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pcroland
[REQUEST] Implement DDP Atmos encoding
Well, the encoding only is possible from .atmos or .adm files, so...
What if the source is an Atmos stream?
What if the source is an Atmos stream?
Will be possible after Cavern applied Atmos metadata in ADM.
gstreamer can decode atmos, no need to use ADM.
You must use ADM to encode ATMOS in Davinci or in Nuendo.
@pcroland could you elaborate further what is needed to take THD and convert it to eac3 atmos? I might be able to assist.
We actually found a way and developed it. We'll be open sourcing it in the next month or so.
Atmos JOC is not possible from just a TrueHD source
It is actually possible from the TrueHD source. If the source is untouched (had no dialnorm ran on it) it will decode to what ever preset of channels you'd like easily.
can i try? :) i am willing to pay for it. :) send pm if open for testing. :)
We actually have a stable version of it done. However, we're re-writing the tool and we'll open source it. Right now it's 1 large script and we're re writing it in OOP.
Does it use DEE for encoding with a custom decoder or does the project have an encoder aswell?
can't wait to test it. :) i got 5.1.2 atmos setup, so keeping large truehd with atmos is no benefit for me... 768kbps JOC will be great. :D can't wait to test. :)
Does it use DEE for encoding with a custom decoder or does the project have an encoder aswell?
Uses a custom decoder but uses DEE to encode.
Actually we started the project based off of deew.
So totally open to working together.
Atmos JOC is not possible from just a TrueHD source
LG C9 has no problem transcoding THD to EAC3 while preserving Atmos. And of course even now it is possible if you have both THD and EAC3 source by using EAC3 panning metadata and WAV layer from THD (by using Cavern's special secret option).
can you write more? :) i want to try. :)
Atmos JOC is not possible from just a TrueHD source
LG C9 has no problem transcoding THD to EAC3 while preserving Atmos. And of course even now it is possible if you have both THD and EAC3 source by using EAC3 panning metadata and WAV layer from THD (by using Cavern's special secret
I'm decoding with dolbys reference player.
We'll open source it soon. Works 100% of the time as long as THD has not been manipulated in anyway with dialnorm.
So straight from bluray it always works.
Does it use DEE for encoding with a custom decoder or does the project have an encoder aswell?
Uses a custom decoder but uses DEE to encode.
Actually we started the project based off of deew.
So totally open to working together.
Could you write an e-mail or message me on Telegram?
Atmos JOC is not possible from just a TrueHD source
LG C9 has no problem transcoding THD to EAC3 while preserving Atmos. And of course even now it is possible if you have both THD and EAC3 source by using EAC3 panning metadata and WAV layer from THD (by using Cavern's special secret option).
can you write more? :) i want to try. :)
Sure. EAC3 has 256 samples of silence in front so you need to add that to THD track decoded to WAV ADM, note that. Secret option is called --override-bed, I asked for it here: VoidXH/Cavern#78
whare to put the command line... what tool??? cavern64 itself is gui... or am i missing something? :)
Cavernize GUI opens command line first, because it is compiled in Visual Studio using CLI option. Even if it has gui you can still use it as command line utility.
as long as THD has not been manipulated in anyway with dialnorm.
Does THD 4th actual (Atmos) substream uses Huffman too as EAC3 does? Did you stole the tables? Nuts, guys.
I don't understand what you're saying?
Cavernize GUI opens command line first, because it is compiled in Visual Studio using CLI option. Even if it has gui you can still use it as command line utility. <
so merge first 256 EAC3 5.1 samples with truehd with atmos stream, then decode to adm wav??? can you write telegram/signal or PM here? i am kind of confused... but maybe i drunk too much last night. :D :D
don't understand what you're saying?
Then how did you extract panning metadata to ADM with panning metadata? And how did you wrote the code that extracted all 16 objects from 8 channels? After that Cavern or even Davinci Resolve can be used to render it.
Dolby official libraries to decode the atmos data into what ever channel format is wanted.
Anyone interested in it can reach me on discord.
jlw_4049#1867
sent you request
official libraries to decode the atmos data into what ever channel format is wanted.
That is useless. Channel format is not needed by me or anyone, we need object format with panning metadata. That is closest to master format even if some of 128 objects are unified.
I guess this is useless decoded/encoded from a bluray thd track. Hmm
😀
or PM here
There is no PM on github. Those 256 samples are always silence, it is called encoder delay. Yes, you add 256 samples to the base layer, "bed", it will not allow you to proceed to ADM without that.
mail? discord? telegram?
guess this is useless decoded/encoded from a bluray thd track. Hmm
That will not have any moving objects, it will be fake Atmos. Did you look with cavern driver (Unity), do the objects move after you encode EAC3?
Yes all the channels work after encoded.