C100: C100 Atomos Ninja Blade Audio Delay?

puredrifting

puredrifting

Major Contributor
Hi all:

Just setting up my new C100 with the Atomos Ninja Blade. I have looked all over the web, the Atomos website, the manual and I cannot find any detail or suggestions about audio delay when using the C100 with the Blade? Are any of you using any audio delay when recording with the C100 and the Blade with an 18" HDMI cable? Seems strange that the feature is there, yet I can't find any recommendations on if this setup needs an audio delay. Thanks for any suggestions.
 
No need to use the delay function on the Blade with the C100. The cable length shouldn't be a factor - the pics and audio are all part of a single digital stream. Just make sure you monitor audio directly from the C100 headphone output, or the delay between what's leaking in from outside your headphones and the processed HDMI output might be a tad distracting.

I'm not sure why Atomos added it - perhaps to compensate for the audio delay in live streaming switchers? I know the ATEM switchers have a couple of frames audio latency - maybe it was added for those kind of scenarios.

Ben.
 
Thanks Ben. From what I have read, the 5D MKIII requires up to 7-8 frames delay to keep the audio in sync. Good to hear that the C100 doesn't seem to need that delay. Perhaps it's for the analog audio input on the Blade? I also heard that the HDMI in the 5D MKIII doesn't have enough bandwidth to carry both video and audio signal so you have to use the analog output from the 5D MKIII to the analog input on the Blade? I have never tried it but I see posts alluding to it.
 
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Thanks. I didn't know that - it would make sense, if the audio is coming in via the analogue input.

Cheers,

Ben.
 
puredrifting said:
Thanks Ben. From what I have read, the 5D MKIII requires up to 7-8 frames delay to keep the audio in sync. Good to hear that the C100 doesn't seem to need that delay. Perhaps it's for the analog audio input on the Blade? I also heard that the HDMI in the 5D MKIII doesn't have enough bandwidth to carry both video and audio signal so you have to use the analog output from the 5D MKIII to the analog input on the Blade? I have never tried it but I see posts alluding to it.
Click to expand...

5D Mark III and 1D C have 4 frames of delay (about 250ms)
 
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