- Edited
Hi all,
I have bought a capture card to test for dithering, specifically the BlackMagic Decklink Mini Recorder 4k. It'll arrive next week, and I'll update you when I get some results. Hopefully no one chimes in telling me I've bought the wrong card, it looks like it can do lossless capture at 60hz 1080p.
@Everyone for testing I have access to several gtx660s, a gtx1060, 1st 6th & 8th gen intel i3/5/7 chips, GT720, quadro 295/310. Assuming this all works and you want me to test a card I can, but you'll need to post one to me in the UK - unless its a cheap card I can afford to buy.
@JTL This is mostly directed at you, since you were/are going to do this.
I intend to use VLC player to play back the captured video and save several frames using the VLC snapshot facility as .png - apparently this is lossless though I am not sure if is sufficient. From there I have a C++ library that'll decode .png into colour values that I can used to compare each frame and spot any differences. If you have a better analysis method that you can share with me that'd be great. I can of course send you the video files which I capture for your own personal analysis - though they'll be large files, even with only a few seconds of video.