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VP9
- VP9 Bitrate Modes in Detail - Google's
- AV1 vs VP9 vs AVC (h.264) vs HEVC (h.265): Part I - Lossless - a good read, I like this one
- Pitfalls in VP9 - goes in a bit of detail about quality levels
- VP9 Tips - Encoding Modes and Recommended Command Line Options - upstream's wiki
vpxenc
By default, vpxenc will use 2-pass method for encoding.
As far as I can tell, there's no default when using CQ mode. I don't know what variables it's using for default when doing a 1-pass encode.
HandBrake
By default, HandBrake uses a CQ of 22.
