Dolby Vision

[Grencola]

if you don't have an SSD then just leave it for a couple hours lol, it can take a really long time if your drive / cpu (like mine) are slow as hell eventually you should see the output file start to climb on GBs rather quickly though.

I got an outputfile when i waited longer doesnt play as dolby vision though, as dvdfab mp4 does.
Does this produce a dual layer dv?

I figured as much Yea, it's dual layer. dvdfab is the only program that can make single layer DV mp4s as it uses some proprietary tech that hasn't been reverse-engineered yet.

[Hydrad]

I just tried to create a Venom mux and it won't even play on my LG TV even before adding audio, after mp4muxer.

I demuxed it with:

Code: Select all

ffmpeg.exe -i bluray:. -map 0:0 -c copy ./BL.hevc -map 0:1 -c copy ./EL.hevc

then:

Code: Select all

mp4muxer_release --dv-profile 7 --input-file BL.hevc --input-file EL.hevc --output-file output.mp4

The same process worked fine with another movie.

Any ideas what could be wrong?

[Peppe The Rock]

So after enough testing, I can now safely say the dv mp4s made from mkv's in fact DO WORK just fine I've ran my program on like 10 of them and they all show dv and look and play amazing, with better contrast in the darker scenes that hdr10 misses. I'll update my app and take mkv out of testing and into full on good to go mode.
I've also added total elapsed procedure time, disk space check before starting, and bumped it to version 2.0 since I don't think I can add any more features with the limited knowledge I have. multiple file support would be nice though if any coders want to add it for me

DV-MP4-Maker v2.0: https://bit.ly/2WbHZR0

cheers.

Hello, from a m2ts dual video track, you can make one with my LG DV C9 law perfectly ... But for anyone who is Italian like me, how do you select the audio track dedicated? Is there a way to "keep" an Atmos audio track at least in losses? Or, at least, an EAC3 7.1? Thanks and good job!

[yusesope]

Hello davilla,
it seems that now there is the possibility of implementing a TrueHD/ATMOS track inside an MP4 container.
Take a look at my experiment on the makemkv forum (you can also find an example file there).

The technical documentation can be found HERE.

I hope you can implement the correct decoding on both the Apple TV and the new Nvidia Shield TV.
In the meantime, I will update my "HOW TO" post.

Greetings.

[1000010]

ffmpeg.exe -i bluray:\path\to\bluray -map 0:2 -c:a copy -strict -2 %userprofile%\Desktop\atmos.mp4

I tried this on ffmpeg v4.2.1-2 on linux and I get an error:

[mp4 @ 0x5601bd0ccc80] Tag AC-3 incompatible with output codec id '86060' ([0][0][0][0])
Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input

what am I doing wrong?

I have also experienced audio delays of ~200ms when using your method for creating single layer DV files with trueHD->lpcm conversion. can this somehow be fixed automatically? I have not checked if the delay is the same for all the blurays.

[KingCarstonoX]

Does anyone have an idea how to assign a language to the soundtrack I am extracting with FFmpeg?

Currently this is recognized as “Unknown”…

[KingCarstonoX]

Short for info. With the new Shield (2019 Pro) and the Plex Beta, the single layer DV MP4s are played. TrueHD not yet. Yesterday I was able to test DTS HD successfully for the method here.

[zibawal]

Short for info. With the new Shield (2019 Pro) and the Plex Beta, the single layer DV MP4s are played. TrueHD not yet. Yesterday I was able to test DTS HD successfully for the method here.

How, please elaborate with links:)

[Agentreza]

I suck at command prompts, can some share what their putting in to extract the audio so I can get an idea? I created the SL dolby file so got through the easy part

[noggin]

Just a thought about the double layer to single layer conversion. (I've just got my first UHD Blu-rays with a DV layer and have been playing with them on my Apple TV 4K and DVD Fab)

AIUI UHD Blu-rays with DV can have two distinct types of Dolby Extension Layer - a very low bitrate MEL (Minimum Extension Layer) which contains little more than metadata, and a higher bitrate FEL (Full Extension Layer) that carries metadata and a 10->12 bit expansion layer ?

Does the DVD Fab single layer conversion from a UHD Blu-ray dual layer just add the metadata irrespective of whether an MEL or FEL is present on the UHD disc, or does the single-layer benefit from the FEL? (AIUI MELs are far more common than FELs?)