tree fb2b9045bc46ecc6f0a8e887a29c82cf0315ff20
parent 8487e95f6894a0854546e3cd20dc2960f1f3e077
author Cheng Chen <chengchen@google.com> 1562970814 -0700
committer Cheng Chen <chengchen@google.com> 1563814476 +0000

One-pass encoding of key frame with temporal filtering.

Now we only encode the temporal filtered key frame once.
Avoid the slowdown introduced in this CL:
https://aomedia-review.googlesource.com/c/aom/+/90081

Performance:
150 frams, VBR, spd1:
         avg_psnr     ovr_psnr     ssim
lowres    -0.088       -0.146      -0.125
midres     0.162        0.029       0.305

STATS_CHANGED

Change-Id: I7f71fb707f187d49c9cf65c72019082c234bd6f8