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本帖最后由 chungexcy 于 2019-9-7 14:58 编辑
你提到dolby vision，这个有点复杂，有几种格式。其中一种是BD采用的profile 7.1，有一个增强层的概念，播放器会把两个视频流合成成一个杜比视界。具体可以参考白皮书 2.1 Dolby Vision bitstream profiles。
https://www.dolby.com/us/en/technologies/dolby-vision/dolby-vision-profiles-levels.pdf Dolby Vision, Version 1.0, dvhe.05.09, BL+RPU
应该指的是profile5，IPT HDR HEVC(BL)+dynamic metadata(RPU)，应该是苹果和网飞用的那种格式。和蓝光的不同，蓝光是YUV HDR，不管metadata就是标准HDR。
上面这个是发布者对文件的描述，"Indicates included stream hidden by this playlist."是不是这个原因导致无法用啊？为什么第二个视频信息只有64kbps啊？这到底怎么用啊？是不是不能直接播放m2ts文件，要按照原盘的引导文件来播放？
可尝试一下杜比官方的mp4合成工具，但不知道怎么支持atmos。
https://github.com/DolbyLaboratories/dlb_mp4base
教程如下
SOURCE: TL
It is official, we can now make Dolby Vision remux, not in MKV though, in MP4.
And it has been tested working on LG Oled TVs, Philips DV player and Vizio TVs
Here is the method shared in another forum:
*YOU NEED AN ISO OF THE MOVIE! You cannot do this with any pre-existing remuxes since they actually remove the Dolby Vision layer!
*Right now we are limited to only MP4 and AC3 audio. I am trying to figure out and hoping MakeMKV guys figure out a way to convert the MP4 into an MKV and still trigger dolbyvision
The steps are:
Make ISO of movie. I have only tested this with Black Panther since that's the only one I own. I will be buying Gladiator this weekend to test out though.
Use TS Muxer to open the ISO. Find the correct M2TS file and demux the following files:
A. HEVC1 in 4K (Base layer)
B. HEVC 2 in 1080p (this is the dolby vision enhancement layer)
C. Audio track which you will have to convert to AC3. This is a hard line limitation- you need to use AC3!!!
Once you have HEVC1, HEVC2, and the Audio track. Run Dolby Vision MP4Muxer (https://github.com/DolbyLaboratories/dlb_mp4base)
DolbyVision MP4 Muxer only works in Command Prompt so you have to navigate to the corresponding folders where the files are and type
mp4muxer --dv-profile 7 --input-file (baselayername.hevc1) --input-file (dvlayername.hevc2) --input-file (audio.ac3) --media-lang eng --output-file (nameofmovie).mp4
I have tested it with Justice League, Venom, Matrix 1999, Sicario 2 and they are all working on my LG OLED TV.
最后说一句，不要迷信杜比视界，增强层更没有实际意义。现阶段和HDR10没有本质区别，都是YUV下的PQ HDR改良（缩）优化（水）版。码率为王，流媒体的杜比视界还不如蓝光的HDR10版好。
atmos倒是一个不错的提升，就像HDR相对于SDR一样。但这也得基于硬件（扬声器数量），就像电视HDR一样。一个回音壁也许会有区别，但有区别不等于更加正确，所以我现在坚持用一个不错的5.1。
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，可能之前一直用的DTS-HD，跟杜比一直没关系，不知道为什么这个truehd解码出来了，还是没有Dolby Atmos 的图标，我在试机碟里可以出这个图标啊。回音壁打算到双11时候再买，yamaha的108怎么样？