这个问题不是这么简单，无论单层还是双层，能达到的目标是完全一样的（通俗说是画质），
只是制作时你咋选而已，对于专业后期工作室：
是你在用Davinvi resolve调色后数字母版制作完成后决定分发给谁（distribution）的时候决定的。
杜比官方的建议：
https://www.dolby.com/us/en/technologies/dolby-vision/dolby-vision-bitstreams-in-mpeg-2-transport-stream-multiplex-v1.2.pdf
对于我们业余人士也可以选（摘自MAKEMKV论坛）：
Profile 4: BL+EL+RPU, SDR compatible
Profile 5: BL+RPU, (Unspecified colorspace = IPT)
Profile 6: BL+EL+RPU, HDR10 compatible
Profile 7: track 1 BL non-DV, track 2 EL+RPU HDR10 compatible
Profile 8: BL+RPU, HDR10 or HLG or SDR compatible
For dual layer profiles 4, 6 and 7, the BL (Base Layer) is the SDR or HDR10 HEVC layer, the EL (Enhancement Layer) is the Dolby Vision HEVC layer.
Profile 4 is deprecated for service providers (Netflix, Amazon etc.) only: no point broadcasting dual layers.
IMHO Profile 6 and 8 are being deprecated by Dolby because Dolby do not need/want compatibility with concurrent HDR10 anymore. This does not mean that SoC reading P4 (resp. P5) will not keep on reading P6 (resp. P8).
Double PID = 2x HEVC 10bit tracks with the secondary PID containing (EL+RPU) data.
Single PID = 1x HEVC 10bit track (BL+EL+RPU -> double layer or BL+RPU -> single layer) Ok as I said I am not an expert but I read a lot about DV. I have never read or heard of PID. Google also does not tell me what that should be.
I always understood the Dolby Vision white paper as 2x HEVC is dual layer and 1x is single layer. Or do I get the graphic wrong:
PID information can be found here on page 13:
https://www.dolby.com/us/en/technologie ... x-v1.2.pdf.
这个profile制作前选择，需要知道每个profile的含义命令行加?即可。
所以画质是否养眼和单双层，是否蓝光原盘没有任何鸟关系。
但是杜比视界是否一定比HDR10看起来舒服呢，其实一样不见得，这问题就太复杂了，大概写个十期的专栏才能入门吧。
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