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Re: hmc150, final cut express 4 and 2.8GHz (intel duo core)iMac

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Masud Haq
Re: hmc150, final cut express 4 and 2.8GHz (intel duo core)iMac
on Dec 20, 2008 at 8:45:42 pm

I have upgraded to Final Cut Studio 2 and upgraded to the latest versions online (FCP 6.0.5, etc.). I tested all the PH modes (except 1080i60). They all work quite well including the 24p modes.

I am transcoding to Apple ProRes 422. I don't see any option to transcode to ProRes HQ - can others validate this?

When the clips are transcoded to ProRes 422 through the Log & Transfer window of FCP, my data rate is still not great:
- For 720p60 and 1080p30 I get 17 MB/sec
- For 1080p24 I get about 14MB/sec
- For 720p30 I get about 9MB/sec
- For 720p24 I get about 7MB/sec

These clips were all recorded in PH mode so the original data rate for all of the above clips are around 21MB/sec. I am not getting the advantage of these high data rates when transcoded to ProRes. The original AVCHD looks really good when I plug the camera to an HDTV with an HDMI cable, but looking at the transcoded clip on QuickTime, I can see the difference in quality. Particularly disappointing are the data rates for the 24p modes.

Any ideas anyone? Am I not setting something correctly?

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