SSD recording with Blackmagic hyperdeck

Paul Kapp · July 6th, 2012, 06:40 PM

Avid DNxHD compression is about 1/6 of uncompressed.
But is called lossless because it is so close to uncompressed in picture quality.
Many cameras have recording in higher ratios of onboard compression with lower quality.
That is what the Shuttle is for, higher quality with lower(or no) compression using HD SDI or HDMI output from the camera head.

Kent Nguyen · July 6th, 2012, 07:26 PM

Thanks Paul
Does that mean if we record in DNxHD we can have 6x longer for the same space that to record in uncompressed? and how to do that with Shuttle deck 2?

Paul Kapp · July 8th, 2012, 08:19 AM

Yes, 6x longer.
You need to use a software utility called Black Magic Hyperdeck Utility to change settings on the Shuttle 2 to the desired format, DNxHD, ProRes or Uncompressed.
You can also set record trigger to SDI timecode or SDI start/stop(or never).
This is done over a usb connection.

Kent Nguyen · July 9th, 2012, 09:56 AM

Wow great, how come I did see these modes with Utility 2. Will check it over again . Does the DNxHD give good compression with 4:2:2 color sampling?
Thanks Paul.

Paul Kapp · July 10th, 2012, 08:04 AM

Yes.
10bit 4:2:2
It is termed a lossless codec because it is so close in quality to uncompressed.

Ron Aerts · July 12th, 2012, 12:50 AM

Quote:

Originally Posted by Paul Kapp

You can also set record trigger to SDI timecode or SDI start/stop(or never).
This is done over a usb connection.

However the sdi start stop function is not working with an F3 camera

Paul Kapp · July 12th, 2012, 01:34 AM

Damn!
Crash record then.

Kent Nguyen · July 26th, 2012, 11:20 AM

Yeah the start/stop function doesn't work with my EX1 either. I tried to record DNxHD Quicktime (from 1080 sp) and my 240gbs SSD got full at 2hrs18minutes

Now I am trying it with DNxHD alone (From SD) to see if it can get any longer

Paul Kapp · July 26th, 2012, 05:52 PM

2hrs 18 minutes is pretty good.
I think it is better to leave 20% or 15 minutes free on the ssd though.
I have encountered severe frame dropping on a HyperX 120Gb SSD when it was nearly full.
As an SSD fills up it gets to a point where the write speed decreases.

This kind of media is quite cheap when compared with Sony or Panasonic memory or even compact flash cards.
It is about the same as what I paid for DVCPro tapes many years ago.
And they're getting cheaper.

July 6th, 2012, 06:40 PM	#16
Paul Kapp Regular Crew Join Date: Jul 2011 Location: Sydney Australia Posts: 111	Re: SSD recording with Blackmagic hyperdeck Avid DNxHD compression is about 1/6 of uncompressed. But is called lossless because it is so close to uncompressed in picture quality. Many cameras have recording in higher ratios of onboard compression with lower quality. That is what the Shuttle is for, higher quality with lower(or no) compression using HD SDI or HDMI output from the camera head.

July 6th, 2012, 07:26 PM	#17
Kent Nguyen Regular Crew Join Date: Dec 2009 Location: Atlanta, USA Posts: 53	Re: SSD recording with Blackmagic hyperdeck Thanks Paul Does that mean if we record in DNxHD we can have 6x longer for the same space that to record in uncompressed? and how to do that with Shuttle deck 2?

July 8th, 2012, 08:19 AM	#18
Paul Kapp Regular Crew Join Date: Jul 2011 Location: Sydney Australia Posts: 111	Re: SSD recording with Blackmagic hyperdeck Yes, 6x longer. You need to use a software utility called Black Magic Hyperdeck Utility to change settings on the Shuttle 2 to the desired format, DNxHD, ProRes or Uncompressed. You can also set record trigger to SDI timecode or SDI start/stop(or never). This is done over a usb connection.

July 9th, 2012, 09:56 AM	#19
Kent Nguyen Regular Crew Join Date: Dec 2009 Location: Atlanta, USA Posts: 53	Re: SSD recording with Blackmagic hyperdeck Wow great, how come I did see these modes with Utility 2. Will check it over again . Does the DNxHD give good compression with 4:2:2 color sampling? Thanks Paul.

July 10th, 2012, 08:04 AM	#20
Paul Kapp Regular Crew Join Date: Jul 2011 Location: Sydney Australia Posts: 111	Re: SSD recording with Blackmagic hyperdeck Yes. 10bit 4:2:2 It is termed a lossless codec because it is so close in quality to uncompressed.

July 12th, 2012, 01:34 AM	#22
Paul Kapp Regular Crew Join Date: Jul 2011 Location: Sydney Australia Posts: 111	Re: SSD recording with Blackmagic hyperdeck Damn! Crash record then.

July 26th, 2012, 11:20 AM	#23
Kent Nguyen Regular Crew Join Date: Dec 2009 Location: Atlanta, USA Posts: 53	Re: SSD recording with Blackmagic hyperdeck Yeah the start/stop function doesn't work with my EX1 either. I tried to record DNxHD Quicktime (from 1080 sp) and my 240gbs SSD got full at 2hrs18minutes Now I am trying it with DNxHD alone (From SD) to see if it can get any longer

July 26th, 2012, 05:52 PM	#24
Paul Kapp Regular Crew Join Date: Jul 2011 Location: Sydney Australia Posts: 111	Re: SSD recording with Blackmagic hyperdeck 2hrs 18 minutes is pretty good. I think it is better to leave 20% or 15 minutes free on the ssd though. I have encountered severe frame dropping on a HyperX 120Gb SSD when it was nearly full. As an SSD fills up it gets to a point where the write speed decreases. This kind of media is quite cheap when compared with Sony or Panasonic memory or even compact flash cards. It is about the same as what I paid for DVCPro tapes many years ago. And they're getting cheaper.