TUM-Dev/gocast
Nov 2024 – Oct 2025
9 Months active
Languages Used
CSSGoGoHTMLHTMLJavaScriptTypeScriptDockerfileprotobuf
Technical Skills
API DevelopmentAlpine.jsBackend DevelopmentCSSDatabase ManagementDependency Management
Sebastian
PROFILE
Sebastian
Sebastian Werner contributed to the TUM-Dev/gocast repository by engineering robust streaming and video management features, focusing on scalable infrastructure and admin usability. He implemented multi-protocol streaming support using Go and Protocol Buffers, enabling concurrent RTSP, SRT, and RTMP workflows. His work included backend and frontend enhancements for live lecture dashboards, VOD creation, and global search integration with MeiliSearch, improving both reliability and user experience. Sebastian also upgraded CI/CD pipelines and Docker-based build environments, ensuring maintainable deployments. His approach demonstrated depth in backend development, concurrency, and video processing, resulting in a more reliable, scalable, and user-friendly streaming platform.
Overall Statistics
Feature vs Bugs
76%Features
Repository Contributions
21Total
Bugs
4
Commits
21
Features
13
Lines of code
5,587
Activity Months9
Your Network
7 people
Work History
October 2025
2 Commits • 1 Features
Oct 1, 2025Concise monthly summary for 2025-10 focusing on key accomplishments, major bugs fixed, impact, and technologies demonstrated for TUM-Dev/gocast. Highlights: delivered SMP-based multi-stream support and MeiliSearch reliability fix; improved concurrency, protocol support (RTSP/SRT), and groundwork for scalable streaming.
2 Commits • 1 Features
Oct 1, 2025Concise monthly summary for 2025-10 focusing on key accomplishments, major bugs fixed, impact, and technologies demonstrated for TUM-Dev/gocast. Highlights: delivered SMP-based multi-stream support and MeiliSearch reliability fix; improved concurrency, protocol support (RTSP/SRT), and groundwork for scalable streaming.
October 2025
September 2025
2 Commits • 1 Features
Sep 1, 2025Month: 2025-09. Focused on Video on Demand (VOD) creation and management improvements in TUM-Dev/gocast. Delivered reliability and performance enhancements to the end-to-end VOD workflow, including persistence, event handling, and playlist URL management across stream versions, plus a significant speed-up of VOD generation.
September 2025
2 Commits • 1 Features
Sep 1, 2025Month: 2025-09. Focused on Video on Demand (VOD) creation and management improvements in TUM-Dev/gocast. Delivered reliability and performance enhancements to the end-to-end VOD workflow, including persistence, event handling, and playlist URL management across stream versions, plus a significant speed-up of VOD generation.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for TUM-Dev/gocast. Delivered an Admin Live Lecture Management Dashboard that centralizes admin control over live streams, video statistics, and chat moderation. This work enhances operational efficiency, improves oversight during live sessions, and lays the groundwork for future analytics and moderation tooling. No major bugs fixed this month. Overall impact: improved admin experience, reduced manual overhead, and stronger governance of live lectures. Technologies demonstrated: UI/UX improvements, admin tooling, frontend-backend integration, and robust version-control practices.
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for TUM-Dev/gocast. Delivered an Admin Live Lecture Management Dashboard that centralizes admin control over live streams, video statistics, and chat moderation. This work enhances operational efficiency, improves oversight during live sessions, and lays the groundwork for future analytics and moderation tooling. No major bugs fixed this month. Overall impact: improved admin experience, reduced manual overhead, and stronger governance of live lectures. Technologies demonstrated: UI/UX improvements, admin tooling, frontend-backend integration, and robust version-control practices.
July 2025
June 2025
5 Commits • 3 Features
Jun 1, 2025June 2025 — TUM-Dev/gocast: Delivered key features across runner management, streaming protocols, and media processing with a focus on reliability, scalability, and admin productivity. These initiatives improved operational efficiency and user experience for admins and operators. Key highlights and commits: - Runner Management System Upgrade: backend data model changes including runner version tracking, UI for managing runners, and CI/CD enhancements to lint and deploy the runner component. Notable commits include 6bd26022da81d2da323d2c6bb66fac7366586ca7 (Updated protobuf files to latest version and added runner version to DB), b7751548086253d8f3364c83e0506c5444987691 (Runner Web UI), caaf51e0267c0c07c5afc97ce6b21af147c4b098 (Added testing and deployment to runner). - Streaming Protocol Support for Lecture Halls: added support for RTSP and SRT across API, model, and frontend with proper creation/update handling. (commit 49e3de093ae29ee28ed216a5f1f0353e0f118cd1). - MKVod VOD Conversion with ffmpeg: introduced video conversion from HLS to VOD using ffmpeg, with progress metrics and enhanced logging. (commit 42fe4610d611927b0c14240e5452326eb89e71c6). Impact: Accelerated runner provisioning, expanded streaming capabilities for lecture halls, and streamlined media processing workflows, reducing manual steps and increasing observability and reliability. Major bugs fixed: None reported this month. Technologies/skills demonstrated: Protobuf/versioned data models, backend data modeling, UI development, CI/CD automation, streaming protocols RTSP/SRT, and ffmpeg-based media processing, with improved logging and observability.
June 2025
5 Commits • 3 Features
Jun 1, 2025June 2025 — TUM-Dev/gocast: Delivered key features across runner management, streaming protocols, and media processing with a focus on reliability, scalability, and admin productivity. These initiatives improved operational efficiency and user experience for admins and operators. Key highlights and commits: - Runner Management System Upgrade: backend data model changes including runner version tracking, UI for managing runners, and CI/CD enhancements to lint and deploy the runner component. Notable commits include 6bd26022da81d2da323d2c6bb66fac7366586ca7 (Updated protobuf files to latest version and added runner version to DB), b7751548086253d8f3364c83e0506c5444987691 (Runner Web UI), caaf51e0267c0c07c5afc97ce6b21af147c4b098 (Added testing and deployment to runner). - Streaming Protocol Support for Lecture Halls: added support for RTSP and SRT across API, model, and frontend with proper creation/update handling. (commit 49e3de093ae29ee28ed216a5f1f0353e0f118cd1). - MKVod VOD Conversion with ffmpeg: introduced video conversion from HLS to VOD using ffmpeg, with progress metrics and enhanced logging. (commit 42fe4610d611927b0c14240e5452326eb89e71c6). Impact: Accelerated runner provisioning, expanded streaming capabilities for lecture halls, and streamlined media processing workflows, reducing manual steps and increasing observability and reliability. Major bugs fixed: None reported this month. Technologies/skills demonstrated: Protobuf/versioned data models, backend data modeling, UI development, CI/CD automation, streaming protocols RTSP/SRT, and ffmpeg-based media processing, with improved logging and observability.
May 2025
3 Commits • 2 Features
May 1, 2025May 2025 performance summary for TUM-Dev/gocast focusing on delivering business value through scalable streaming infrastructure, UX improvements, and admin workflow enhancements.
3 Commits • 2 Features
May 1, 2025May 2025 performance summary for TUM-Dev/gocast focusing on delivering business value through scalable streaming infrastructure, UX improvements, and admin workflow enhancements.
May 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 (TUM-Dev/gocast) summary: Key feature delivered - SelfStream flag added to StreamRequest proto and Go implementation to differentiate self-initiated streams. This enables correct command execution based on stream type and reduces misrouted commands. Commits linked to issue #1389: 4c64adbf71991e75d67f9f0fce08665cace295b3. Major bugs fixed: none reported. Overall impact: increased reliability and maintainability of streaming workflows, with clearer stream-type handling. Technologies demonstrated: protobuf/proto changes, Go implementation, issue tracking, and commit traceability.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 (TUM-Dev/gocast) summary: Key feature delivered - SelfStream flag added to StreamRequest proto and Go implementation to differentiate self-initiated streams. This enables correct command execution based on stream type and reduces misrouted commands. Commits linked to issue #1389: 4c64adbf71991e75d67f9f0fce08665cace295b3. Major bugs fixed: none reported. Overall impact: increased reliability and maintainability of streaming workflows, with clearer stream-type handling. Technologies demonstrated: protobuf/proto changes, Go implementation, issue tracking, and commit traceability.
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Upgraded Docker build environment for TUM-Dev/gocast. Node.js base image alias updated to AS node and Go upgraded to 1.24.1, improving build security, stability, and maintainability. Change captured in commit f60c017b4c15f6cb2bca22986eee926804fd0438 (Updated dockerfiles (#1521)). No major bugs fixed this month; focus was on delivering a robust, reproducible build pipeline.
1 Commits • 1 Features
Mar 1, 2025March 2025: Upgraded Docker build environment for TUM-Dev/gocast. Node.js base image alias updated to AS node and Go upgraded to 1.24.1, improving build security, stability, and maintainability. Change captured in commit f60c017b4c15f6cb2bca22986eee926804fd0438 (Updated dockerfiles (#1521)). No major bugs fixed this month; focus was on delivering a robust, reproducible build pipeline.
March 2025
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 – Monthly summary for TUM-Dev/gocast. Focused on delivering a server-side feature to improve admin user management through role-based filtering in user search.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 – Monthly summary for TUM-Dev/gocast. Focused on delivering a server-side feature to improve admin user management through role-based filtering in user search.
November 2024
5 Commits • 2 Features
Nov 1, 2024November 2024 monthly summary for TUM-Dev/gocast: Focused on stabilizing core playback workflows while expanding discovery and admin capabilities. Delivered critical fixes to admin downloads, improved watch experience, restored worker stability, and launched a global search across courses, streams, and subtitles to enhance user navigation and permissions-aware discovery. These changes improved reliability, performance, and user engagement, while showcasing proficiency in backend fixes, UI polish, and search integration.
5 Commits • 2 Features
Nov 1, 2024November 2024 monthly summary for TUM-Dev/gocast: Focused on stabilizing core playback workflows while expanding discovery and admin capabilities. Delivered critical fixes to admin downloads, improved watch experience, restored worker stability, and launched a global search across courses, streams, and subtitles to enhance user navigation and permissions-aware discovery. These changes improved reliability, performance, and user engagement, while showcasing proficiency in backend fixes, UI polish, and search integration.
November 2024
Activity
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Quality Metrics
Correctness83.8%
Maintainability83.8%
Architecture79.6%
Performance76.2%
AI Usage21.0%
Skills & Technologies
Programming Languages
CSSDockerfileGoGoHTMLHTMLJavaScriptMakefileShellTypeScriptYAML
Technical Skills
API DevelopmentAlpine.jsBackend DevelopmentCI/CDCSSConcurrencyContainerizationDatabase InteractionDatabase ManagementDependency ManagementDevOpsDockerFFmpegFront-end DevelopmentFrontend Development
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