Overcrank Double Sound Recorded?!? at DVinfo.net

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Old September 8th, 2010, 03:39 AM   #1
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Overcrank Double Sound Recorded?!?

Hello,

Just testing a NanoFlash that I have rented in for a shoot.

EX3 720 50p

Latest firmware on both.

NanoFlash is in i frame 220mbs. Crank menu is 25 on the left, and 50 on the right.

When I play back in Quicktime it looks like the clips are indeed at 50fps. I am confused by the audio that is recorded and playing back. At first glance it seems like the audio is just playing back at 25fps. But I am very confused by the audio repeating itself. In other words, doubling up.

Playing FPS are 25.

I will be safety recording to the SxS cards, but it would be nice to know whats happening.

Thanks,

Ben
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Old September 8th, 2010, 04:16 AM   #2
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Dont think you get use able audio in over crank.. on any camera..
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Old September 8th, 2010, 04:25 AM   #3
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Thats why I am confused. Why is there audio there at all?
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Old September 8th, 2010, 04:46 AM   #4
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There is some info on audio in this thread http://www.dvinfo.net/forum/converge...-pal-land.html Post 13 says "We have not disabled the audio during over and under-cranking"

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Old September 8th, 2010, 04:47 AM   #5
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Ben,


The same here. I never understood why the audio is recorded at all, and how come it repeats itself?
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Old September 8th, 2010, 04:58 AM   #6
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Glad I am not the only one!

I will relax a little about my shoot tomorrow. Thanks everyone!
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Old September 8th, 2010, 06:05 AM   #7
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I guess its double as double the frame rate? but anyway as your not going to use it I wouldnt lose any sleep over it.. as long as the image is ok..
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Old September 8th, 2010, 06:24 AM   #8
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You're right, not a big deal to worry about - I just delete the audio track anyway, but it simply is a mystery to me: is the audio repeated "on purpose" (i.e. the nanoFlash firmware has been designed this way), or is it an unintentional effect?
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Old September 8th, 2010, 07:29 PM   #9
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Dear Friends,

We have not disabled the audio during over and under-cranking.

However, we have in our manual a note that the audio is not usable in this over and under-cranking mode.

I believe that this is typical of most cameras.

We just did not disable the audio.
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Old September 8th, 2010, 10:49 PM   #10
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For my self, having the EX-3 doesn't makes sense using the NANO's overcranking.
Shoot full p50 and Conform to p25 the stuff that you need slow down.
You will have the full original sound too.
rafael
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