2 & 4 channel audio?
My company just bought 2 350's with Cannon KH10ex3.6 glass for documentary production.
We do all of our shooting in HD (HQ) res. We noticed that you can only record 4 channels of audio in 60i mode. We switched to 30p mode to run some tests and had no audio at all until we changed the number of channel inputs to 2. Are we doing something wrong? Or is this just the way it is? Just thought I'd pass this along as it was somewhat frustrating to figure out why the mic wasn't working. Matt Trecartin Director / DOP Arcadia Entertainment Inc. www.arcadiatv.com www.marinemachines.com |
Something doesn't sound right. I can't tell exactly from your description exactly what was happening.
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You can, however, mix 60i and 30P on the same disc, but the number of audio channels must remain constant. Other than that, check your input switches for ch1 and ch2 to make sure they are set for front if using the front mic connector. -gb- |
yeah sorry, I wasn't very clear.
We can of course record either 2 or 4 channels of audio in 60i mode. Our problem was that we were not getting any audio levels when we were in 30p mode (with a fresh disk) having the camera set to 4 channel audio. The only way I was able to get audio levels to apper in 30p mode was to change the setting to 2 channel audio. Does the 4 channel audio record function only work in 60i? |
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I'll try to duplicate what you are talking about. Just to be clear, were you wanting the front mic as your audio source when all this was happening? -gb- |
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Thierry. |
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Thierry. |
I dont own a XDCAM HD (yet), but manual says
(SPECS) AUDIO: MPEG HD: 16/24 Bits, 48 KHz, 4/2 channels DVCAM: 16 bits 48Khz 4 Channels It looks like you have to switch the res to 16bit in the menu to have access to 4 channels instead 24bits/2 channel. Have a try. Regards ULI |
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The problem yesterday was that I wasn't getting any audio at all from my front camera mic when I was in 30p mode, until I switched to 60i mode and from 4 the 2 channel. I had all the monitor and input settings right because when I switched it I could see the levels appear in my viewfinder and hear the audio from the monitor. Anyway, I have audio now in 30p mode so thanks for all the comments. I don't really ever need 4 channels anyway. BTW, why is there 4 channels of audio and only 3 inputs? |
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If you are ever going to record a music event or a speech thru a soundsystem, 4 channels are a great help.
a) feed the mixing board into one or (stereo) two channels b) feed the onboard mic or external mics to ch. 3-4 for atmo and applause etc. In Post I always move the applause track a bit since the audio took some meters to travel - so its out of phase or even delayed. At the moment I realize that with an EDIROL R4 4track recorder - when changing to xdcam hd I probably will use the f350 for that. Regards ULI |
I was talking to my Online facility today and they said 24bit audio is a waste of space since they work in 16bit anyway.
Looks like I will be running 4 channel all the time. |
Hey Nate, any idea where you get one of those made? The ability to run three wireless mics off the camera would be great. I guess that would mean replacing the XDCAM HDs standard onboard microphone as well with something that plugs into a three pin XLR (mono) connection?
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-gb- |
OH, so I can't switch back and forth between 2 and 4 channel on the same disk. Gotcha.
It would be intetresting to know if this 24b myth is just a typo or some creative marketing... |
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