BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Why is MPEG-TS so hard? DTSTART;VALUE=DATE-TIME:20261010T143000Z DTEND;VALUE=DATE-TIME:20261010T150000Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-624@indico.freedesktop.org DESCRIPTION:Speakers: Jan Schmidt (Centricular Ltd)\nGStreamer has been ab le to produce MPEG-TS for decades\, but the MPEG-TS it produces isn't alwa ys great. Why is that? What would it take to fix?\n\nhttps://indico.freede sktop.org/event/14/contributions/624/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/624/ END:VEVENT BEGIN:VEVENT SUMMARY:GstVA and GstVulkan updates DTSTART;VALUE=DATE-TIME:20261011T094500Z DTEND;VALUE=DATE-TIME:20261011T100500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-584@indico.freedesktop.org DESCRIPTION:Speakers: Victor Manuel Jáquez Leal (Igalia)\nThe usual talk about the recent developments on both GstVA and GstVulkan\n\nhttps://indic o.freedesktop.org/event/14/contributions/584/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/584/ END:VEVENT BEGIN:VEVENT SUMMARY:librice: challenges with sans-io DTSTART;VALUE=DATE-TIME:20261011T123500Z DTEND;VALUE=DATE-TIME:20261011T130500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-595@indico.freedesktop.org DESCRIPTION:Speakers: Matthew Waters (Centricular)\nICE (Internet Connecti vity Establishment) is a widely used standard for NAT (Network Address Tra nslation) hole punching used extensively within the realm of WebRTC and in some cases SIP.\n\nlibrice is a sans-IO library that handles the intricac ies of ICE and has some new tricks up its sleeve. We will discuss the curr ent state of librice\, the work in progress and design decisions that have been made and where we see ourselves looking into the future.\n\nhttps:// indico.freedesktop.org/event/14/contributions/595/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/595/ END:VEVENT BEGIN:VEVENT SUMMARY:How GStreamer is used in WebKit DTSTART;VALUE=DATE-TIME:20261011T074500Z DTEND;VALUE=DATE-TIME:20261011T082500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-583@indico.freedesktop.org DESCRIPTION:Speakers: Enrique Ocaña González (Igalia)\nThis presentation covers some of the different ways in which GStreamer is used inside WebKi tGTK and WPE to implement the multimedia features of the web engine. Commo n design patterns in WebKit will be introduced\, as a basis to understand the design of the modules to be presented next: Regular and Media Source E xtensions video playback\, Encrypted Media Extensions using the Thunder/Op enCDM framework and WebAudio. A less detailed overview of MediaStream and WebRTC will be presented at the end.\n\nhttps://indico.freedesktop.org/eve nt/14/contributions/583/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/583/ END:VEVENT BEGIN:VEVENT SUMMARY:Multithreading in GStreamer: how do flushes work DTSTART;VALUE=DATE-TIME:20261010T082000Z DTEND;VALUE=DATE-TIME:20261010T090500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-585@indico.freedesktop.org DESCRIPTION:Speakers: Alicia Boya García (Igalia)\nThis talk gives an ove rview of the synchronization primitives used in GStreamer 1.0 pipelines: p ad tasks\, refcounting\, push and pull call chains\, serialized flow...\n\ nThen it uses these basic concepts to explain the special case of flushes: how they're supposed to work and why.\n\nhttps://indico.freedesktop.org/e vent/14/contributions/585/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/585/ END:VEVENT BEGIN:VEVENT SUMMARY:Gst-Audit: A graphical way to instrument your pipeline DTSTART;VALUE=DATE-TIME:20261010T100000Z DTEND;VALUE=DATE-TIME:20261010T103000Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-591@indico.freedesktop.org DESCRIPTION:Speakers: Jorge Zapata ()\nThe purpose of this talk to show an d demonstrate the use of Gst-Audit on a running Gstreamer Pipeline and exp lain its architecture\, from the binary injection to the React frontend pa ssing through the REST endpoint and JS bindings.\n\nhttps://indico.freedes ktop.org/event/14/contributions/591/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/591/ END:VEVENT BEGIN:VEVENT SUMMARY:GStreamer 20 years of fun DTSTART;VALUE=DATE-TIME:20261010T121500Z DTEND;VALUE=DATE-TIME:20261010T124500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-582@indico.freedesktop.org DESCRIPTION:Speakers: Stéphane Cerveau (Igalia)\nA personal retrospective on two decades of building with GStreamer — from the first tool I ever wrote\, through the toolbox of utilities that grew around it\, to the debu gging tricks learned the hard way. Ends with a look at recent work\, inclu ding GstPipelineStudio (GPS).\n\nhttps://indico.freedesktop.org/event/14/c ontributions/582/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/582/ END:VEVENT BEGIN:VEVENT SUMMARY:Dolby/AC-4: The plan to support the Dolby ecosystem in GStreamer DTSTART;VALUE=DATE-TIME:20261010T125000Z DTEND;VALUE=DATE-TIME:20261010T131000Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-608@indico.freedesktop.org DESCRIPTION:Speakers: Pablo García (Fluendo)\, Maciej Sabiniok ()\nThis p resentation will explore Fluendo's ongoing efforts to provide support for the Dolby audio ecosystem within GStreamer. We will start with an overview of Fluendo's new proprietary Dolby decoders (AC-4 and EAC3). Next\, we wi ll delve into the open-source aspect of the work\, detailing Fluendo's rec ent OSS contributions. Finally\, the session will conclude with an outlook on the future\, presenting Fluendo's plans for open-source and proprietar y developments.\n\nhttps://indico.freedesktop.org/event/14/contributions/6 08/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/608/ END:VEVENT BEGIN:VEVENT SUMMARY:Building a Ringbuffer - Going in circles with V4L2 and PipeWire DTSTART;VALUE=DATE-TIME:20261011T102000Z DTEND;VALUE=DATE-TIME:20261011T105000Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-609@indico.freedesktop.org DESCRIPTION:Speakers: Simon Himmelbauer ()\nWe implemented a ringbuffer el ement to keep hundreds of video frames in a GStreamer pipeline and only em it buffers to the sink when requested. While its implementation was straig htforward\, we found out that other components\, such as Video4Linux2 and PipeWire\, are not primarily designed for keeping large amount of frames i n memory for extended periods.\nSpecifically\, we extended PipeWire to tra ck buffer ownership across clients in order to improve how buffers are qu eued back to the V4L2 driver.\n\nThis presentation details our journey and lessons learned and will cover the following topics:\n\n - Implementation of a ringbuffer element in GStreamer\n - Impact on buffer management of G stV4l2BufferPool\n - Ensuring zero-copy across the entire Gstreamer pipeli ne\n - Challenges of using ringbuffer in combination with PipeWire and V4L 2\n - Buffer tracking in PipeWire\n\nhttps://indico.freedesktop.org/event/ 14/contributions/609/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/609/ END:VEVENT BEGIN:VEVENT SUMMARY:Permissions\, Isolation and Streams: Redesigning WirePlumber's Cor e DTSTART;VALUE=DATE-TIME:20261010T092500Z DTEND;VALUE=DATE-TIME:20261010T095500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-586@indico.freedesktop.org DESCRIPTION:Speakers: Julian Bouzas (Collabora)\nWirePlumber is the defaul t session and policy manager for PipeWire\, responsible for deciding which audio and video streams get connected to which devices or applications\, and under what rules. In 2026 its internals got a significant update\, and this talk will cover the biggest changes.\n\nFirst\, a new permission man ager lets WirePlumber grant or restrict what each client is allowed to see and do on the PipeWire graph\, using simple matching rules instead of spe cific pieces of logic scattered across scripts. This gives WirePlumber a p roper\, centralized way to sandbox untrusted or restricted clients.\n\nSec ond\, WirePlumber's policy logic runs as scripts\, which can occasionally take a while to execute. This could stall the graph objects that WirePlumb er runs locally. Now those objects run on their own separate thread\, isol ated from scripting\, so audio and video keep flowing smoothly no matter w hat the policy layer is doing.\n\nFinally\, streams and stream links are n ow modeled as first-class objects instead of being bundled into a single a bstract session item object. This makes it much easier to reason about wha t's actually flowing through the graph\, in addition to allowing nodes to support multiple streams easily.\n\nThis talk explains why each change was needed and what it means for anyone building on top of PipeWire.\n\nhttps ://indico.freedesktop.org/event/14/contributions/586/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/586/ END:VEVENT BEGIN:VEVENT SUMMARY:Color\, tracing and WebAssembly: a year of GStreamer for video edi ting DTSTART;VALUE=DATE-TIME:20261011T132000Z DTEND;VALUE=DATE-TIME:20261011T134000Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-604@indico.freedesktop.org DESCRIPTION:Speakers: Thibault Saunier (Igalia)\nThis talk will give an up date on the work done over the last year in GStreamer and GStreamer Editin g Services (GES)\, most of it now upstream or on its way there.\n\nWe'll s tart with the work done to give GStreamer a proper color correction story: the new float video formats\, what is needed to composite and grade in sc ene linear\, and the OpenColorIO integration we are working on.\n\nThis ta lk will also present the work done around performance and the tooling we h ave been adding in GStreamer to make it simpler (custom spans in the core\ ntracer\, rendered in Perfetto\, and a better gst-dots-viewer): where the time was spent during complex timeline editing\, and what we changed as a result\, from the way GES selects the compositor and the converters around it so that a single memory type can be kept end to end\, to making GES fu lly thread safe\, to the allocation queries we still drop and why.\n\nWe'l l also show what came out of compiling the whole GES stack to WebAssembly to run it in the browser\, decoding through WebCodecs and rendering throug h WebGL\, and discuss all the roadblocks we still have.\n\nhttps://indico. freedesktop.org/event/14/contributions/604/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/604/ END:VEVENT BEGIN:VEVENT SUMMARY:The Quest for Python Analytics DTSTART;VALUE=DATE-TIME:20261010T131500Z DTEND;VALUE=DATE-TIME:20261010T133500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-611@indico.freedesktop.org DESCRIPTION:Speakers: Aaron Boxer (Collabora Inc.)\nAt GStreamer Conferenc e 2024 I proposed GStreamer as the ideal nervous system for feeding AI bra ins with data. As Python is the dominant language in AI\, a new Python fra mework\, gst-python-ml\, was introduced to easily connect PyTorch models w ith GStreamer pipelines\, with support for object detection\, tracking\, l ocal speech to text and local text to speech.\n\nThis talk covers the many new features that have arrived since then\, including segmentation\, dept h and pose estimation\, OCR\, optical flow\, vision-language captioning\, Whisper\, and LLMs local and remote. PyTorch is now just one of fifteen di fferent inference backends including ONNX\, OpenVINO\, LIteRT and MIGraphX \, allowing us to support every conceivable ML model with ease. The framew ork is in active use\, powering many of Collabora’s ML demos.\n \nAlong the way\, we will view live demos of new vision and language features\, al l running on a humble consumer GPU\, with a focus on sport analytics.\n\nh ttps://indico.freedesktop.org/event/14/contributions/611/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/611/ END:VEVENT BEGIN:VEVENT SUMMARY:Secure Video Path Done the Right Way DTSTART;VALUE=DATE-TIME:20261010T135500Z DTEND;VALUE=DATE-TIME:20261010T142500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-614@indico.freedesktop.org DESCRIPTION:Speakers: Nicolas Dufresne (Collabora)\nMany devices today shi p with hardware-protected Digital Rights Management (DRM) pipelines built on GStreamer. Too often\, developers assume that DRM is destined to remain proprietary and that the only way forward is with hacks and downstream wo rkarounds. In practice\, this leads to heavily diverging forks\, making up grades difficult\, pinning products to ancient GStreamer versions\, and ex posing systems to severe security threats.\n\nIn this talk\, Nicolas will walk through the emerging upstream architecture for hardware-protected DRM and Secure Video Path (SVP) on ARM devices using OP-TEE. Attendees will l earn what is already in place upstream\, what components are still in prog ress\, the technical hurdles encountered along the way\, and the strategie s being used to solve them.\n\nhttps://indico.freedesktop.org/event/14/con tributions/614/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/614/ END:VEVENT BEGIN:VEVENT SUMMARY:Digitally Signed Content & C2PA DTSTART;VALUE=DATE-TIME:20261010T103500Z DTEND;VALUE=DATE-TIME:20261010T110500Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-607@indico.freedesktop.org DESCRIPTION:Speakers: Diego Nieto Munoz (Fluendo)\nThis talk presents the implementation of Digitally Signed Content (DSC) within GStreamer to ensur e trustworthy video authenticity. We'll demonstrate our new dscsigner elem ent\, which generates cryptographic signatures for coded bitstreams\, alon gside dscverifier\, which verifies video authenticity in real-time. The pr esentation covers the integration of JVET supplemental enhancement informa tion (SEI) messages at the NAL unit level\, highlighting our parser and in serter elements (such as h266seiinserter) supporting H.266/VVC\, H.265/HEV C\, and H.264/AVC standards. Finally\, we’ll showcase how these plugins provide authenticity and provenance for RTP-based streams through C2PA.\n\ nhttps://indico.freedesktop.org/event/14/contributions/607/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/607/ END:VEVENT BEGIN:VEVENT SUMMARY:GstVulkan in Production: Lessons from the Real World DTSTART;VALUE=DATE-TIME:20261011T120000Z DTEND;VALUE=DATE-TIME:20261011T123000Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-620@indico.freedesktop.org DESCRIPTION:Speakers: Anders Hellerup Madsen ()\nTo gain cross-platform ca pabilities in our video processing pipelines\, we at Veo Technologies deci ded to convert our custom GPU-dependent GStreamer elements from CUDA to Vu lkan. Today\, several of our production video processing pipelines run ent irely on GstVulkan\, processing hundreds of thousands of sports recordings every week\, having performance parity with the CUDA pipelines.\n\n- We c urrently run the same pipelines on Nvidia Tesla T4\, Nvidia Jetson\, MacOS \, and other GPU vendors.\n- We gained hands-on experience with GstVulkan in production.\n- We converted many CUDA kernels to Vulkan and Slang.\n- W e learned a lot about Vulkan synchronisation…\n- We solved a lot of chal lenges and upstreamed a few patches to GstVulkan along the way.\n\nIn this talk\, we will share our experiences with using GstVulkan in production: which strategies we used\, which challenges we ran into\, and what we gain ed.\n\nhttps://indico.freedesktop.org/event/14/contributions/620/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/620/ END:VEVENT BEGIN:VEVENT SUMMARY:Fluster over the course of 2026 DTSTART;VALUE=DATE-TIME:20261011T083000Z DTEND;VALUE=DATE-TIME:20261011T085000Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-612@indico.freedesktop.org DESCRIPTION:Speakers: Rubén Gonzalez ()\n* New decoders & test suites\n* The new sample comparison method that allows tolerance with the audio refe rence decoder.\n* New Docker image with a hardware support or libva-fake-d river.\n* Meson to build reference decoders\n* Fluendo custom test suite f or H.264-High444\n\nhttps://indico.freedesktop.org/event/14/contributions/ 612/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/612/ END:VEVENT BEGIN:VEVENT SUMMARY:A GStreamer-Based Performance Evaluation Tool for End-to-End Visua l AI Pipelines DTSTART;VALUE=DATE-TIME:20261011T091000Z DTEND;VALUE=DATE-TIME:20261011T094000Z DTSTAMP;VALUE=DATE-TIME:20261010T001622Z UID:indico-contribution-73-616@indico.freedesktop.org DESCRIPTION:Speakers: Jan Gorecki (Intel)\nEvaluating the performance of G Streamer-based visual AI pipelines on heterogeneous hardware is a complex systems engineering challenge. Simple metrics like raw TOPS are insufficie nt for understanding real-world performance\, which is heavily impacted by codec complexity\, model architecture\, and concurrent system resource co ntention across the CPU\, GPU\, and NPU.\nThis presentation will demonstra te how the benchmarking challenges have been directly addressed in the Vis ual Pipeline and Platform Evaluation Tool (ViPPET)\, an open\, GStreamer-b ased utility. \nSpecifically\, we will show how developers can use the to ol to determine the maximum concurrent stream density for a given hardware .\nIt will cover four aspects of the tool for flexible initial benchmarkin g:\n•Data Ingestion & Pipeline Customization - using custom media assets \, image sets\, and live camera feeds to test realistic input scenarios.\n •Pre-built Vision AI Workloads - Leveraging optimized\, out-of-the-box pipeline templates (e.g.\, Object Detection\, Tracking\, and Pose Estimati on) as baseline references.\n• Performance Analysis - Measuring true th roughput (FPS)\, end-to-end pipeline latency\, and correlating these with real-time CPU\, GPU\, and NPU utilization.\n• Enhanced user experience\, e.g. advanced view and simplified view on GStreamer pipeline.\n\nhttps:// indico.freedesktop.org/event/14/contributions/616/ LOCATION:Impact Hub Prague URL:https://indico.freedesktop.org/event/14/contributions/616/ END:VEVENT END:VCALENDAR