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Has anyone been able to edit and output edited 4K video files???
Yes (though I have run into a few bugs).
have you been able to view these finished 4k videos on your PC's??
Yes. I can view them in the the PowerDirector viewer, in PowerDVD 14, and in MPC-HC .
What pc's (specs) are you using and are any special video cards needed?
My main machine specs are in my signature.
IMO, you should have at least 16GB RAM to work with 4K and 4 CPU cores . More CPU cores are better.
Intel CPUs will do better than AMD in general due to Quicksync. They also cost more.
4K files will be very large. A large HD or SSD will be helpful. Large SSDs are still expensive, though.
A 4TB SSD RAID array (2x2TB, or 4x1TB) would still cost around $1500, which is the price of a new computer. And 4TB may still be too small for 4K depending on how many projects you have.
Effects are rendered in software, and you need a fast CPU, or it can take forever.
As far as video card, it depends on your camera, and whether it uses H264 or H265.
If H264, you can use a Maxwell-based video card like the GTX 750Ti I have. These cards should be coming down in price quite a bit now. This card supports 4K decoding/encoding in H264 .
If H265, get a Maxwell2-based video card, like the GTX950/960 which have both encoders/decoders for H265 (in addition to H264).
If you are getting a new computer, you might as well go for Maxwell2.
IMO, encoding in H265 is currently a bit of a dicey proposition, as many PCs cannot view the content - they lack H265 hardware decoders and are not fast enough to decode 4K H265 in software.
A much larger share of PCs has H264 hardware decoders, but not all of them can decode streams at 4K resolutions/bit rates.
I would say that almost all 4K cameras out there below $5000 are still transitional models IMO, because they only do 4K at 30fps.
In upcoming years, there will be 4K cameras at 60fps below this price point.
Right now, I only know of the Panasonic HC-X1000 . $2800 and still using a small sensor, sigh.
FYI, recently, I bought an FDR-AX33 for $1040 including tax and 4 year extended warranty. I greatly regret it. The picture is actually softer than my old Canon HG21. It will be going back to the store. I'm not sure what else to get. The Panasonic F-Z1000 has a larger 1" sensor, but also an annoying 30 minute clip recording limit .
MSI X99A Raider
Intel i7-5820k @ 4.4 GHz
32GB DDR4 RAM
Gigabyte nVidia GTX 960 4GB
480 GB Patriot Ignite SSD (boot)
2 x 480 GB Sandisk Ultra II SSD (striped)
6 x 1 TB Samsung 860 SSD (striped)
2 x LG 32UD59-B 32" 4K
Asus PB238 23" HD (portrait)
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