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Re: Dolby Vision now possible through MP4 Mux.

Posted: Mon Jan 24, 2022 6:24 am
by Billycar11
RESET_9999 wrote: Fri Jan 21, 2022 7:59 pm
we really need a guide for this i know op is not active could you write up a guide or know where one is and i can recommend woodstock to pin it you seem to be one of the go to people on this or collaborate with others like it did.

Re: Dolby Vision now possible through MP4 Mux.

Posted: Mon Jan 24, 2022 3:30 pm
by dcoke22
Billycar11 wrote: Mon Jan 24, 2022 6:24 am
RESET_9999 wrote: Fri Jan 21, 2022 7:59 pm
we really need a guide for this i know op is not active could you write up a guide or know where one is and i can recommend woodstock to pin it you seem to be one of the go to people on this or collaborate with others like it did.
There's this thread: viewtopic.php?f=6&t=26514 but I'm not qualified to know if it is a good starting spot or not.

There's also this post by @yusesope: viewtopic.php?f=12&t=18602&start=2970#p96282 as mentioned by @RESET_9999 recently.

Re: Dolby Vision now possible through MP4 Mux.

Posted: Mon Jan 24, 2022 6:49 pm
by lexyz
RESET_9999 wrote: Wed Dec 29, 2021 4:17 pm @all
I was testing some hdr10 patterns converted to DV and look what happen on the Shield/X700/C8 with this P8 pattern : https://slow.pics/c/tnFWN04T (there's definitely something wrong with P8/P7 DV on the shield)

Re-did the FEL test files as well, hopefully, they work better on different devices...
https://drive.google.com/drive/u/1/fold ... V0E3VVkhiC
Thx for patterns :D
I have a different result with Shield TV, not so ugly as yours. But still worse than HDR10
https://slow.pics/c/taL2k1jx

Re: Dolby Vision now possible through MP4 Mux.

Posted: Mon Jan 24, 2022 7:01 pm
by RESET_9999
lexyz wrote: Mon Jan 24, 2022 6:49 pm Thx for patterns :D
I have a different result with Shield TV, not so ugly as yours. But still worse than HDR10
https://slow.pics/c/taL2k1jx
interesting...
So it means, on the shield the player-led DV is better than tv-led DV for the colorspace conversion but it has the same blue banding and YCbCr clipping is just horrible on that device.
Did you try your TV internal player?

Re: Dolby Vision now possible through MP4 Mux.

Posted: Mon Jan 24, 2022 7:18 pm
by lexyz
Nope, since it cant play p8 correctly
But I have X700
https://i.postimg.cc/gkPS9Vm0/DV-X700.png

Re: Dolby Vision now possible through MP4 Mux.

Posted: Mon Jan 24, 2022 7:53 pm
by RESET_9999
thanks for testing. x700 lldv looks right
There's no doubt in my mind, the shield is inaccurate when It comes to DV with an HDR10 base layer.
Maybe we should send the pattern to the the Nvidia devs... is there anyone in the beta group here?

Re: Dolby Vision now possible through MP4 Mux.

Posted: Tue Jan 25, 2022 11:31 am
by Cr4z33
I am not succeding into remuxing the English Dolby Vision video track with another E-AC3 and SUB tracks, meaning it doesn't play in DV.
  1. I first exctracted the main 10 L5 English HEVC, the Italian E-AC3 and the SUB files with tsMuxer GUI.
  • I put then all together with MKVToolNix GUI.
  • I again muxed the just created MKV with MakeMKV.
What am I doing wrong here? :?

Re: Dolby Vision now possible through MP4 Mux.

Posted: Wed Jan 26, 2022 2:19 am
by FubbAyH
You shouldn't need to put the MKV back through MakeMKV after muxing with MKVToolNix GUI. It's weird that audio or subs would affect how the video track plays. Do you definitely have the latest versions of MakeMKV and MKVToolNix GUI? (because older ones didn't handle DV in the way that is now standard)

Re: Dolby Vision now possible through MP4 Mux.

Posted: Wed Jan 26, 2022 11:59 am
by ArArdin
Cr4z33 wrote: Tue Jan 25, 2022 11:31 am
  1. I first exctracted the main 10 L5 English HEVC, the Italian E-AC3 and the SUB files with tsMuxer GUI.
It sounds like you extracted just the base-layer (BL). Depending on your workflow and endresult format, you always need to use or process EL in one way or another.
FubbAyH wrote: Wed Jan 26, 2022 2:19 amYou shouldn't need to put the MKV back through MakeMKV after muxing with MKVToolNix GUI.
Actually, that would depend on the workflow applied to create a (dual layer) DV mkv.
It is possible to import both, but separate BL and EL into MKVToolnix. MKVToolnix can mux this into a dual track mkv. This intermediate is often used to be able to add/ignore audio and subs. Not further being processed, this result however won't trigger DV when played back. A mediaplayer would just see it as a mkv with a secondary videotrack.
When you import and run the file in MakeMKV however, it will be converted into a single track dual layer profile 7 DV (BL+EL+RPU) mkv. Which will play perfectly, triggering Dolby Vision.

Without using EL in the endresult, of course another way is to extract RPU from EL, convert it to profile 8.1 and inject it back into the BL. Muxing that with MKVToolnix will result in a perfectly playable (single layer) profile 8 DV (BL+RPU) mkv.

Re: Dolby Vision now possible through MP4 Mux.

Posted: Wed Jan 26, 2022 1:20 pm
by Cr4z33
As I wrote it's a layer profile 5. :wink:

Right now I am remuxing the two MKVs (the English DV video track and the Italian E-AC3 and SUB tracks) with MKVToolNix GUI again to see what comes out.

Re: Dolby Vision now possible through MP4 Mux.

Posted: Wed Jan 26, 2022 1:28 pm
by Cr4z33
Nope it keeps displaying with the wrong colors with no DV detected. :?

Re: Dolby Vision now possible through MP4 Mux.

Posted: Wed Jan 26, 2022 8:19 pm
by ArArdin
Ah, as L5 is written right after main 10, I mistook it for being the encoding level and not DV profile.
Eventhough profile 5 uses 10bit hevc, video is encoded in Dolby Vision's propietary IPTPQc2 color space. Which may be the reason for the wrong colors.
Having no experience with DV profile 5, I do imagine the possibility that Dolby licensed hard- or software is needed for proper playback.

Re: Dolby Vision now possible through MP4 Mux.

Posted: Thu Jan 27, 2022 12:24 pm
by mtotheb
Has anybody tried the new https://www.mi.com/global/product/xiaomi-tv-stick-4k/

it seems to officially support HD Audio (DTS HD) as well as Dolby Vision. When I receive mine i’ll test if FEL playbacks correctly while also having HD Audio Passthrough.

Re: Dolby Vision now possible through MP4 Mux.

Posted: Thu Jan 27, 2022 3:21 pm
by RESET_9999
mtotheb wrote: Thu Jan 27, 2022 12:24 pm Has anybody tried the new https://www.mi.com/global/product/xiaomi-tv-stick-4k/

it seems to officially support HD Audio (DTS HD) as well as Dolby Vision. When I receive mine i’ll test if FEL playbacks correctly while also having HD Audio Passthrough.
interesting thank's for sharing...

@all
Now that lav filters supports DV p5 and p8, is there any video renderer or player that can use it right now??

I don't really expect madvr to support it since madshi only cares about SDR and his over-priced Envy.

Re: Dolby Vision now possible through MP4 Mux.

Posted: Thu Jan 27, 2022 5:39 pm
by staknhalo
mtotheb wrote: Thu Jan 27, 2022 12:24 pm Has anybody tried the new https://www.mi.com/global/product/xiaomi-tv-stick-4k/

it seems to officially support HD Audio (DTS HD) as well as Dolby Vision. When I receive mine i’ll test if FEL playbacks correctly while also having HD Audio Passthrough.
Just be aware - if you plan on using this device besides just for testing or strictly DV playback alone or w/e - I've used many Android TV devices over the years - I had to sell/get rid of my Mi Box S because of a wake from sleep issue they refused to acknowledge or fix for years (could not use Google assistant in any manner to wake the device from sleep - even another remote via HDMI-CEC would not work - only the original remote it came with would work to wake the device with a button press from sleep) - and I saw so many small QoL bugs with almost every update it felt - I can't recommended Mi products especially if you have alternatives in your country/price range.