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x264 best H264 codec says MSU research and testing
Lots of very deep geeky stuff for the serious compressionist on H264 quality but the simple chart in the first link tells the story.
https://dmitryivanov.net/2012/06/22/which-h-264-codec-is-the-best/?goback=%2Egde_85213_member_127114211
Interesting that they mention Intel QuickSync acceleration. Also interesting is that it mentions Apple with MainConcept. So is that what Compressor is using now?source includes names of test sequences and frame sizes used.
https://compression.ru/video/codec_comparison/h264_2012/full free report
https://compression.ru/video/codec_comparison/h264_2012/mpeg4_avc_h264_video_codecs_comparison.pdfAnd for those who want to play. Here’s the link to the Free version of their testing tool.
https://compression.ru/video/quality_measure/vqmt_download_en.html#free