Besides the AMD crasher, I wondered why the dev version of Showtime, #GNOME's power-efficient video player in incubation, sometimes still refused to launch; turns out it's randomly crashing with a segfault on startup for another reason.

After jumping through hoops to get a backtrace (#Python in #Flatpak makes things somewhat harder to debug), it turns out that #GStreamer is not the culprit. Presumably, it may be a bug in #GTK or somewhere else in the stack. Details here: gitlab.gnome.org/GNOME/Incubat…

Showtime Nightly randomly segfaults on startup (even with no video) (#158) · Issues · GNOME / Incubator / Showtime · GitLab

Testing the latest nightly flatpak version on my desktop workstation with discrete open source AMD graphics (and another testbench with onboard AMD graphics), I realized one of the...

^GitLab

For those encountering random video playback application crash heisenbugs on the open source #AMDgpu #Mesa drivers on #Linux (thankfully, with #Wayland this no longer crashes the entire system), with the suspicious "CS has been rejected" error, here is the bug I reported upstream: gitlab.freedesktop.org/mesa/me…

The theory is that the DRM's implementation of AMD's Unified Video Decoder does not properly keep track of #Flatpak process IDs. A patch is underway.

#opensource #AMD #Radeon #GStreamer

AMD Radeon R9 270 randomly causes video playback applications to crash with "amdgpu: The CS has been rejected" (#12575) · Issues · Mesa / mesa · GitLab

Brief summary of the problem: This has been an unpredictable, somewhat random occurrence for me on Fedora 40 and Fedora 41....

^GitLab

New writeup up! #GStreamer + #PipeWire: A Todo List

asymptotic.io/blog/gstreamer-p…

#linux #audio #linuxaudio

Also, happy 25th birthday to us! 🎊🎉🎊🎉

#linux #multimedia #gstreamer #gstconf2024

📢 The GStreamer Conference 2024 schedule is now up!

gstreamer.freedesktop.org/conf…

See you next week in Montréal!

PS: don't forget to register

#gstreamer #linux #multimedia

🪞 Introducing Mirror Hall, an app to turn any Linux devices into a second wireless monitor!

We use semi-custom P2P screen sharing optimized for low latency. Only Mutter-based DEs are currently supported as *senders*, whereas all DEs work as receivers.

This is our first unstable release, sp please be kind and report issues. If you are an #ARM user, we would love your help testing the gstreamer pipeline on new phones!

notes.nokun.eu/post/2024-09-22…

#linux #opensource #foss #gnome #apps #gstreamer

Thanks to @slomo the #gstreamer gtk4-paintable-sink just got support for video rotations. This is nice for video apps, making playback of video recorded on phones (portrait mode) more easy or faster (avoiding a copy compared to using a dedicated gst videoflip element).

The change is even better for Snapshot, the #gnome camera app: it uses the sink for its viewfinder and avoiding additional copies here has quite an impact on #mobilelinux devices.

gitlab.freedesktop.org/gstream…

#gtk #rustlang

gtk4: Add support for rotations / flipping (!1590) · Merge requests · GStreamer / gst-plugins-rs · GitLab

Fixes #284

^GitLab

I'm quite happy how upcoming performance improvements for #gnome Snapshot and #libcamera are shaping up. This is how things are now running for me on a #librem5:

#gstreamer #gtk #postmarketos #linuxmobile #mobilelinux

If you use #pipewire for cameras you can now (in the upcoming 1.2) enforce specific rotations via node rules. This is useful on devices with rotated cameras that don't use a DT and #libcamera or for testing (e.g. to find out the correct rotation of a phone camera). The rotation is respected by an increasing number of apps, notably #gstreamer based ones (like Snapshot - but not Cheese) and #firefox (if you enable PW cameras via `media.webrtc.camera.allow-pipewire`).

See gitlab.freedesktop.org/pipewir…

Webcam is upside down when pipewire is running. (#4034) · Issues · PipeWire / pipewire · GitLab

PipeWire version (pipewire --version): 1.0.7. Distribution and distribution version (PRETTY_NAME from /etc/os-release): Ubuntu Oracular Oriole (development branch). Desktop Environment: Sway Wayland...

^GitLab

💻 Last week I had a great time at the #GStreamer #hackfest ! I decided to take the opportunity there to hack on the #PipeWire GStreamer elements and here's my story: gkiagia.gr/2024-06-04-hacking-…

#GstHackfest @gstreamer @pipewire

Just want to quickly share with #linuxmobile folks that the new #libcamera softwareISP does indeed work with the #librem5 - and with a #PipeWire + #GStreamer pipeline. Here's a first image running Warp (from Flathub).

There's still some stuff to iron out to make this work reliably and ship to users - but things are falling into place.

Thanks to @slomo the #gstreamer #gtk gtk4paintablesink just got support for DMABuf (and thus Wayland/KMS) passthrough

gitlab.freedesktop.org/gstream…

This will allow to make video playback in various apps much faster. And, if everything works out, allow the same for Camera viewfinders in apps like #gnome camera / snapshot 🤞

gtk4: Implement support for directly importing dmabufs (!1547) · Merge requests · GStreamer / gst-plugins-rs · GitLab

Fixes

^GitLab

Friends of energy efficiency - the Light Video 0.1.0 #Flathub update is out, build with #gtk4 4.14 and #GStreamer 1.24.1.

This should be the first app targeting the #linux / FDO desktop enabling Wayland video offloading (think zero-copy playback) by default. In many cases (actually more than I expected) this can improve battery lifetime - and on low-end devices even playback performance - significantly.

flathub.org/apps/org.sigxcpu.L…

Time to let the cat out of the bag.

I've been working on a new app to use your #Linux phones and tablets as secondary wireless "side displays" (not mirrors). This is based on #GStreamer, x264, #Mutter APIs, and low-latency UDP streaming, and will be designed to work on both ARM and Intel, regardless of hardware acceleration support. (Testing on a #librem5)

This is still at an early stage, and will take some time to become usable. Thoughts and feedback?

#gnome #linuxphones #apps #mobilelinux

The new GStreamer 1.24 release is also the first that has a Rust component as part of core, in addition to all the plugins that were already part of previous releases.

gstreamer.freedesktop.org/rele…

floss.social/@gstreamer/112041…

#GStreamer #RustLang #Rust

My #FOSDEM presentation about #Wayland video offloading is online. If you are interested, you can watch it here: fosdem.org/2024/schedule/event…

I'm happy about feedback, both on the technical side as well as how I can improve doing presentations :)

#FOSDEM2024 #GNOME #gtk #Collabora #GStreamer #sway #kde #Chromium #mpv

I'll also be at #fosdem and do a short talk about #Wayland video offloading related stuff I've been posting about, featuring #gtk4, #gstreamer, #Chromium #gnomeshell and #weston

fosdem.org/2024/schedule/event…

See you there!

#Collabora #fosdem2024 #gnome #gnomeonrails

FOSDEM 2024 - The state of video offloading on the Linux Desktop

^fosdem.org

Update regarding #wayland zero-copy video playback (using hardware planes): with a few small patches it works with #Chromium, both with #vaapi (Intel/AMD) and #v4l2 stateless.

Here a short video using a #rk3399 - the #PINE64 #PinebookPro - playing a 4k 60fps video - only possible with hardware plane offloading. Playback is *almost* smooth already (~50fps), the goal is to catch up with #GStreamer where we get stable 60.

I hope this will all get upstreamed in the coming months.

GStreamer Conference 2023 - the Call for Papers is open!

Submit your talk proposals now!

gstreamer.freedesktop.org/conf…

See you 25-26 September in A Coruña, Spain!

#GStreamer #Conference #GstConf #opensource #FreeSoftware #Multimedia

This is @halfmexican; GNOME Outreachy student excited that their effort to make a modern and sandboxed Camera demo for Workbench has paid off 🛠️

Well done! 🎉

Thanks @philn and @slomo for your help!

#GNOME #Outreachy #development #students #GStreamer #PipeWire #Flatpak #freedesktop #libcamera #GTK

I've spent a good part of my weekend working on upgrading the GStreamer Rust bindings on Servo. The presentation by Martin Robinson from @igalia at @rustnl was a real inspiration.

github.com/servo/media/pull/39…

I'm delighted with the revival of Servo and I believe it has a bright future.

#ServoBrowser #RustLang #GStreamer

Upgrade GStreamer dependencies by rafaelcaricio · Pull Request #393 · servo/media

I've upgraded the version of the GStreamer Rust bindings. I've tried to make the minimal possible changes to the code, keeping all previous logic and behavior. Please let me know if I've missed any...

^GitHub

Over the Easter holidays I experimented a bit with building Rust code with meson instead of cargo.

Specifically I tried building a GStreamer plugin with a few dozen Rust dependencies, but the same applies in a similar way to GTK/GNOME applications or literally anything else.

A write-up of the results with a lot of details can be found here: coaxion.net/blog/2023/04/build…

#RustLang #GStreamer #GNOME #GTK #meson #cargo #BuildSystems

✨ GStreamer Rust bindings 0.20 and Rust plugins 0.10 release is out

This release features the addition of a few convenience APIs, the addition of bindings for some minor APIs and a lot of internal changes to improve performance and code generation.

gstreamer.freedesktop.org/news…

#GStreamer #Rust #RustLang

As part of the optimizations, there are a lot fewer temporary allocations now, e.g. for NUL-terminated strings.

Also, in addition to better performance, the code generation improvements also reduce the binary size considerably.

Some GStreamer plugins saw reductions of 15-20% 🥳

#GStreamer #Rust #RustLang

A year ago I started working on supporting GL Textures in the rusty @GStreamer Paintable @GTK Sink and now its merged 🎉
This should dramatically reduce the CPU usage consumed and allow for zero-copy rendering when used with hardware decoders.
gitlab.freedesktop.org/gstream…

#gstreamer #gtk #gnome #rust

video/gtk4: Implement support for GLTextures when possible. (!588) · Merge requests · GStreamer / gst-plugins-rs · GitLab

cc @slomo @bilelmoussaoui

^GitLab

GObject subclassing in Rust for extending GTK+ & GStreamer youtube.com/watch?v=TSf3rVyv7c…

#GTK #GStreamer

GObject subclassing in Rust for extending GTK+ & GStreamer Or: How to safely implement subclassing …

GObject subclassing in Rust for extending GTK+ & GStreamer Or: How to safely implement subclassing in Rust while making use of a C libraryby Sebastian DrögeA...

^YouTube