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Multi-machine Capture System - TreetWiki

Multi-machine Capture System

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(Wirecast Configuration)
(Possibly cheaper alternative)
Install the required items. The BMD card(s) can go in any slot, as far as I know ''except'', according to some authorities, #3. You will have a graphics card in one of the slots, so that means you can have two cameras coming into this system via BMD cards. If you want to add any more, they'll have to come in via Firewire capture devices (for example). I have only tested this system with one BMD card. Once you have installed SoundFlower, look in its folder and you will see another app called SoundFlowerbed. Run this and also add it to your Login Items. Check that you see the little flower in the menu bar top right.
Install the required items. The BMD card(s) can go in any slot, as far as I know ''except'', according to some authorities, #3. You will have a graphics card in one of the slots, so that means you can have two cameras coming into this system via BMD cards. If you want to add any more, they'll have to come in via Firewire capture devices (for example). I have only tested this system with one BMD card. Once you have installed SoundFlower, look in its folder and you will see another app called SoundFlowerbed. Run this and also add it to your Login Items. Check that you see the little flower in the menu bar top right.
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=== Possibly cheaper alternative ===
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=== Possibly cheaper, certainly higher quality alternative ===
Wirecast is relatively expensive ($450US). You can download the trial version and see if it's for you, before you shell out. If you decide it's too much, you can do the following simply with a single BMD card. Capture video at 720p60 or 720p50 (see below) using either:
Wirecast is relatively expensive ($450US). You can download the trial version and see if it's for you, before you shell out. If you decide it's too much, you can do the following simply with a single BMD card. Capture video at 720p60 or 720p50 (see below) using either:
* MediaExpress (which comes with the BMD cards) to capture ProRes 422 and capture the audio another way (trickier than it sounds: er, how about you route the incoming Skype audio to the line out of the Mac and patch that into the analogue audio input jacks on the BMD card's breakout cable…); or
* MediaExpress (which comes with the BMD cards) to capture ProRes 422 and capture the audio another way (trickier than it sounds: er, how about you route the incoming Skype audio to the line out of the Mac and patch that into the analogue audio input jacks on the BMD card's breakout cable…); or
I say "possibly cheaper" because you now need a seriously fast hard drive if you don't have one already. And you can't do as much as you can with the system described. But…
I say "possibly cheaper" because you now need a seriously fast hard drive if you don't have one already. And you can't do as much as you can with the system described. But…
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The big advantage of the simpler systems described above is that they are more reliable. The problem with Wirecast is that it is rather sloppy in some ways: specifically, the files it produces have rather a lot of dropped frames. These have to be fixed by running them through Compressor with the same settings as they came in with so it can clean them up.
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On the other hand, if you capture with the two methods described above there are no dropped frames (in fact you can have Media Express stop if there are any!) - but you still require a Compressor session to change the frame rate and in the meantime the amount of disc space you eat up is enormous and you need a respectably fast system to cope with it. Plus the audio side suddenly becomes a lot more complex.
=== BMD Card Preferences ===
=== BMD Card Preferences ===

Revision as of 21:40, 24 July 2011

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