Bug reports regarding NVENC
Hi, where can I post bug reports about NVENC? As NVENC is part of the driver, is the driver feedback forum the right place? I've already posted this: https://forums.geforce.com/default/topic/1009796/nvenc-wrong-dar-if-image-size-is-720x576/ This was months ago, but the problem persists in the current release. This is a serious issue for me, and it disables me to use NVENC. It affects all applications that use NVENC, like FFMPEG or AviDemux. I know there are other encoders, but I'd like to make use of GPU accelerated encoding. I have so many Gigabytes of Videos in the pipeline waiting for being processed, but if the bug doesn't get fixed... Thanks
Hi,

where can I post bug reports about NVENC? As NVENC is part of the driver, is the driver feedback forum the right place? I've already posted this:
https://forums.geforce.com/default/topic/1009796/nvenc-wrong-dar-if-image-size-is-720x576/
This was months ago, but the problem persists in the current release. This is a serious issue for me, and it disables me to use NVENC. It affects all applications that use NVENC, like FFMPEG or AviDemux. I know there are other encoders, but I'd like to make use of GPU accelerated encoding. I have so many Gigabytes of Videos in the pipeline waiting for being processed, but if the bug doesn't get fixed...

Thanks

#1
Posted 08/14/2017 12:13 PM   
Hey, just referred ManuelG here from the latest release thread, hopefully he can put a bug in with the relevant team. Content of original thread [quote="CryGuyOriginal"]Hi, I was using ffmpeg and it's built-in "h264_nvenc" encoder. I stumbled across a bug that I reported to the ffmpeg bug tracker, but it turned out to be a general problem in the NVENC H.264 encoder, and it is not limited to ffmpeg. This means, it is also reproducable if I encode a video from C++ code utilizing nvenc. Problem description: When encoding a video with an image size of 720x576 while specifying DAR=16:9 (SAR=64:45), the encoder sets the aspect ratio of the encoded video incorrectly to DAR=20:11 (SAR=16:11). Link to ffmpeg bug ticket: https://trac.ffmpeg.org/ticket/6119 System: NVIDIA driver version 382.05, Geforce GTX 750 Ti, Windows 10 Pro x64 It would be really nice if this would be forwared to the Nvidia developer team as I do not want to register at developer.nvidia.com only for reporting this one problem. Thank you [/quote]
Hey, just referred ManuelG here from the latest release thread, hopefully he can put a bug in with the relevant team.

Content of original thread

CryGuyOriginal said:Hi,

I was using ffmpeg and it's built-in "h264_nvenc" encoder. I stumbled across a bug that I reported to the ffmpeg bug tracker, but it turned out to be a general problem in the NVENC H.264 encoder, and it is not limited to ffmpeg. This means, it is also reproducable if I encode a video from C++ code utilizing nvenc.

Problem description:
When encoding a video with an image size of 720x576 while specifying DAR=16:9 (SAR=64:45), the encoder sets the aspect ratio of the encoded video incorrectly to DAR=20:11 (SAR=16:11).

Link to ffmpeg bug ticket:
https://trac.ffmpeg.org/ticket/6119


System: NVIDIA driver version 382.05, Geforce GTX 750 Ti, Windows 10 Pro x64

It would be really nice if this would be forwared to the Nvidia developer team as I do not want to register at developer.nvidia.com only for reporting this one problem.

Thank you



In Memory of Chris "ChrisRay" Arthington, 1982-2010

Specs:
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Case:NZXT Phantom 820, PSU:Seasonic X-850, OS:Windows 7 SP1
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WIP:
CPU:Intel Xeon x5660, Mainboard:Asus Rampage II Gene, Memory:16GB Corsair Vengeance 1600 LP
Video:EVGA Geforce GTX 680+ 4GB, Palit Geforce GTX 550ti
Monitor:Pending, Sound:Pending
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HDD:Pending
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Cooler: ThermalRight True Spirit 120M

#2
Posted 08/14/2017 04:10 PM   
Sora, thank you.
Sora, thank you.

#3
Posted 08/15/2017 06:40 PM   
I don't know what to do. This will probably never be fixed. :(
I don't know what to do. This will probably never be fixed. :(

#4
Posted 10/01/2017 11:23 PM   
[quote="CryGuyOriginal"]I don't know what to do. This will probably never be fixed. :([/quote] had any changes with the r387 drivers?
CryGuyOriginal said:I don't know what to do. This will probably never be fixed. :(


had any changes with the r387 drivers?



In Memory of Chris "ChrisRay" Arthington, 1982-2010

Specs:
CPU:Intel Xeon x5690 @ 4.2Ghz, Mainboard:Asus Rampage III Extreme, Memory:48GB Corsair Vengeance LP 1600
Video:EVGA Geforce GTX 1080 Founders Edition, NVidia Geforce GTX 1060 Founders Edition
Monitor:ROG PG279Q, BenQ BL2211, Sound:Creative XFI Titanium Fatal1ty Pro
SDD:Crucial MX300 275, Crucial MX300 525, Crucial MX200 250
HDD:500GB Spinpoint F3, 1TB WD Black, 2TB WD Red, 1TB WD Black
Case:NZXT Phantom 820, PSU:Seasonic X-850, OS:Windows 7 SP1
Cooler: ThermalRight Silver Arrow IB-E Extreme

WIP:
CPU:Intel Xeon x5660, Mainboard:Asus Rampage II Gene, Memory:16GB Corsair Vengeance 1600 LP
Video:EVGA Geforce GTX 680+ 4GB, Palit Geforce GTX 550ti
Monitor:Pending, Sound:Pending
SDD:Pending
HDD:Pending
Case:NZXT Guardian 921RB, PSU:Corsair 620HX, OS:Windows 7 SP1
Cooler: ThermalRight True Spirit 120M

#5
Posted 10/16/2017 11:36 AM   
[quote="Sora"]had any changes with the r387 drivers?[/quote] I'm terribly sorry that I did not see your reply before! Haven't been here for a while, and I don't find where to enable mail notifications for topics here - if available at all. However, I've just subscribed to the RSS feed and won't miss anything anymore. Thanks for asking. No, the problem is still not fixed. If I force DAR=16:9, it still sets DAR 20:11. This is a deviation of 45:44 or ~2.3%, so the size of the displayed image is 1047x576 instead of correctly 1024x576.
Sora said:had any changes with the r387 drivers?

I'm terribly sorry that I did not see your reply before! Haven't been here for a while, and I don't find where to enable mail notifications for topics here - if available at all. However, I've just subscribed to the RSS feed and won't miss anything anymore.

Thanks for asking. No, the problem is still not fixed. If I force DAR=16:9, it still sets DAR 20:11. This is a deviation of 45:44 or ~2.3%, so the size of the displayed image is 1047x576 instead of correctly 1024x576.

#6
Posted 11/27/2017 11:35 PM   
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