I've read in different places about
-deadline options for VP9 encoding with
ffmpeg, they seem to control more or less the same aspect (compression efficiency to execution time ratio), but I could not find how exactly the two are related.
Many web pages mention only one of the two. The FFmpeg wiki metnions both, but in different sections: Controlling Speed and Quality section mentions
-dealine but says nothing about
-speed is tangentially mentioned elsewhere.
What is the relation between the two? Does it make sense to specify both, or does one override the other?