Wed Apr 29, 2015 7:04 pm
Devin, I do believe you should only use matching cards from one vendor with matching firmware regardless of what BMD or anyone says they are able to achieve mixing cards. Sorry, if that sounds harsh, it's just to minimize losing footage by reducing all risk. Some RAIDs can accept different storage devices too, but I'd always use matched drives there anyway for the same reason.
Recording simultaneously to the two cards (interleaving DNG frames and duplicating the audio file on both cards) does virtually double the bandwidth of the recording system. As was pointed out in an interview at NAB 2015, it's a great way to have insurance you have your footage safe, because in the event something horrible happened with the footage on one card, you do have half the frames on another card and you could use optical flow to recreate your missing frames in the video far easier than reshooting everything you lost.
Would be a very interesting test for someone to do this intentionally: do a 60 fps video with dual recording, import one card only, use optical flow or some other software to replace the missing frames, and see if it's virtually as good as the proper video using two cards input.
Rick Lang
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Last edited by
rick.lang on Thu Apr 30, 2015 3:58 am, edited 1 time in total.
Rick Lang