VCL bug ? : it crashes when I open a video using VDPAU video decoder.

ZioMario

ZioMario

Hello.

I stored my videos on a disk that has ZFS as a fs. When I try to open a video with vlc as a normal user,vlc closes after some seconds and I see this message on the terminal :

Code: 
VLC media player 3.0.20 Vetinari (revision 963fa2817415)
[0000000814c66ae0] avcodec decoder: Using NVIDIA VDPAU Driver Shared Library  535.104.05 Sat Aug 19 00:39:34 UTC 2023 for hardware decoding

and VLC produces a core file because it crashes. It seems to me that there could be a bug in VLC,because I've installed correctly the nvidia driver on my system (FreeBSD 14.0-RELEASE) :

Code: 
$ nvidia-smi

+---------------------------------------------------------------------------------------+
| NVIDIA-SMI 535.104.05             Driver Version: 535.104.05   CUDA Version: N/A      |
|-----------------------------------------+----------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |         Memory-Usage | GPU-Util  Compute M. |
|  | | MIG M. |
|=========================================+======================+======================|
|   0  NVIDIA GeForce GTX 1060 3GB    Off | 00000000:01:00.0  On |                  N/A |
| 57%   43C    P0              30W / 120W |    431MiB /  3072MiB |      0%      Default |
|  | | N/A |
+-----------------------------------------+----------------------+----------------------+
                            
+---------------------------------------------------------------------------------------+
| Processes:                                |
|  GPU   GI   CI        PID   Type   Process name                            GPU Memory |
| ID ID                               Usage |
|=======================================================================================|
|    0   N/A  N/A      7518      G   /usr/local/libexec/Xorg                     172MiB |
| 0 N/A N/A 7609 G xfwm4  2MiB |
| 0 N/A N/A 8219 G firefox  253MiB |
+---------------------------------------------------------------------------------------+

I don't know if it is correct,because VLC does not crash if I choose "VA-API video decoder",but it does if I use "VDPAU" video decoder or automatic.

I would like to know if there is a problem on VLC or in my system. Thanks.
 
Sorry Sir,

it was a typo. I'm using RELEASE :

Code: 
# uname -a
FreeBSD marietto 14.0-RELEASE-p3 FreeBSD 14.0-RELEASE-p3 #0: Mon Dec 11 04:56:01 UTC 2023     
root@amd64-builder.daemonology.net:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
 
Hi,

I had the same problem the last few days on FreeBSD 13.2 with a GTX 1070 ti: segmentation fault when hardware acceleration (VDPAU) is enabled. I thought the same, this is likely a bug in VLC.
 
julp said:
Hi,

I had the same problem the last few days on FreeBSD 13.2 with a GTX 1070 ti: segmentation fault when hardware acceleration (VDPAU) is enabled.
Click to expand...

you had ? do you still have it even today or you solved it in some way ?
 
Why you don't set the hardware acceleration to VA-API video decoder instead of disabling it ? It works fine for me...
 
I plan to report this bug on the nvidia and on the VLC forums. Anyway,someone can explain if using VA-API instead of VDPAU produces a performance loss ?
 
ziomario said:
I would like to know if there is a problem on VLC or in my system.
Click to expand...
Can you try using a different video player so we know whether it's VLC's issue or not? multimedia/mpv is available and easy to use:
mpv ./video.ext
ziomario said:
someone can explain if using VA-API instead of VDPAU produces a performance loss ?
Click to expand...
I don't really know that much about this kind of thing, but from what I've read, apparently the proprietary Linux Nvidia drivers implement VDPAU, so VA-API is not directly usable (just uses a wrapper for VDPAU). This would hypothetically mean worse performance using VA-API. Of course, it's best to just experiment and find which yields better results (if you get VDPAU working).
 
jmos said:
The actual nvidia-driver port update solved the VLC problem for me.
Click to expand...

My machine needs nvidia-driver-470 which doesn't yet have an update in the ports tree so I thought I'd update it "manually" to see if that did the trick (see https://download.nvidia.com/XFree86/FreeBSD-x86_64/ for available versions).

Code: 
 $ uname -a
FreeBSD zoo-FreeBSD.home 14.0-RELEASE-p3 FreeBSD 14.0-RELEASE-p3 #0: Mon Dec 11 04:56:01 UTC 2023

Code: 
$ cd /usr/ports/x11/nvidia-driver-470
# pkg delete nvidia-driver-470
# make DISTVERSION=470.223.02 -DNO_CHECKSUM install clean

This is the same nvidia driver version I have on Debian Sid and Void. Unfortunately this doesn't solve the problem for me so for the moment I still have to use XVideo output (XCB) instead of Automatic or VDPAU. It was working ok until fairly recently, but I can't remember which pkg update(s) broke it.
 
ziomario said:
I don't see the user jmos anymore
Click to expand...
He still there?

forums.FreeBSD.org

VCL bug ? : it crashes when I open a video using VDPAU video decoder.

Hello. I stored my videos on a disk that has ZFS as a fs. When I try to open a video with vlc as a normal user,vlc closes after some seconds and I see this message on the terminal : VLC media player 3.0.20 Vetinari (revision 963fa2817415) [0000000814c66ae0] avcodec decoder: Using NVIDIA VDPAU...
forums.FreeBSD.org forums.FreeBSD.org

ziomario said:
Has that user been removed ?
Click to expand...
Account is still active. Last seen on Wednesday (2 Jan. 2024).
 
Well it seems to be working again now after today's updates from the latest branch of the pkg repo:

Code: 
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: dbus upgraded: 1.14.10_1,1 -> 1.14.10_2,1
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: libxkbcommon upgraded: 1.6.0 -> 1.6.0_1
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: ffmpeg upgraded: 6.1_5,1 -> 6.1.1,1
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: acpi_call upgraded: 1.0.1_1 -> 1.0.1_2
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: sudo upgraded: 1.9.15p4 -> 1.9.15p5
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: nvidia-settings upgraded: 470.86_1 -> 535.146.02
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: yt-dlp upgraded: 2023.11.16_1 -> 2023.12.30_1
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: sccache-overlay upgraded: 0.2.15_22 -> 0.2.15_23
Jan  9 01:37:23 zoo-FreeBSD pkg[35657]: xterm upgraded: 388 -> 389
.

Of these, I'm assuming it must have been the ffmpeg update that did it.
 
I'm not sure that it is caused by ffmpeg,because I have upgraded it to your version and I still have the problem.
 
ziomario said:
I'm not sure that it is caused by ffmpeg,because I have upgraded it to your version and I still have the problem.
Click to expand...

Those were all binary updates via pkg (therefore default config options). One difference from you is that I'm using nvidia-driver-470-470.223.02. Maybe that is relevant?

Oh and I set the video output back to Automatic. I just checked it still works if I set it explictly to VDPAU (not quite sure if that's what Automatic uses).

And (just to clarify), before the pkg updates I listed in my previous post it wasn't working for me and now it is.

I should also maybe add that when I built nvidia-driver-470-470.223.02, as detailed above, I turned off Linux compatibility support because I don't need it. Would be surprised if that had any relevance though.

Another minor addendum:

Code: 
 $ pkg info -a | grep vlc
vlc-3.0.20_3,4               Qt based multimedia player and streaming server
 
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