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Movement in HVX200 720p60 clips isn’t smooth in 24p timeline w Varicam..WHY?
I am editing a film that is mixing Varicam footage(compressor: DVCPRO HD 720p60 at 23.98fps) with HVX200 footage (the camera was set to 720p24, so same compressor and frame rate as the Varicam). The clips are being edited in a 24fps timeline (so no rendering was needed for clips of either camera).
Why is it then that the movement in the HVX clips don’t look nearly as “smooth” as the Varicam footage? There is a slight “stuttering” in the movement in the clips from the smaller camera. Is this normal for footage from the HVX? And is there something I can do to make motion appear smoother?
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16 Replies
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[editor4yourfilm] “Why is it then that the movement in the HVX clips don’t look nearly as “smooth” as the Varicam footage? There is a slight “stuttering” in the movement in the clips from the smaller camera. Is this normal for footage from the HVX? And is there something I can do to make motion appear smoother?
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This could be due to a number of factors. The first being, did you extract the 24 frames from the 60 that were recorded? In 720/24p the HVX200 actaully shoots 60fps using a 2:3 pulldown.
Another factor is what was the shutter speed on the HVX set at? -
[editor4yourfilm] “the camera was set to 720p24”
is that 720p24 or 720p24N? If it’s 720p24, you have to remove the redundant frames.
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My guess is that the footage with the HVX was shot with the Optical Image Stabalizer engaged. If this function was on, then there really is nothing you can do about it (at least in my experience – if you can solve that, please let me know!).
ONLY use the OIS if the camera is hand held. Under all other circumstances, it should be off.
Good luck.
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We had the cameraman do a test for us: he shot two hand-held pan shots with the HVX200, one in 720p60 and the other in 720p24. In both cases, the clips were imported into the FCP 5.0 project and showed up in the 24p timeline as 720p24 (the compressor on both was of course 720p60).
The shot characteristics between the two clips were exactly the same; ie: slightly choppy movement in contrasty areas when panning.
So if the camera shoots 720p60 when it is actually set to shoot 720p24, does this mean that there is no difference between the two settings as far as output is concerned? (I understand that the only difference is that some 60p frames a “flagged” for 24fps when shooting in 24p.) If true, this would mean, by extension, that FCP did 2:3:3:2 pulldown on both clips, since I had it set in my FCP preferences to do 2:3:3:2 pulldown whnever possible. Please correct me if I am wrong.
Someone else in this thread asked me if the footage was shot in 720p24N (native) as opposed to 720p24. The former, I would assume, would result in smoother movement, since there are no throw-away frames. Am I correct? Had I known that such a setting exists on the HVX200, I would have asked the cameraman to do a test with that as well.
Please let me know if 720p24N is the best option. Thank you.
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As I posted elsewhere in this thread, I had no idea that there was 720p24N (native 24P) capability on this camera…thanks. I suppose this would be the best setting for our 24p project (with Varicam “native” 24p footage). Correct me if I am wrong.
But you mention “throwing away the redundant frames.” How, exactly, do I do that on footage already shot with the 720p24 setting (so therefore actually 720p60)?
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If you are using FCP 5.1.2 or above, there are preference on the p2 import dialog that allow you to remove redundant frames upon import.
If you are using FCP 5.1.1 or below, you have to use the DVCPro HD Frame rate converter.
Jeremy
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Here is a link to the frame rate converter.
https://www.panasonic.com/business/provideo/support/fcphd.asp
-Russ
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Please note that this FRC is only good for FCP 5.0. If you have 5.1, use the FRC that is on the FCP install disks. It is universal.
Jeremy
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The difference is $40,000 worth of camera.
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