Aaron Holmes |
November 25th, 2010 01:04 PM |
Hi, Gabroo:
You may have this figured out by now, but the resolution and framerate (e.g., 720p60, 1080p24, etc.) don't really figure in how much video you can fit on the disc. It all comes down to the data rate. On your memory card (or FMU, if you have that on your NX5), 720p60 in FX mode will take up the same amount of space for any given period of time as 1080p24 in FX mode will; "FX" is Sony shorthand for 24Mbit/s peak.
Also, as Perrone rightly pointed out, shooting at a given data rate really has nothing to do with the data rate on the disc. Not necessarily, anyway. Frequently, you'll want to (or have to) adjust the data rate of your project to make it fit on the disc or else to minimize the effects of recompression.
Most of my Blu-ray programs (home videos) are an hour or less in length, meaning that I can take the 720p60 FX-mode sources from my NX5 and recompress my project at a much higher rate of 35Mbit/s and it will still fit easily on a one-sided Blu-ray. This is nice, because in general, recompression (implicit in most NLEs) is a damaging process, and boosting the data rate to the maximum that will fit on the target media often minimizes the appearance of new compression artifacts.
Enjoy the NX5! Great cam, IMO.
Best,
Aaron
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