Bug 272216

Summary: [GStreamer] WebKit not using NVidia GPU for video decoding (Epiphany/Gnome Web)
Product: WebKit Reporter: Aniket <aniket.bugzilla>
Component: MediaAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: bugs-noreply, mcatanzaro, philn
Priority: P2    
Version: Other   
Hardware: PC   
OS: Linux   
Attachments:
Description Flags
Screenshots of epiphany using the nvidia gpu for decoding none

Description Aniket 2024-04-05 00:34:41 PDT
Issue Summary :

I have laptop with an integrated AMD Vega 7 GPU and a RTX 3050 Mobile, when watching videos on Youtube or Twitch, I see that epiphany uses the dedicated Nvidia GPU for decoding the video, but the application itself is launched with the integrated graphics. My integrated gpu supports decoding avc and vp9 but not av1. This is causing huge battery drain issues for as is expected. I have also tried launching using dedicated graphics card but I'm not able to play videos at all If I do that. This might be a separate issue because nvidia.

Steps to reproduce : 

1. Open Gnome Web on multi GPU setup (ideally similar to mine)
2. Open any webpage that has video playback (e.g. Youtube, Twitch etc)
3. Play the video and check nvidia-smi or any other monitoring tool to see what GPU is used for decoding

What is actually happening :

It uses the dedicated nvidia graphics to perform the decoding instead of the integrated GPU which the application is launched with.

What is expected to happen :

It should use the integrated graphics or the CPU to perform decoding, unless the app is specifically launched with discrete graphics.

Epiphany details :

* Epiphany version: 46.0
* WebKitGTK version: WebKitGTK 2.44.0, GStreamer 1.22.10
* Distributor: Flathub stable

# System Details Report
---

## Report details
- **Date generated:**                              2024-04-04 16:21:27

## Hardware Information:
- **Hardware Model:**                              Lenovo IdeaPad Gaming 3 15ACH6
- **Memory:**                                      16.0 GiB
- **Processor:**                                   AMD Ryzen™ 5 5600H with Radeon™ Graphics × 12
- **Graphics:**                                    AMD Radeon™ Graphics
- **Graphics 1:**                                  NVIDIA GeForce RTX™ 3050 Laptop GPU
- **Disk Capacity:**                               1.5 TB

## Software Information:
- **Firmware Version:**                            H3CN32WW(V2.02)
- **OS Name:**                                     Fedora Linux 39.20240402.0 (Silverblue-ublue-nvidia)
- **OS Build:**                                    (null)
- **OS Type:**                                     64-bit
- **GNOME Version:**                               45.5
- **Windowing System:**                            Wayland
- **Kernel Version:**                              Linux 6.7.10-200.fc39.x86_64
Comment 1 Aniket 2024-04-05 00:37:43 PDT
Created attachment 470766 [details]
Screenshots of epiphany using the nvidia gpu for decoding
Comment 2 Philippe Normand 2024-04-07 09:56:27 PDT
Please share the webkit://gpu infos.

We'd need a WebKit developer with a similar setup to investigate, I don't use nvidia, sorry :)
Comment 3 Aniket 2024-04-08 10:31:02 PDT
Hi as requested I'm sharing the GPU info. Sorry for the late reply.

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        "Screen geometry": "1536,0 1920x1080",
        "Screen work area": "1536,0 1920x1080",
        "Depth": "24",
        "Bits per color component": "8",
        "DPI": "96",
        "VBlank type": "DRM",
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    }
}
Comment 4 Aniket 2024-04-26 12:15:27 PDT
Hi, any update on this issue?
Comment 5 Philippe Normand 2024-04-27 01:08:33 PDT
(In reply to Aniket from comment #4)
> Hi, any update on this issue?

Please don't post this kind of comments (or +1 comments). There will be an update whenever someone finds the time to work on this.
Comment 6 Aniket 2024-09-17 09:38:05 PDT
Hi,

It's been a while since I reported this issue.

I have tested this scenario (i.e. watch a video on Youtube) and it seems that epiphany is now using the correct GPU for decoding, I don't know exactly which version this was fixed in. 

The version I tested on is :
WebKitGTK 2.44.3
GStreamer 1.24.7