I'm evaluating an AJA Io 4k Thunderbolt 2-based interface on an HP Z820 running Windows 7 Professional 64-bit in an effort to possibly replace a Mojo DX that has been working flawlessly. And I am experiencing a couple of surprising limitations.
More specifically, I am seeing 4-7 frames of latency when advancing frame-by-frame through 1080p MXF transcoded footage (not AMA). In other words, the when pressing the right or left arrow keys, the AJA interface updates the image delivered to my external monitor via HD-SDI or HDMI 4-7 frames after the Media Composer GUI screens display the frame advance. There was never any latency with my Mojo DX.
Also, the AJA box seems incapable of playing MXF transcoded video at Full Quality (Green) without a <SFPlayConsumer: Execute TIMEOUT> error. Interestingly, the box has no trouble playing the exact same clips at 10-bit Full Quality (Green +10) and at Draft Quality (Yellow/Green).
While I investigate these (non-starter) problems with AJA, I was wondering if users of the AJA Kona 4 with Media Composer have similar latency and playback problems. I may have to rethink this transition.
Posted by: blafarm@yahoo.com
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