H.265 vs VP9 vs H.264

[rast...@gmail.com]

These guys have done a performance comparison of H.265 versus VP9 versus H.264: http://iphome.hhi.de/marpe/download/Performance_HEVC_VP9_X264_PCS_2013_preprint.pdf

To quote their conclusion: "A performance comparison of H.265/MPEG-HEVC, VP9, and H.264/MPEG-AVC encoders was presented. According to the experimental results, the coding efficiency of VP9 was shown to be inferior to both H.264/MPEG-AVC and H.265/MPEG-HEVC with an average bitrate overhead at the same objective quality of 8.4% and 79.4%, respectively. Also, it was shown that the VP9 encoding times are larger by a factor of more than 100 compared to those of the x264 encoder."

They seem to have used a VP9 encoder build from around the 12th of June this year (v1.2.0-3088-ga81bd12, they cite this thread https://groups.google.com/a/webmproject.org/forum/?fromgroups#!topic/webm-discuss/UzoX7owhwB0) so there may have been encoder improvements since then, but why is VP9 so far behind both the H.265 encoder and x264 in their testing?


-Ray

[AbbA Maa]

There were a discussion later on in the conference. There were a sort of agreement that the testing condition were different and hopefully in the future there will be more detailed comparision by both side to clarify the comparision results.

Thank you

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