I download a complete video playlist with the -f b option, that I can check the videos to decide whether its worst to save the films afterwards in a better quality (then e.g.: with -F, -f 137+140 ...). But to check the videos, it is not necessary to get the "best" premerge...
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it doesn’t stop there. As part of PMI’s Continuing Certification Requirements (CCR) program,you must maintain and renew your certification. And it is a mandatory requirement