libx264とlibx265でのロスレスエンコード結果例

※各ピクセルフォーマットのy4mを用意して、libx264とlibx265でロスレスエンコードした場合の結果
※コマンド
　H.264: ffmpeg -i yuv4**p*.y4m -pix_fmt yuv4**p* -c:v libx264 -qp 0 out.mp4
　H.265: ffmpeg -i yuv4**p*.y4m -pix_fmt yuv4**p* -c:v libx265 -x265-params lossless=1 out.mp4

==================================================================================================

テスト結果まとめ


---------------------------------------------
 H264 yuv420p
---------------------------------------------
  h264 / High 4:4:4 Predictive / yuv420p
  SSIM Y:1.000000 (inf) U:1.000000 (inf) V:1.000000 (inf) All:1.000000 (inf)

---------------------------------------------
 H264 yuv444p
---------------------------------------------
  h264 / High 4:4:4 Predictive / yuv444p
  SSIM Y:1.000000 (inf) U:1.000000 (inf) V:1.000000 (inf) All:1.000000 (inf)

---------------------------------------------
 HEVC yuv420p
---------------------------------------------
  hevc / Main / yuv420p
  SSIM Y:1.000000 (inf) U:1.000000 (inf) V:1.000000 (inf) All:1.000000 (inf)

---------------------------------------------
 HEVC yuv444p
---------------------------------------------
  hevc / Rext / yuv444p
  SSIM Y:1.000000 (inf) U:1.000000 (inf) V:1.000000 (inf) All:1.000000 (inf)

---------------------------------------------
 HEVC yuv420p10le
---------------------------------------------
  hevc / Main 10 / yuv420p10le
  SSIM Y:1.000000 (inf) U:1.000000 (inf) V:1.000000 (inf) All:1.000000 (inf)

---------------------------------------------
 HEVC yuv444p10le
---------------------------------------------
  hevc / Rext / yuv444p10le
  SSIM Y:1.000000 (inf) U:1.000000 (inf) V:1.000000 (inf) All:1.000000 (inf)