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Old 11th March 2014, 13:02
enten enten is offline
Junior Member
Join Date: Jun 2010
Posts: 6
Default Reply to Victor

Although the Forum has not posted it, I received an email saying that Victor_S_ has replied to this thread. I'll repeat it here:

Victor_S_ wrote: I'm not sure I understand. I use HDMI as the video source in Producer and a completely separate audio feed from the building sound system for audio. Why do you need to pass the audio through the BM H.264 Pro?

I'm using a Black Magic Intensity Pro card and not an H.264 Pro, but the sound mixer in Producer can accept a bunch of different inputs - I'm using USB from a physical mixer.

Victor... I'm broadcasting from a laptop... so I cannot insert a Black Magic card into the computer. Therefore, the Black Magic H.264 Pro Recorder usb device is the only way to get HDMI input into the computer. The issue is that doing so introduces a delay of about a second or so; therefore, I cannot use audio directly into the computer (which I would prefer) because the audio and video are then severely out of sync for the broadcast. As the H.264 Pro Recorder will *not* send separate audio feed along with an HDMI video feed, the only way to sync up is to get the audio in on the HDMI channel, so I have to route it through the camera, and that is problematic for us currently do to noise on the line (and a likely DC offset issue).

I hope that helps you understand the question....

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