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real-time capabilities of ioHD
I am using my new ioHD for the first time on an HD project. My first task is to make TC window dubs of our Xdcam 1080p media to standard def DVDs. I transcoded the xdcam material to ProRes and added the time code reader filter to it in Final cut pro and I get an orange render bar. I still get “correct” playback to both HD and SD monitors, but the image is noticeably soft and stutters briefly from time to time. My question is whether I have already met the limits of the ioHD on real-time output by adding one simple filter? With SD media, I’m used to getting the grey-green render bar and not having to render at all and still get a pristine image on output. Window dubs wouldn’t normally require that the image look perfect. However, clients will see the footage for the first time with these window dubs and that makes the producer nervous. The ioHD has been touted for its real-time capabilities with the ProRes codec. I’m a little disappointed. Can anyone advise?
My system: Macbook Pro running at 2.6 Ghz core 2 duo, 4 GB RAM, Sonnet Fusion D-500P RAID-0 storage in combination with a Sonnet eSATA II expresscard port-multiplied host adapter. No other firewire devices connected and realtime extreme is turned on in FCP. I have used the 8-bit ProRes codec, not the 10-bit, for transcoding the xdcam media.
Let me also note that when I transcoded the xdcam to ProRes 720p and then added the time code reader filter, I got a green render bar and much better playback, smooth and sharp. When I read AJA’s recommended systems for editing HD ProRes media, I saw my system in that list with no qualification about 1080 media versus 720.
Thanks in advance for anyone’s input on this subject.
Richard Fomo