What is the current state of instant replay with casparCG? This thread should be a place to gather relevant information. I am currently trying to evaluate the readiness and required hardware specs to do 12G SDI instant replay, assuming the decklink 8K pro supports it. That would be using a 4 drive NVME x16 raid array for scratch storage. What file formats are people using for the file buffer?
Here is an older youtube video of 4x1 @ 720p.