WWDC17で新しく発表された画像フォーマットHEIFを使ってみた - Qiitahttp://qiita.com/tamanyan/items/cac337e8d08fb7eb2c2d …
oh, found you here :) seems no library can do tiles split like iOS 11 do. I dont know if that affects compression rate or not, but parallelism is good.
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crf 使えば圧縮率変えられる ffmpeg -i {source} -vcodec -pix_fmt yuv420p -codec:v libx265 -crf 15 -preset placebo -x265-params info=0 -f hevc temp.hvc MP4Box -add-image temp.hvc -ab heic -new output.heichttps://qiita.com/yohhoy/items/fac992c335fa4fbbbbea …
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Not this one. look at this log, a 4032x3024 photo is actually 48 tiles of 512x512 + 320x240 thumbnails.https://gist.github.com/rcombs/fa1c860615fa9ee6620ef70f98c95084 …
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