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Best device for quality?

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Kent Beeson
Best device for quality?
on Jul 12, 2011 at 7:57:23 pm

I want to shoot best quality especially for some ultra slomo (using MOTION Optical Flow in post) and thought either the ATOMOS Samurai ( The Samurai - HDMI ProRes HD/SD-SDI Recorder ) or this BM device would help to that end - Blackmagic Design: HyperDeck Shuttle Tech Specs

Which is best for shooting with the EX1R and would I have to compress the footage to Pro res before editing in FCP 7 if I shot using the Black Magic device? Is it true the higher the bit rate (100-220 or so) will make ultra slomo far easier/cleaner/better than if just shot at EX1R's normal bit rate?

Thanks

K
http://www.effectivevideo.net


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Craig Seeman
Re: Best device for quality?
on Jul 13, 2011 at 10:51:48 pm

One issue with the Blackmagic device is the very large uncompressed files result in very short record times for very expensive SSD drives.

Shooting ProRes at 720p60 could work. Some might say Convergent Design NanoFlash shooting a high data rate MPEG2 (even I frame) would be good as well.



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Kent Beeson
Re: Best device for quality?
on Jul 13, 2011 at 11:26:44 pm

Thanks for help - wonder if nanoflash with my EX1R at 220mbps 720p 60fps would be a great way to go? What is Iframe, better results than mpeg(?) especially for slomo and does it go to nanoflash that way, easy to edit on a pro res timeline in FCP 7?

Thanks

K
http://www.effectivevideo.net


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Michael Palmer
Re: Best device for quality?
on Jul 13, 2011 at 11:38:59 pm

Mpeg-2 can imploy either Intra-frame or Inter-frame compression types @100 Mbps, anything below this bite rate is inter-frame or Long GOP.
I-frame or Intra-Frame retains all the information needed to recall or reproduce that one frame, Inter-frame relies on looking at frame information both forward and inverse of a given frame to reproduce it.

Good Luck
Michael Palmer


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Kent Beeson
Re: Best device for quality?
on Jul 13, 2011 at 11:47:31 pm

Thanks for clarification - I suppose then nanoflash I-frame at 220 mbps is best way to go...

Thanks

K
http://www.effectivevideo.net


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Michael Palmer
Re: Best device for quality?
on Jul 14, 2011 at 12:22:36 am

If you're going to use some software to interpolate or recreate more frames than you can record from the camera then yes a higher bite rate during acquisition would IMHO be best. Just know you will need CF media that is rated to record 220Mbps. Please let us know how it turns out as this is an area I haven't had much experience in. I have Twixtor for FCP but never really mastered it.

Good Luck
Michael Palmer


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Kent Beeson
Re: Best device for quality?
on Jul 14, 2011 at 12:27:27 am

Woah, good point - the cards I have at the moment are SxS and SxS-1, Transcend 6 and 10 class - wonder if they'll work in nanoflash at 220mbps? Also, don't have Twixter, do have Motion's Optical flow.

Thanks

K
http://www.effectivevideo.net


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Michael Palmer
Re: Best device for quality?
on Jul 14, 2011 at 2:28:01 am

The Nano Flash only records to Compact Flash cards. I have a few Photo Fast G-Monster 533x cards for higher bite rate project. Not sure if there if ever be an SD card that will write fast enough for 220 Mbps.

Good Luck
Michael Palmer


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Kent Beeson
Re: Best device for quality?
on Jul 14, 2011 at 10:53:43 pm

Thanks for helpful replies - so I might be able to rent the AJA Ki Pro mini - wonder if anyone knows about using this with SONY EX1R and can I use my class 6 and 10 Transcend cards in it for 220Mbps?

Thanks

K
http://www.effectivevideo.net


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Don Greening
Re: Best device for quality?
on Jul 15, 2011 at 3:21:31 am

You can only use compact flash (CF) cards with the Ki Pro Mini and only 4 types of CF cards are qualified by AJA:

Hoodman UDMA RAW Compact Flash 32GB 675x

SanDisk Extreme Pro CompactFlash 32GB

SanDisk Extreme Pro CompactFlash 64GB

Delkin CombatFlash 625x 32GB

Using ProRes standard you'll get 50 minutes of record time on a 64G CF card. 220Mbits/sec is ProRes HQ and you get 33 min. record on a 64G.

Unless you're shooting green screen or need to do heavy colour correction regular ProRes is more than adequate.

- Don

Don Greening
A Vancouver Video Production Company
Reeltime Videoworks
http://www.reeltimevideoworks.com


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Kent Beeson
Re: Best device for quality?
on Jul 15, 2011 at 3:50:27 am

Great, thanks for details - probably at 220MBps ultra slo mo (in post) would have a better chance I'd think, therefore shooting in Pro Res HQ would be necessary for me.

Thanks

K
http://www.effectivevideo.net


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