[Cin] Three PCIe capture cards with analog video capabilities and Linux support

[Terje J. Hanssen]

Just my quick preview evaluation and ranking - not every detail has been 
found or verified ....


1) Blackmagic Design Intensity Pro 4K
10 bit color precision, 4:2:2 subsampling , SD analog and HDMI input, 
prop-driver, "best priced"
https://www.blackmagicdesign.com/no/products/intensitypro4k
https://www.blackmagicdesign.com/no/products/intensitypro4k/techspecs/W-INT-05
https://blog.za3k.com/capturing-video-on-debian-linux-with-the-blackmagic-intensity-pro-4k-card/


2) AVerMedia CL311-M2
8 bit color precision, 4:2:2 subsampling , SD analog and HDMI input, 
v4L2, medium priced
https://www.avermedia.com/professional/product/cl311_m2/overview
https://www.avermedia.com/professional/product/cl311_m2/spec
https://www.avermedia.com/professional/download/cl311_m2#ans_part


3) Osprey 260e
10 bit? color precision, 4:2:2 subsampling , SD analog input only, v4L2, 
high priced
https://www.ospreyvideo.com/analog
https://docs.google.com/viewer?url=https%3A%2F%2Fdf44571b-9d7f-4226-9ca4-7272009c0e39.filesusr.com%2Fugd%2F2c643c_6fe67c4fbd7a48dabc4272b634282f98.pdf&pdf=true
https://www.kernellabs.com/blog/?p=1801