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  • jlp
    started a topic details about MP4.DolbyVision single-layer

    details about MP4.DolbyVision single-layer

    i don't know the complete know-how, just want to be sure... for example.. Pet Sematary.. it has about 5GB Dolby Vision layer. But whe i rip it to MP4.DolbyVision Single Stream, it's big exactly as without that DoVi layer. Is it really preserved? how then?
    Last edited by jlp; 07-08-2019, 08:15 PM.

  • signals
    replied
    Originally posted by Grencola View Post
    What are the chances of ditching mp4 and/or adding a ts.dolbyvision profile? then you can have a copy video AND a copy audio setting to preserve hd-audio+atmos/dts:x
    The chances of ditching mp4 are zero. It is one of the most universally playable file formats. It may not currently do this, but that may change over time.

    Leave a comment:


  • 0tr
    replied
    So Wilson.Wang is there any actual quality difference between single layer and dual layer? I mean there must be something that is less in the single layer file if the second layer goes missing...

    Leave a comment:


  • Grencola
    replied
    What are the chances of ditching mp4 and/or adding a ts.dolbyvision profile? then you can have a copy video AND a copy audio setting to preserve hd-audio+atmos/dts:x

    Leave a comment:


  • Wilson.Wang
    replied
    hi jlp,

    Below is from Dev Guy,
    Single stream is BL+RPU,
    Two Stream is Main Stream HDR10 video, Second Stream EL+RPU
    And Dolby Vision is in RPU, Both will have Dolby Vision.

    Single Stream not have EL for now. It is not Dolby Vision, it some info for HDR10 to 12bit .
    Mp4 container not have such mode as in Dolby Demo files for now.

    yours,
    Wilson

    Leave a comment:


  • jlp
    replied
    when demuxed the MP4 with dolby's mp4demuxer_64bits, i got regular h265 stream called dv_el_out_1.h265

    Code:
    Video
    Format                                   : HEVC
    Format/Info                              : High Efficiency Video Coding
    Format profile                           : Main 10@L5.1@High
    HDR format                               : SMPTE ST 2086, HDR10 compatible
    Width                                    : 3 840 pixels
    Height                                   : 2 160 pixels
    Display aspect ratio                     : 16:9
    Frame rate                               : 23.976 (24000/1001) FPS
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0 (Type 2)
    Bit depth                                : 10 bits
    Color range                              : Limited
    Color primaries                          : BT.2020
    Transfer characteristics                 : PQ
    Matrix coefficients                      : BT.2020 non-constant
    Mastering display color primaries        : Display P3
    Mastering display luminance              : min: 0.0001 cd/m2, max: 1000 cd/m2

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  • jlp
    replied
    attaching.. thanks.. as you cann see, single stream is "missing" 4.6GB. Pet Sematary DoVi Single Stream.txt dvdfab_internal.log Pet Sematary DoVi Two Stream.txt

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  • Mona
    replied
    Hi jlp,

    Please use mediainfo to analyze the resulted mp4 file and post the result here.

    Also, when you set it to copy video in the advanced settings window, there are two options available, please check image attached and try "Copy Video" to see the result.
    If still have same problem, please post dvdfab log files and the media info result from the output file. Thanks.
    Click image for larger version  Name:	copy video option.png Views:	1 Size:	70.0 KB ID:	370013

    Leave a comment:

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