Dolby Vision w/FEL + 3D for PC (AMD/Intel/nVidia)

Quote from hadesdevls

LibreELEC Hades 1.0 RC4 is out:
https://github.com/hadesdevls/Lib…es/tag/v1.0-rc4

DOLBY VISION

- Native Dolby Vision on GeForce GTX 900, GTX 10 and TITAN V. NVIDIA's driver 615 doesn't support them, so Hades now also carries driver 580, patched to give Kodi native Dolby Vision, Low-Latency, HDR10+ and 3D frame packing. It's chosen at boot. Nobody has run it on one of these cards yet.
- Zoom, vertical shift and stretch keep native Dolby Vision, scaled the way a certified player scales them. A 1080p video on a 4K screen is now scaled the same way, which brings it closer to the 4K master (average ΔE ITP 0.349 to 0.266 on profile 5 film, measured in software).
- New: Dolby Vision sent as HDR10+, for HDR10+ displays without Dolby Vision such as many Samsung TVs. The film is rebuilt and sent with HDR10+ metadata that Hades measures from the picture, scene by scene (Hades' measurements, not the studio's). Seen working with a profile 7 FEL film on a Samsung Odyssey OLED G6. Off by default.
- Profile 8.4 (the HLG Dolby Vision that iPhones record) goes out natively where its metadata declare PQ, profile 8.2 is composed as the specification describes, and profile 5 is always rebuilt where it can't go natively.
- The 2016 Dolby Vision TVs that need the older HDMI 1.4b signalling, LG's OLEDs of that year among them, get it as an option on Intel, AMD and NVIDIA.
- Discs with flat Dolby Vision metadata can play, per video, with metadata measured from their HDR10 picture.
- Fewer ways to lose native Dolby Vision: an unusable v4.0 metadata block is skipped, NVIDIA's driver now hands Kodi the whole EDID, and the output is set again after a wake from suspend.

HDR10+, HDR10 AND THE DISPLAY

- HDR10+ seen working on a Samsung Odyssey OLED G6 from an RTX 4080 SUPER, with the values sent shown in the player info.
- A bug in NVIDIA's own driver fixed: its InfoFrames lost their last byte, which cut HDR10 MaxFALL values of 256 and above and signalled top-and-bottom 3D as frame packing.
- HDR10 on NVIDIA to TVs that declare HDMI 3D (NVIDIA's driver sent the 2016 LG OLEDs none), and at 4K 24, 25 and 30 Hz to TVs that take those modes by HDMI VIC.
- SDR at 8 bits on NVIDIA and Intel, as Windows sends it, and an option to hold HDR10 and HLG at 8 bits for TVs with 8-bit panels.
- New TV modes, such as Deep Colour turned on at the TV, are picked up without a restart.
- On NVIDIA laptops whose HDMI port is dual-mode DisplayPort, Dolby Vision starts once the video's mode is set, with the link brought up from scratch.

FASTER, SAME BYTES

Each of these leaves the output identical, checked with the Dolby Vision bridge running in software: fewer row reads and half floats in the enhancement layer's resampling (24.9 to 12.4 MB per 4K FEL picture), 16-bit composed planes, both 4:2:2 rows of each 4:2:0 row from one shader invocation, repeated pictures recommitted instead of redrawn on NVIDIA, Dolby Vision as HDR10 kept at 10 bits, and the windows over a video loaded ahead while the menus are idle.

SMOOTHER ON MODEST GPUS

Frames that keep missing their refresh are presented a frame ahead, frames with menus over profile 7 FEL step down only on GPUs that can't keep up and only while the menus are up, and the enhancement layer's decoder waits for a free surface instead of restarting the layer. On the 7950X3D's integrated Radeon, profile 5 with the player info up went from 32, 31, 58 and 6 late frames per 10 s in RC3 to 26, 8 and 0.

DISKS, SOUND, GRAPHICS

- A USB start now keeps every internal disk away. Disks on controllers other than NVMe and AHCI (SATA in IDE mode, RAID, UFS, virtio, eMMC) used to be mounted read-only.
- You choose which internal disks and partitions are shown. An unticked disk is released before anything else runs, with the kernel locked down.
- Until you choose an audio output, Kodi uses the HDMI output of the display it's showing on.
- Blu-ray Java (BD-J) menus can run with the "JRE for BD-J menus" add-on.
- Intel Arc B and Core Ultra 200V get the xe firmware they need for a picture.

UP TO DATE AND SAFER

Linux 7.3, LibreELEC and Kodi 22 "Piers" at their latest commits, OpenSSL 4.1.0 and Python 3.14.10. Known security issues fixed in avahi (17 CVEs), expat, OpenSSL, glibc, BlueZ, BusyBox, FFmpeg and MariaDB Connector/C, plus two that upstream hasn't fixed yet, fixed in Hades: connman (CVE-2026-115863) and avahi (CVE-2025-59529).

TESTED

With this image on my Ryzen 9 7950X3D: Dolby Vision 5, 7 FEL and 8.1, HDR10 and TrueHD Atmos with an LG C5 on both the RTX 4080 SUPER and the integrated Radeon, and HDR10+ plus a profile 7 FEL film sent as HDR10+ on a Samsung Odyssey OLED G6 from the 4080. Everything not tried yet is listed in the release notes.

If you have a GTX 900 or GTX 10 card, a 2016 LG OLED, an HDR10+ TV or Intel Arc B graphics, I'd especially like to hear how it goes.

Display More

Very nice release, can't wait to test it this Friday when my SSD USB-stick arrives.

Hopefully I can follow the installation instructions, haven't dealt with Linux in a decade.

Quote from CroqueMr

https://github.com/CroqueMr/libre…/tag/R1.0.0-RC1

Repo will be updated later but release is up

R1.0.0 RC1 - Performance improvements, DV-to-HDR10+ and wider hardware support

Wow, RC1 is finally here! 😄

Thanks a lot, CroqueMr, for all the hard work you've put into this project. Really appreciate the time and effort you've spent improving things and listening to everyone's feedback.

I'm really looking forward to trying RC1, especially the FEL improvements and the playback fixes. I'll be testing your new build and sharing my feedback if I come across anything.

Great work as always, and thanks again for keeping this project moving forward.👍

Great work CroqueMr and hadesdevls

Quote from Khazar

Very nice release, can't wait to test it this Friday when my SSD USB-stick arrives.

Hopefully I can follow the installation instructions, haven't dealt with Linux in a decade.

Khazar thanks! You won't need to know any Linux for it: once it starts, all you see is Kodi. The easy way is the installer for Windows: on the release page, download LibreELEC-Hades-Installer.exe and the .img.gz (with its .sha256) into the same folder and double-click the installer. Windows warns twice because the installer has no paid signature: "More info" and "Run anyway", then allow it to make changes. Pick your USB SSD, type the word it asks for, and it writes the image and reads it back to check it. If you'd rather prepare the drive on a Mac or another system, any program that writes disk images takes the .img.gz as it is (balenaEtcher, for example).

Then restart the PC, open the boot menu (F8 on ASUS, F11 on MSI and ASRock, F12 on Gigabyte and most laptops) and choose the UEFI entry of the SSD. The first start prepares the drive and restarts once by itself. Secure Boot has to be off. If anything looks wrong, tick "Save diagnostics" in the installer and the logs stay on the drive, ready to attach to an issue. Have fun on Friday.

hcliec001 thanks, much appreciated! If you give RC4 a try, I'd like to hear how it goes on your setup.

Hi hadesdevls, thanks for the new release.

I was reading that croquemr's build doesn't support lldv while yours has the option and i have been using it for the last weeks. Your lldv implementation is similar to what we would get from a dedicated media box?

Like another user was saying, my gaming pc is next to my home theater. After i stopped using the nvidia shield tube, i came across this thread and now i dont feel the need of buying another media player. But if a dedicated media player will always do a better job regarding lldv on local files i would consider getting one.

Quote from hadesdevls

LibreELEC Hades 1.0 RC4 is out:
https://github.com/hadesdevls/Lib…es/tag/v1.0-rc4

Haha, two new releases on the same day! What a nice surprise! 😄

Big thanks to you too, hadesdevls! It's great to see how much progress you're making with this project, especially with NVIDIA support and FEL playback.

I'll definitely be giving RC4 a try as well, particularly on my PC RTX 5090 and Mini PC with Intel Iris Xe graphics. Really curious to see how everything performs with the latest improvements.

Much respect to both you and CroqueMr for all the time and effort you're putting into these builds. It's great to have two excellent projects to test and enjoy.

Keep up the great work.

Quote from Vertox

Haha, two new releases on the same day! What a nice surprise! 😄

Big thanks to you too, hadesdevls! It's great to see how much progress you're making with this project, especially with NVIDIA support and FEL playback.

I'll definitely be giving RC4 a try as well, particularly on my PC RTX 5090 and Mini PC with Intel Iris Xe graphics. Really curious to see how everything performs with the latest improvements.

Much respect to both you and CroqueMr for all the time and effort you're putting into these builds. It's great to have two excellent projects to test and enjoy.

Keep up the great work.

Vertox thanks a lot! An RTX 5090 and an Iris Xe mini PC are a great pair to try it on, they cover both ends. If anything looks off, tick "Save diagnostics" in the installer and attach the hades-diag folder to an issue; it already filters out personal details.

One heads-up for the mini PC: if its TV takes HDR10+ but not Dolby Vision, leave "Send it as HDR10+" off for now. On Intel at 4K 23.976 it falls back to HDR10, and the fix comes in the next version.

Quote from hadesdevls

Khazar thanks! You won't need to know any Linux for it: once it starts, all you see is Kodi. The easy way is the installer for Windows: on the release page, download LibreELEC-Hades-Installer.exe and the .img.gz (with its .sha256) into the same folder and double-click the installer. Windows warns twice because the installer has no paid signature: "More info" and "Run anyway", then allow it to make changes. Pick your USB SSD, type the word it asks for, and it writes the image and reads it back to check it. If you'd rather prepare the drive on a Mac or another system, any program that writes disk images takes the .img.gz as it is (balenaEtcher, for example).

Then restart the PC, open the boot menu (F8 on ASUS, F11 on MSI and ASRock, F12 on Gigabyte and most laptops) and choose the UEFI entry of the SSD. The first start prepares the drive and restarts once by itself. Secure Boot has to be off. If anything looks wrong, tick "Save diagnostics" in the installer and the logs stay on the drive, ready to attach to an issue. Have fun on Friday.

hcliec001 thanks, much appreciated! If you give RC4 a try, I'd like to hear how it goes on your setup.

Oh nice that sounds pretty straightforward, thanks for info!

Even as an USB OS it should have no problem reading another external NVME SSD on an USB-C port for the video files right?

Quote from hadesdevls

Vertox thanks a lot! An RTX 5090 and an Iris Xe mini PC are a great pair to try it on, they cover both ends. If anything looks off, tick "Save diagnostics" in the installer and attach the hades-diag folder to an issue; it already filters out personal details.

One heads-up for the mini PC: if its TV takes HDR10+ but not Dolby Vision, leave "Send it as HDR10+" off for now. On Intel at 4K 23.976 it falls back to HDR10, and the fix comes in the next version.

Thanks for the heads-up. Just to let you know, my display is an LG G6, so it natively supports Dolby Vision and isn't limited to HDR10+ only. I'll make sure to attach the hades-diag logs if anything acts up. Keep up the awesome work

Just want to be sure I understand things correctly. Neither build currently supports HDR10+ ----> Dolby Vision conversion. Correct? As an LG TV owner I'm interested in that. Not that much content has HDR10+ and no DV but some exists.

Pc vs Oppo, Dune HD, CEAM S922x. FEL and 12 bit.

In case anyone is interested in taking a look.

Dolby vision FEL and 12 bit output

Thanks CroqueMr and hadesdevls for your awesome work on that. One thing that seems to fail on both releases is bluetooth connecting and disconneting all the time. My Nvidia SHIELD 2019 Remote works without configuring or remap anything which is great but it disconnet and connect, my bet is, old drivers, I can provide logs.

Quote from siriusbox

Thanks CroqueMr and hadesdevls for your awesome work on that. One thing that seems to fail on both releases is bluetooth connecting and disconneting all the time. My Nvidia SHIELD 2019 Remote works without configuring or remap anything which is great but it disconnet and connect, my bet is, old drivers, I can provide logs.

siriusbox thanks! Logs would help a lot, and 1.0 RC4 is the version to take them with: it writes to kodi.log why each Bluetooth device disconnected (its key, the radio, the remote itself, or the standby timer), and the diagnostics keep a bluetooth.txt. Tick "Save diagnostics" in the installer when you update, use the remote until it drops a few times, then shut down from Kodi's menu and attach the hades-diag folder to an issue on GitHub. Bluetooth addresses and device names become markers, so nothing personal goes out. What the log says is described here: https://github.com/hadesdevls/Lib…cs/bluetooth.md

I see some regression for some people on my build, very strange I do not have that in my test hardware. I will try to fix that quickly

Quote from DMDreview

Pc vs Oppo, Dune HD, CEAM S922x. FEL and 12 bit.

In case anyone is interested in taking a look.

Dolby vision FEL and 12 bit output

Thanks a lot I will see that carefully