Unsupported buffer format 842094158 (NV12)

[Bram Stolk]

This is with 107.0.5304.121-hwacc from latest/candidate/hwacc on Ubuntu 22.10 Wayland.

When playing a h264 video, or a youtube video, I get:

```
$ snap info chromium | grep installed
installed: 107.0.5304.121-hwacc (2224) 171MB -
$ chromium ~/sample.mp4
Gtk-Message: 09:25:06.701: Not loading module "atk-bridge": The functionality is provided by GTK natively. Please try to not load it.
[15876:15876:1216/092506.880657:ERROR:gpu_init.cc(537)] Passthrough is not supported, GL is egl, ANGLE is
[15747:15837:1216/092506.908136:ERROR:top_sites_backend.cc(79)] Failed to initialize database.
[15747:15747:1216/092507.059802:ERROR:wayland_event_watcher.cc(36)] libwayland: [destroyed object]: error 7: failed to import supplied dmabufs: Unsupported buffer format 842094158

Trace/breakpoint trap (core dumped)
```

Test video: https://test-videos.co.uk/vids/bigbuckbunny/mp4/h264/1080/Big_Buck_Bunny_1080_10s_30MB.mp4

I will try other hwacc versions and a non-hwacc version to see if they behave differently.

OS: Ubuntu 22.10

Desktop: Wayland

GPU: Intel AlderLake-S GT1

[Bram Stolk (b-stolk)]

108.0.5359.124 from latest/candidate plays video without crashing.

109.0.5414.36-hwacc from latest/beta/hwacc has the same crash.

Adding --ozone-platform=x11 stops the crash.

This also fixes it:
CHROMIUM_FLAGS="--disable-features=UseChromeOSDirectVideoDecoder" chromium ~/sample.mp4

[Bram Stolk (b-stolk)]

https://code.launchpad.net/~b-stolk/chromium-browser/+git/snap-from-source/+merge/435082

[Bram Stolk (b-stolk)]

Ugh, this may need revisiting. Even though it stops the crash, it also seems to stop hardware decode support for me. I would have sworn I tested with intel_gpu_top, but on the current edge build, I see no HW acceleration anymore.

[Daniel van Vugt (vanvugt)]

I'm told Chromium already worked around this, but for the record, proper NV12 support is in progress at https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2191