vpx/vp9/encoder
Marco 9ca6b46cef vp9: Adjust gf period for high average Q and overshoot.
For 1 pass vbr mode.
Increase the gf interval for case where average Q is close to
max and high overshoot is detected.

Small increase in overall avg_psnr/sssim metrics (~0.2/0.1%) for ytlive,
but improves the low-end (low bitrate) for several clips (less overshoot).

Change-Id: Ifba40f25b4861b2e0d9832c82d5359a6a3dce9f2
2016-04-19 17:18:11 -07:00
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