Digital Processing Facts

2:02 pm Non-Linear, Process, Tips

time.jpgNow that you’ve decided to do your editing, it would be nice to know a little of the facts so you get the overall picture in terms of Video processing and the required space you need on your hard drive. Digital Video runs at a bitrates of around 3.5 megabytes per second so your input feed requires:

2 hours * 3600seconds/hour * 3.5 megabytes per second = more or less 25 Gigabytes.

You would also need to store your final MPEG-2 files on your hard disk before you burn them onto DVD’s and DVD’s typically have a 4.5 Megabit/sec bit rate for video and 0.4 Megabits/sec which sums up to :

4.5 Mbit/sec + 0.5 Mbit/sec = 5 Mbit/sec translating to 0.625 Mbytes/sec
2*3600*0.625= 4.5 Gigabytes

So 30 Gigabytes of hard disk space is needed for editing two hours of Digital Video and the subsequent DVD burning process and that is a lot.

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