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Bitmovin's comparison: https://bitmovin.com/av1-multi-codec-dash-dataset/

MSU's comparison from a couple of months ago: http://www.streamingmedia.com/Articles/News/Online-Video-New...

The x265 guys complained about the recent MSU test: http://www.x265.org/x265-incorrectly-represented-msus-2017-c...

Actually had to double check this to make sure it wasn't in the sources. It seems the the encoder basically sees the trees as only having a small difference, but really visually it's quite large. The solution is a better distortion function in the encoder - libaom's is simple but dumb. (luckily this means no decoder or format changes)

That is a really weird distortion effect. I don't know if I would have noticed without you pointing it out, but it almost made me feel seasick.

Judging a codec by any one single frame isn't really good enough.

The samples _and_ performance metrics used have to be quite varied.