They claim that a 4K video coming into their site should optimally be 35~45Mbps when encoded with the older x264 codecs. Then I recently read YouTubes suggest guidelines for bitrates. That way I know I should never be disappointed. Therefore I played it safe, bump it down a notch and just encode all of my stuff with x265 10-bit at CRF of 20 on Slow preset. Through some experimentation I found that I personally never can really see a difference between anything lower than 22 using a Slow present. It states that for 4K videos with x265 they suggest a Constant Rate Factor (CRF) encoding in the range of 22-28 (the larger the number the lower the quality). In the past, I went straight to Handbrake’s documentation. I mainly use Handbrake now use ffmpeg because I learned Handbrake only has a 8-bit internal pipeline. I want a setting that I can use on any incoming 4K HDR video I buy. The honest to god true answer is “it depends”, however I find that answer unsuitable for my own needs. What are the best settings for me to use when encoding x265 videos? What are the best settings for me to use when encoding x265 videos?.
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