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Topic Title: How to record production?
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Created On: 9/21/2014 6:51 PM
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 9/21/2014 6:51 PM
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seewjay

Posts: 35
Joined: 1/9/2014

OS - MacBook Pro 10.9.4
Computer and CPU - 2.3 GHz Intel Core i7, 16 GB 1600 MHz DDR3

I no longer record to the hard drive because of CPU% issues. How can I record the production?

My mac has an HDMI-out, and I'm using 2 ultrastudio mini recorders and the intensity shuttle USB 3.0 for a 3-camera setup.
 9/21/2014 9:29 PM
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eisejm87

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Joined: 7/20/2013

Get some type of recorder like an Atomos, PIX or Hyperdeck.
 9/22/2014 5:34 PM
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CraigS

Posts: 54277
Joined: 4/4/2007

The hard drive doesn't really have impact on CPU. It does on throughput though (dropped frames, etc).
I record to Apple ProRes on an External USB3 or Thunderbolt drive which has very little impact on CPU compared to H.264.

Wirecast can send video using External Monitor Output.

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CraigS
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 9/23/2014 2:07 AM
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seewjay

Posts: 35
Joined: 1/9/2014

I was told to try an external hard drive and the CPU% is staying around 82-86 if I have my office fan pointed at the computer. Seems to be my best bet, but I haven't tried Apple ProRes...what is that?
 9/23/2014 1:56 PM
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CraigS

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CPU above 80% can result in problems. External hard drives have very little impact with overall CPU use.
Apple ProRes is a professional post production codec. H.264 is generally not best for post workflow. It can take significant CPU resources to encode (and decode in post).

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CraigS
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 9/23/2014 4:22 PM
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dpoole

Posts: 336
Joined: 9/8/2008

seewjay, if your Record to Disk setting is different than your streaming setting, that can increase CPU.
If you keep Record to Disk the same as streaming (same codec, settings, etc) CPU should remain stable.
Hope that helps.
 9/23/2014 5:46 PM
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CraigS

Posts: 54277
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Basically streaming and recording are using the same encoder rather than two encoders in that case.

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CraigS
Telestream Desktop Forum Moderator
 9/24/2014 11:18 AM
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flojoemuc

Posts: 7
Joined: 9/24/2014

I use an Atomos Ninja for recording in Apple ProRes. To connect to the Ninja i use a Blackmagic UltraStudio Monitor (via Thunderbolt) what really works well with Wirecast.

To minimize the CPU usage i "outsourced" the streaming functionality to a Terradek Vidiu (by the way some of the ways to stream to the new Livestream.com, what is not possible with wirecast itself). So thunderbolt out to UltraStudio Monitor, record with Ninja in HD ProRes, loop HDMI throght Ninja and input HDMI into Vidiu.

CPU Usage with a MacBook Pro i7, 2.6Ghz, 16GB RAM > 23%

I did a kind of burn in test with the new Livestream with this setup. The test was 8 hours of livestream without ANY problems.

Hope this helps!
Florian
 9/24/2014 7:19 PM
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CraigS

Posts: 54277
Joined: 4/4/2007

Interesting that New Livestream supports the Vidiu. Some have theorized that their red Broadcaster box is an OEM Vidiu.

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CraigS
Telestream Desktop Forum Moderator

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