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Audio in SloMo

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Blub
Audio in SloMo
by
on Dec 10, 2005 at 6:15:27 pm

When you record at a frame rate other then 30 or 24 does the camera record audio at that frame rate?

I will never forget when I first did a fit to fill in FCP, I had 8 or so years of Avid cutting behind me and when I did the FCP fit to fill the audio was changed to reflect the slower speed of the video!! So cool! Of course Avid does not do that, I was surprised!

So, does this camera do this, record audio at the same frame rate as you choose outside of 30fps or 24fps?

Chris


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Graeme Nattress
Re: Audio in SloMo
on Dec 10, 2005 at 6:18:36 pm

I don't get you. Audio doesn't have a frame rate....

Graeme

- http://www.nattress.com - Film Effects and Standards Conversion for FCP


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Blub
Re: Audio in SloMo
by
on Dec 10, 2005 at 11:45:52 pm

Will the camera shoot both video and audio at variable frame rates (video) in such a way that when playing back at the recorded frame rate they are still in sync with each other and sound natural?

I am not sure how to put the question because, as you say audio does not record in intervals of frames. I could ask the question in a verbose way but, I think I will try to save everyone the pain of reading it.

Chris


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Graeme Nattress
Re: Audio in SloMo
on Dec 11, 2005 at 12:07:52 am

At any frame rate, the audio is recorded at the same speed, hence, if you record 24p and playback 24p, the audio sounds normal. Similarly, record 30p and play back 30p, the audio sounds normal. Record 60p but play back 24p, the audio will be slow.

Graeme

- http://www.nattress.com - Film Effects and Standards Conversion for FCP


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Blub
Re: Audio in SloMo
by
on Dec 11, 2005 at 6:41:54 am

Today is an odd day, people simply don


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I. Friedman
Re: Audio in SloMo
on Dec 12, 2005 at 8:53:31 am

The answer to your question is...

With the HVX you can record sound at ANY of the variable frame rates. However, you will ONLY hear the sound played back when you playback the captured video at THE SAME variable rate. For example, if you shoot at 32fps, you will not hear the sound when you play back at any frame rate other than 32fps. I tested this last week during our shoot. We were all a little concerned about this because the manual isn't particularly clear about that feature.

Illya Friedman




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Barry Green
Re: Audio in SloMo
on Dec 12, 2005 at 9:44:30 am

Sound is recorded in a separate file in a separate folder on the card, called "audio". Real-time sound is captured. If you play back the clip at a different timebase (i.e., a slow-mo clip) then the audio is ignored. However, that audio is still available on the card and you can bring it in and manipulate it however you want to.

(note: this answer is 95% certain, but not 100% certain)

-----------------
Get the most from your DVX camera. The DVX Book and DVX DVD are now available at http://www.dvxuser.com/articles/dvxbook/ and at Amazon (http://www.fiftv.com/db)


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Blub
Re: Audio in SloMo
by
on Dec 13, 2005 at 4:31:07 am

Sounds good to me, thanks

Chris


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JeremyG
Re: Audio in SloMo
on Dec 11, 2005 at 5:00:20 am

I'm not sure if this is true with the HVX, but when you use the frame rate converter plug in to convert the footage from a varicam, you lose the audio. Don't know if the HVX will behave in the same way.


Jeremy

-----------
G5 Dual 2Ghz <> 4GB RAM <> FCP 5.02 <> Kona 2
ATTO 42XS <> Huge Systems 4105 Fibre


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