>I am not sure why they take full 1 day? unless they do each bitrate serially which I think is not as hard to parallelize as it is to parallalize single bit rat

>I am not sure why they take full 1 day? unless they do each bitrate serially which I think is not as hard to parallelize as it is to parallalize single bit rate by chunking. I think the talk I know this from is https://www.youtube.com/watch?v=tQrsz3BrfwU https://www.youtube.com/watch?v=tQrsz3BrfwU - they chunk not only for encode but also for QC (and QC validation on the resulting transcoded asset). If memory serves the talk also discussed the long transcode time, because their transcoder (EyeIO at the time and I have not heard differently since) is optimised for efficient packing over performance