standard –
1440×1080 — 1280×1080 which both become 1920 when you multiply them by their respective PARs (1.33 and 1.5)
960×720 is an anamorphic version of 1280×720 (multiplied by 1.33)
In standard def, it’s the same way that the same dimensions (720×486 could become 16×9 or 4×3)…you don’t change the NUMBER of pixels, just the SHAPE.
This always creates an issue when played back in a media player, like Quicktime…because you are trying to interpret non-square pixels…and if that flag isn’t embedded correctly, it won’t play back right. It’s all about knowing what your source is and interpreting it correctly.
HTH,
-Jason
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