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(parent: 6adbe09) | patch
make rdmult adaptive for intra in quantizer RDO
authorYaowu Xu <yaowu@google.com>
Thu, 11 Nov 2010 05:16:17 +0000 (21:16 -0800)
committerYaowu Xu <yaowu@google.com>
Thu, 11 Nov 2010 19:33:35 +0000 (11:33 -0800)
commitef2f27f10e39bc21254effe1083773c9b761d487
tree388c8e3bb64956a675e04f07a5521cb90d3db385tree | snapshot
parent6adbe09058f05a42ff1360ab55e3916f45e39a0ccommit | diff
make rdmult adaptive for intra in quantizer RDO

This intends to correct the tendency that VP8 aggressively favors rate
on intra coded frames. Experiments tested different numbers in [0, 1]
and found 9/16 overall provided about 2-4% gains for all-intra coded
clips based on vpx-ssim metric. The impact on regular encoded clips
is much smaller but positive overall. Overall impact on psnr is also
positive even though very small.

Change-Id: If808553aaaa87fdd44691f9787820ac9856d9f8a
vp8/encoder/encodemb.c diff | blob | history
Domain: Multimedia / Codec;