Videomaker – Learn video production and editing, camera reviews › Forums › General › Video and Film Discussion › Advanced Info › Norman, Concerning the spe
Concerning the specifics of what the Mk II via it’s HDMI out goes, until I can get my hands on a demo model to test or buy one I can’t say one way or the other. If I can find out what production co mentioned in the video on the ‘5k’ thread was I’m sure they would have a wealth of knowledge to pass on. I’ll have to get back to you on that.
Meantime, the real advantages of uncompressed video lies in it ability to be resized with minimal losses of resolution. That is because there is more image data available than in a compressed video stream. It all depends on what you plan on doing with the final product. If you’re going for theatrical release you want the most detailed (uncompressed) data stream possible whether it’s for a 35mm or greater transfer to film or a straight digital projection copy. The image will have to hold up when projected onto a large screen in full detail. The higher your data rate (i.e. 1k – 6k) the more successful you’ll be at maintaining the image at large projection sizes. Uncompressed video is also important for the compositing process. The more data available in the image the more ‘room to work with’ you’ll have when creating your VFX.
Now if you’re goal is broadcast you’ve got similar goals in maintaining a detailed data stream. Now that HD is the current thing, audiences expect to see rich, vibrant and detailed footage on their HD sets. As a broadcast content provider, you want that signal to look just as good on a 70″ plasma/LCD, an ungodly sized video wall, projector or the typical family flatscreen. Uncompressed will get that for you.
In the past and I’m sure it’s still in play to some degree, editors particularly working with Avid products would do a low res offline edit and then ‘res up’ to uncompressed for the online finishing process. Now with large harddrives and RAID’ed arrays, if you have the drive space working uncompressed is feasible. With capture/output devices made by Aja, Blackmagic Design, Matrox and a host of others working completely uncompressed (provided you have an proportionate amount of storage space) is easier than ever.
How prudent is it to work uncompressed HD? Again it depends on your resources. If you’re not running a Duo/Quadcore or more system with at least 8GB of RAM at 64-bit with a minimum of 2.5TB of internal storage just for video and at least 1 750GB external storage drive (firewire or eSATA not USB) I don’t think its a good idea. Working uncompressed takes a huge amount of computer resources no matter what OS platform you use. It gets really intense when you hit the 1k mark or better in HD.