transfer rate less than 1mb/sec?

[Ben Goldenberg]

Dear Redusers?

I have three drives in a software raid for speed and I am rendering my footage
between this raid and a single drive. I hear that normally a transfer rate is 80mb/s on single drives and I am getting less than 1mb/s and occasionally up to 4mb/s according to my mac activity monitor??

This is on an 8core mac with 16 gb ram and NO redrocket.

Is something horribly wrong or am I just misunderstanding?
Thanks all!

 

[jimhare]

If you're transcoding RED footage you are most likely waiting for each frame to Debayer, so doesn't matter how fast your drives are.

With a Red Rocket this becomes realtime so your drive speed will make a difference.

Also depends on how that single drive is connected. SATA (internal) will be much faster than USB or FireWire.

 

[Ben Goldenberg]

So if that is the case - would transcoding on my macbook be slower than on my macpro. I mean one hour of footage is taking 3-4 days to render and my main machine is being wasted if the raid and processors are not being utilized?

Plus, just so I understand. When you say realtime, do you mean that three minutes of footage, with a rocket, will be transcoded in three minutes? Like a three minute raw clip will become a 2k pro res in three minutes?

 

[Martin Weiss]

You really need to get your screen name changed to your real name. See the sticky in the Recon section.

 

[Stephen Strangways]

Yup, with a RED ROCKET, three minutes of footage would take three minutes to transcode.

Without a ROCKET, if you're transcoding to 1080, you are best off setting your 4K Debayer quality to 1/2 Good. Unless you have a lot of high ISO footage, it will look just as good - if not better as it appears sharper - than doing a Full quality debayer, and it will run unbelievably faster.

 

[Ben Goldenberg]

Thanks Stephen,
I'm transcoding 4.5ws to 2k? should is that sill the appropriate setting?

I've tried to change my name to no avail several times btw. I will check the stickies, but it would be a lot easier if in my personal settings there was an option - just saying.

 

[Stephen Strangways]

I don't know - test it out! Render one shot at Full, and one 1/2 good, and compare them side-by-side. If the 1/2 Good is just as good, do it! It can transcode significantly faster - maybe 10x faster it seems in my case, 4KHD to 1080.