> If I'm using a firewire cable to control the XL-1 (or any other
device) via MOJO, will/would that digital connection override any
analog connections? If the answer to that is "yes," then wouldn't I
sacrifice time-code data if I pull the firewire (video) connection and
substitute an analog (RCA or S-video) connection?
I answer:
You should never use Firewire on the same FW buss as your MOJO. MOJO
want to occupy the entire FW bandwidth. And since your first-gen MOJO
has no digital inputs anyway, you must use analog audio and video
going into the MOJO for capture. This means of course that you will
have no TC over FW because you can't use FW for anything else while
the MOJO is in use on that same FW buss.
If you need FW control of your camera/deck, disconnect the MOJO from
FW and do your capture directly through the FW port. This way, you'll
have a digital connection of audio & video, your deck can be
controlled, and you'll have timecode from the camera/deck. This will
also guarantee that the audio, video, and TC will be in sync because
they will all be coming over the same path (the FW port).
Unfortunately, this will mean that your 12-bit audio will not be
accepted by Avid, so you'll need to set that 'convert-bit-rate-while-
capturing' setting ON. To avoid this in the future, it's best to
always use 16-bit audio source material whenever possible.
After you've finished capturing, you may reconnect the MOJO to the FW
port and use it to monitor the Avid edit output on a TV monitor and
external speakers. They will be in sync with each other, again
because they are all coming through the same path (FW through MOJO).
Dennis Degan, Video Editor-Consultant-Knowledge Bank
NBC Today Show, New York
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