#Firefox users with older computers (at least 7-10 years old), if you have a minute could you check something for me? Go into about:support and scroll down to the "Codec Support Information" table. I'd like to know if it shows hardware decoding as being supported for the HEVC codec (it shouldn't). Also let me know what OS are you on.
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@gabrielesvelto I have a MacBook Pro from 2013 around. It has no HEVC hardware decoding. Firefox agrees.
Windows 10: no HEVC support
macOS 11.7.10: only software decoding for HEVC
I updated Firefox before checking, version 141.0.
Windows 10: no HEVC support
macOS 11.7.10: only software decoding for HEVC
I updated Firefox before checking, version 141.0.
@gabrielesvelto Firefox 141.0, Windows 10 22H2, HEVC unsupported in all four columns, Intel i7-3667U with HD Graphics 4000.
@gabrielesvelto I use two computers :
_ One is 6 years old, and the OS on is W10 :
Codec Name : HEVC;
Software Decoding : Not Supported;
Hardware Decoding : Supported;
Software Encoding : Not Supported;
Hardware Encoding : Not Supported;
_ One is 6 years old, and the OS on is W10 :
Codec Name : HEVC;
Software Decoding : Not Supported;
Hardware Decoding : Supported;
Software Encoding : Not Supported;
Hardware Encoding : Not Supported;
_ The other one is 8 years old, is on Debian Jessie, but it doesn't even provide this data lol.
@gabrielesvelto Unsupported here with a ThinkPad L440 (Haswell Pentium inside) and Ubuntu 24.04.2 LTS (Snap version of Firefox 141).
@gabrielesvelto unsupported, Firefox on Ubuntu 22.04, old Thinkpad from 2015
@gabrielesvelto asus laptop 2012, not supported
Linux fedora42
@gabrielesvelto So the answer is NO see screenshot.
Linux shaar 6.14.11-300.fc42.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Jun 10 16:24:16 UTC 2025 x86_64 GNU/Linux
ludovic@shaar:~$ cat /etc/redhat-release
Fedora release 42 (Adams)
ludovic@shaar:~$ sudo dmidecode -t system
[sudo] Mot de passe de ludovic :
# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Handle 0x000C, DMI type 1, 27 bytes
System Information
Manufacturer: LENOVO
Product Name: 20KHCTO1WW
Version: ThinkPad X1 Carbon 6th
SKU Number: LENOVO_MT_20KH_BU_Think_FM_ThinkPad X1 Carbon 6th
Family: ThinkPad X1 Carbon 6th
@gabrielesvelto Thinkpad X230 tablet; Debian Sid; Firefox 140.0.1-1
@gabrielesvelto 'unsupported" (both columns) on Debian 11
@gabrielesvelto
My Lenovo Thinkpad E585 (model 2018) supports it thanks to the APU Ryzen 2700U. Ut actually runs on Windows 10 and will run later on any Linux distro I'll choose.
My Lenovo Thinkpad E585 (model 2018) supports it thanks to the APU Ryzen 2700U. Ut actually runs on Windows 10 and will run later on any Linux distro I'll choose.
@gabrielesvelto I have it available
Lenovo T590 of 2019
Linux (debian Trixie)
Graphical chipset : Intel integrated, lspci shows
00:02.0 VGA compatible controller: Intel Corporation WhiskeyLake-U GT2 [UHD Graphics 620]
Lenovo T590 of 2019
Linux (debian Trixie)
Graphical chipset : Intel integrated, lspci shows
00:02.0 VGA compatible controller: Intel Corporation WhiskeyLake-U GT2 [UHD Graphics 620]
@gabrielesvelto it is marked as supported (Debian 12.11, Intel(R) Core(TM) i5-7200U CPU)
@gabrielesvelto it does not on an Intel Q8200 Core 2 Quad machine on Linux Mint 21.3.
@gabrielesvelto HEVC Hardware Decoding shows up as Supported in Firefox on 2017 Razer Blade Pro FullHD (i7 7700HQ + GTX1060) running PopOS! 22.04
@gabrielesvelto Hardware decoding is unsupported on my Intel i7 3770 (also works as a GPU). I'm on LMDE 6.
@gabrielesvelto Core i7-6700K with Fedora 42: Unsupported.
@gabrielesvelto My system is about 7 years old (bought in early 2018) and shows hardware decoding supported. Linux, Fedora 41, i7-8700K CPU using the CPU's onboard/integrated GPU (on a 4k HiDPI display). Hardware encoding is also listed as supported.
(I use an eccentric desktop without an X compositor, so maybe something is going on there.)
@gabrielesvelto i7-2640M / FreeBSD, unsupported.
@gabrielesvelto on Ubuntu 24.04 with Firefox 128.13.0 it's showing unsupported for both software & hardware decoding on a Dell Precision 7510 from 2016.
@gabrielesvelto
ThinkPad T61 with Fedora 41 Workstation shows HEVC h/w decoding is Unsupported.
@gabrielesvelto
I remember that on windows if you have the hevc codec(the for oem one) then it'll say hw supported even if it's sw only on your hw. I'll double check later to confirm. Wait no that might've been for the av1 codec not the hevc. Or maybe both. I'll check to see
@DenJohn this is interesting, did you find something out?
@gabrielesvelto Since my current pc does have h265 hw decoding I'd have to dig up my old pc to check.
But there are two things I can say for sure. First, on hardware that does have the hevc oem windows codec and has hw h265 decode, h265 shows up as hw decode supported but sw decode unsupported, which seems weird because I thought that windows codec also includes cpu decode in case there's no hw decode.
But there are two things I can say for sure. First, on hardware that does have the hevc oem windows codec and has hw h265 decode, h265 shows up as hw decode supported but sw decode unsupported, which seems weird because I thought that windows codec also includes cpu decode in case there's no hw decode.
@gabrielesvelto
The second thing is that if you install the av1 codec from the ms store then av1 will show up as sw and hw decode supported whether you actually have av1 hw decode support or not.(I don't)
The second thing is that if you install the av1 codec from the ms store then av1 will show up as sw and hw decode supported whether you actually have av1 hw decode support or not.(I don't)
@gabrielesvelto HEVC is listed as "Unsupported" for all 4: Software Decoding, Hardware Decoding, Software Encoding, Hardware Encoding
Linux 6.15.8-200.fc42.x86_64
Intel(R) Core(TM) i7-7600U CPU @ 2.80GHz
Firefox 141.0 (64-bit)
@gabrielesvelto end 2015 6th gen i7-6700HQ on Arch, Firefox 142b4 shows both HEVC decoding and encoding supported. mpv typically has no trouble decoding even 10bit media, I rarely use encoding consciously.
@gabrielesvelto I'm using an optiplex from ~2013 (9020) and it shows hardware decoding as unsupported.
Hope that helps, let me know if I can do more!
@gabrielesvelto Unsupported on my Dell Precision T1700 (circa 2014, maybe? Yardsaled it from work) running Win11 (Fx release 141.0)
@gabrielesvelto
Supported. Windows 10 Pro
Supported. Windows 10 Pro
@Bwaz what graphics card does your machine have?
@gabrielesvelto
It's a Dell Laptop Latitude E7450, graphics is builtin Intel HD Graphics 5500,128MB
It's a Dell Laptop Latitude E7450, graphics is builtin Intel HD Graphics 5500,128MB
@gabrielesvelto Fedora Linux and HEVC Unsupported for both(hw and software) System: x230 (intel 3.th gen core i5 ). Wishing you a great day !
@gabrielesvelto well, it's a _weird_ one I'll admit to it.
this is a MacPro5,1 - so no later than 2013 when they were discontinued.
however, there is a Radeon RX6600 in it...
HEVC Supported for SW Decode, HW Decode, HW Encode per the codec table.
SW Encode is the only thing not supported.
Running Fedora 42, Firefox 141.0
@gabrielesvelto Unsupported on 2011 MacBook Pro running Debian 12. Only h264. I have the built in but broken Radeon chip disabled.
@gabrielesvelto Firefox 141.0, Ryzen 5 1600 + AMD Radeon RX 460, Fedora 42 KDE
@gabrielesvelto
I checked another system:
Asus laptop S200 - about 11 years old.
Runs Linux Mint.
HEVC SUPPORTED - but only for "Software Decoding".
@gabrielesvelto amd ryzen 5 2600x, Unsupported
arch btw
@gabrielesvelto No HEVC for me: Firefox 141.0, Windows 10, Intel i5 4590 CPU, GPU is Intel HD 4600
@gabrielesvelto
"Unsupported" across the board.
I dunno precisely how old this system is, (I obtained it free, 2nd hand) but it has a Gigabite MB than runs a really ancient BIOS.
@gabrielesvelto unsupported
Clevo Notebook W54_55SU1,SUW (bought new in 2016)
Linux 6.8.0-63-generic
@gabrielesvelto
Reporting in:
i5-4670K (4th gen) has Quick Sync, but not HEVC support (docs says 7th gen and on should have it)
FF Shows only Software Decoding supported.
Reporting in:
i5-4670K (4th gen) has Quick Sync, but not HEVC support (docs says 7th gen and on should have it)
FF Shows only Software Decoding supported.
@gabrielesvelto it shows unsupported for me. Mid 2015 macbook pro
@aerobender thanks, I assume you're running macOS, correct?
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