A No-Reference Modular Video Quality Prediction Model for H.265/HEVC and VP9 Codecs on a Mobile Device

Table 3

Encoder configuration for VP9 codec.

Parameter	Details
Encoder version	Ffmpeg 3.1.3
Encoding quality	Best
Number of passes	2
Bit rate control mode	Variable bit rate (VBR defined by target bit rate)
Constrained quality (CQ) level	Same as quantization Parameter QP
Initial, optimal, and maximum buffer level	4000 ms, 5000 ms, 6000 ms
GOP size	Auto
GOP length (intraperiod)	320
Internal bit depth	8