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Sony HVR-A1 and HDR-HC Series
Sony's latest single-CMOS additions to their HDV camcorder line.


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Old February 28th, 2006, 09:36 AM   #1
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hc3 slow motion clip

...is here

http://www.megaupload.com/?d=HUUUIT4Z
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Old February 28th, 2006, 10:46 AM   #2
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QuickTime can't open this file?
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Old February 28th, 2006, 11:58 AM   #3
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Impressive, for the price.

I'd like to see a close up slomo if there are any.
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Old February 28th, 2006, 12:57 PM   #4
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I just took that clip into AE and sped it up, it looks like it's been slowed to exactly 50%. My guess is all they are doing is taking the interlaced image and doubling up the fields as it's recorded to tape - it'll be interesting to see something at full res and see if there is a vertical resolution drop in this mode.
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Old February 28th, 2006, 02:43 PM   #5
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The clip is actually 4x slower. It is a 12 sec segment (30fps) from a 3sec (120fps) segment. You may notice a drastic decrease in resolution; there's been a lot of talk as to why that is on the following link:

http://www.sonyhdvinfo.com/showthrea...0&page=1&pp=10
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Old March 1st, 2006, 01:23 PM   #6
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Quote:
Originally Posted by Alexander Karol
The clip is actually 4x slower. It is a 12 sec segment (30fps) from a 3sec (120fps) segment.
I understand it's supposed to be 4x slower but it clearly isn't and you can test it yourself - take it into any video program and run it at 2x and 4x speed. At 2x it looks like almost natural motion, at 4x it's clearly much faster than real motion. Either the camera isn't really doing a 4x slowdown or that particular clip has been changed after the camera was done with it.
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Old March 3rd, 2006, 08:28 PM   #7
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Can the HC1 or the A1U do this?
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Old March 4th, 2006, 04:27 PM   #8
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Old March 5th, 2006, 09:28 AM   #9
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Quote:
Originally Posted by Derek Lewis
Can the HC1 or the A1U do this?
No, certainly not.

By the way, HC3 lacks zoom ring but the tripod mount is on the bottom of the chasis (I think). When I damaged the door of the A1's tape load mech by mounting A1 on my bike, HC3 might be better to mount....but then HDV would not withstand the vibration anyway....
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Old March 6th, 2006, 09:53 AM   #10
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here's another one - looks alittle better.

http://www.watch.impress.co.jp/av/do...301/ezsm03.mpg
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Old March 6th, 2006, 08:37 PM   #11
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Motion looks great. The clarity looks low. Did they use any built-in RAM scheme to achive this effect? Sony's product site does not even mention this slo-mo effect much.
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Old March 6th, 2006, 09:43 PM   #12
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Quote:
Originally Posted by Kurth Bousman
here's another one - looks alittle better.

http://www.watch.impress.co.jp/av/do...301/ezsm03.mpg
Kurth
Now that one actually looks like it is a 4x slowdown - I think the previous clip must have been changed when it was compressed for the web. The new clip looks pretty soft though, considering it's 5Mbit MPEG2 at about standard definition - it looks like it's actually lower than standard def.
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Old March 9th, 2006, 12:48 AM   #13
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Quote:
Originally Posted by Derek Lewis
Can the HC1 or the A1U do this?
Well, not in camera.

But I have gotten identical results from an HC1 by separating fields, applying the SmoothDeinterlace filter for Virtualdub to yield 60fps progressive, then slowing that down.
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