GTX 1080 Ti HEVC Support?

rack04 · Post by **rack04** » Sat Apr 20, 2024 3:05 pm

I recently switched from a GTX 970 to a GTX 1080 Ti and still receive the "GPU decoder: Video type not supported on this device [o]. Exiting..." message. I assumed being a more modern GPU I would get this support, but maybe I was wrong. I read the readme about the limitations:

8. Limitations for HEVC support:

* HEVC requires an nVidia device that supports HEVC, such as the
GTX 750/950/1050 and beyond. If your device does not support HEVC and you attempt
to open an HEVC stream, a popup error message will appear. If you want to
decode HEVC on a card that supports only hybrid decoding, such as the
750/970 etc., you must enable D3D mode and DXVA mode in your INI file.
Cards that support full HW HEVC decode do not require these settings.
GTX 1050 and better is highly recommended.

* Frame/field repeats for HEVC are not yet implemented. If you have an HEVC
stream with repeat flags, please contact me."

Assuming the GTX 1080 Ti doesn't have full support I went to the .ini and couldn't find the DXVA mode to enable. Any ideas?

Post by **Rocky** » Sat Apr 20, 2024 4:01 pm

1080 Ti should be fine. Is this happening in DGIndexNV or DGDecodeNV or both? What is your DGDecNV version and are you sure you are not picking up an older version in your plugins file? What is your nVidia driver version? Finally, can you show a mediainfo dump on the source file? Not all HEVC stream types are supported, e.g., 4:2:2. If you can link a small sample I can test it on my 1080 Ti machine.

DXVA mode no longer exists.

rack04 · Post by **rack04** » Sat Apr 20, 2024 4:19 pm

It's happening with DGIndexNV. I haven't tried with DGDecodeNV. I'm using DGIndexNV 255 (64 bit). Yes, I'm sure I'm not picking up an older version in the plugins file. I'm using driver version 552.12. Just for testing I'm using the HEVC YUV444 10 bit Borderlands trailer from this link.

https://thedigitaltheater.com/borderlands-2024/

I extracted the video stream using gMKVExtractGUI and tried to open the resultant .hevc in DGIndexNV.

General
Unique ID : 135233170422371861621150727047186744928 (0x65BCF613C3C98A7150693D9D7A500660)
Complete name : E:\Users\Justin\Downloads\BorderLands_TLR-1_1920x804_HEVC_444_10bit_DTS-HD_MA_AC3_51-thedigitaltheater.mkv
Format : Matroska
Format version : Version 4
File size : 395 MiB
Duration : 2 min 28 s
Overall bit rate mode : Variable
Overall bit rate : 22.3 Mb/s
Frame rate : 24.000 FPS
Movie name : thedigitaltheater.com - Borderlands - Trailer 1
Encoded date : 2024-04-13 17:33:05 UTC
Writing application : mkvmerge v67.0.0 ('Under Stars') 64-bit
Writing library : libebml v1.4.2 + libmatroska v1.6.4

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Format Range@L4@High
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2 min 28 s
Bit rate : 17.3 Mb/s
Width : 1 920 pixels
Height : 804 pixels
Display aspect ratio : 2.39:1
Frame rate mode : Constant
Frame rate : 24.000 FPS
Color space : YUV
Chroma subsampling : 4:4:4
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.466
Stream size : 306 MiB (77%)
Writing library : x265 3.5+103-b7e8939fa:[Windows][GCC 13.1.0][64 bit] 10bit

Post by **Rocky** » Sat Apr 20, 2024 4:33 pm

Ah, 10-bit 4:4:4. I do support that in DGDecNV and theoretically the 1080 Ti supports it. I'll drag out my 1080 Ti machine from the closet and test it with your stream, which BTW, works fine with our RTX 2080Ti/3090/4090. Are you able to decode the 8-bit 4:2:0 version of the trailer?

rack04 · Post by **rack04** » Sat Apr 20, 2024 4:39 pm

I downloaded the AVC YUV420 8 bit version of the same trailer and encoded it myself to .hevc using x265 and the resultant file opened flawlessly in DGDecNV. Here is the output of my encode that works.

General
Unique ID : 148968946657969401770847600843185695367 (0x70126021C44E6F4411602E3F65CFAA87)
Complete name : E:\Work\BorderLands.mkv
Format : Matroska
Format version : Version 4
File size : 210 MiB
Duration : 2 min 28 s
Overall bit rate mode : Variable
Overall bit rate : 11.9 Mb/s
Frame rate : 24.000 FPS
Encoded date : 2024-04-20 21:38:04 UTC
Writing application : mkvmerge v83.0 ('Circle Of Friends') 64-bit
Writing library : libebml v1.4.5 + libmatroska v1.7.1

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L4@Main
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2 min 28 s
Bit rate : 7 455 kb/s
Width : 1 920 pixels
Height : 804 pixels
Display aspect ratio : 2.39:1
Frame rate mode : Constant
Frame rate : 24.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.201
Stream size : 132 MiB (63%)
Writing library : x265 3.5+119-e112940bb:[Windows][MSVC 1939][64 bit] 10bit

Post by **Rocky** » Sat Apr 20, 2024 5:05 pm

Yeah, the 1080 Ti does not support HEVC 4:4:4. It works fine with HEVC 4:2:0 8-bit and 10-bit (and you've now confirmed that). I can't find reliable information when googling about it. As 1080Ti is reaching end of driver support anyway, if you need HEVC 4:4:4 you'll need to look at a more recent card. 4:4:4 stuff is not that common and currently the DGDecNV filtering goodies do not support 4:4:4.

Good to hear from you, rack04, it's been a while. I hope all is going swimmingly for you.

Post by **Sherman** » Sat Apr 20, 2024 5:27 pm

I thought he died. Thank the Lord!

Guys, I have two radios on the way. And I bought an Eico 368 sweep generator to align them:

The Delco AM/FM on our display rack also needs aligning. If you want I can chronicle my experiences. Just lemme know.

A radio is like a pet or a grampa. You wanna keep 'em goin'. The radio rescue squad.

rack04 · Post by **rack04** » Sun Apr 21, 2024 8:53 am

Rocky wrote: ↑
Sat Apr 20, 2024 5:05 pm
Yeah, the 1080 Ti does not support HEVC 4:4:4. It works fine with HEVC 4:2:0 8-bit and 10-bit (and you've now confirmed that). I can't find reliable information when googling about it. As 1080Ti is reaching end of driver support anyway, if you need HEVC 4:4:4 you'll need to look at a more recent card. 4:4:4 stuff is not that common and currently the DGDecNV filtering goodies do not support 4:4:4.

Good to hear from you, rack04, it's been a while. I hope all is going swimmingly for you.

Doing good thanks. Thank you for your continued support of these programs.

hydra3333 · Post by **hydra3333** » Fri Apr 26, 2024 11:14 pm

Rocky wrote: ↑
Sat Apr 20, 2024 5:05 pm
As 1080Ti is reaching end of driver support anyway

Ah.
I have a 1050Ti ... do you have a link to info on end of driver support ?

Post by **Rocky** » Sat Apr 27, 2024 9:09 am

nVidia doesn't actually say when EOL comes. It tells you if the device is still in support. Then by reviewing the statuses for all the devices you can see that the average EOL is 9-11 years. You have a GP107 (Consumer Pascal) and can look it up here:

https://endoflife.date/nvidia-gpu

hydra3333 · Post by **hydra3333** » Sat Apr 27, 2024 7:43 pm

Thanks for that.
I'll have to start looking for an economical replacement for the 1050Ti, then.
I read a some articles/reviews recently strongly suggesting be really careful what one chooses, apparently some are "tweaked down" substantially more than may be inferred from a model number, eg ?3050?
As always, a trade-off between available $ vs acceptable performance vs "relative value".

Post by **Rocky** » Sat Apr 27, 2024 8:23 pm

Yeah, I'm always amazed at how fast bleeding edge turns to butter knife. Nonetheless I do look forward to the 5000 series.