TUM-Dev/gocast
Nov 2024 – Apr 2026
11 Months active
Languages Used
CSSGoGoHTMLHTMLJavaScriptTypeScriptDockerfileprotobuf
Technical Skills
API DevelopmentAlpine.jsBackend DevelopmentCSSDatabase ManagementDependency Management
Sebastian
PROFILE
Sebastian
Worked on the TUM-Dev/gocast repository, delivering features and fixes across streaming infrastructure, admin tooling, and deployment workflows. Over 11 months, contributed to scalable RTMP and VOD pipelines, implemented global and role-based search, and enhanced live lecture management dashboards. Leveraged Go, TypeScript, and Docker to build backend systems for stream processing, concurrency, and protocol support, while improving frontend usability with Alpine.js and video.js. Addressed reliability through bug fixes in playback, search, and admin workflows, and streamlined deployment with reproducible database initialization. The work demonstrated depth in backend development, CI/CD automation, and cross-stack integration for video streaming and management platforms.
Overall Statistics
Feature vs Bugs
81%Features
Repository Contributions
26Total
Bugs
4
Commits
26
Features
17
Lines of code
10,392
Activity Months11
Work History
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 focused on stabilizing and accelerating deployment for the gocast project by improving database initialization and deployment setup. The work enhances reproducibility for new environments, reduces onboarding time, and lowers deployment errors through clarified instructions and a reusable SQL bootstrap artifact.
1 Commits • 1 Features
Apr 1, 2026April 2026 focused on stabilizing and accelerating deployment for the gocast project by improving database initialization and deployment setup. The work enhances reproducibility for new environments, reduces onboarding time, and lowers deployment errors through clarified instructions and a reusable SQL bootstrap artifact.
April 2026
November 2025
4 Commits • 3 Features
Nov 1, 2025November 2025 (2025-11) summary for TUM-Dev/gocast: Delivered key features to improve reliability and scalability, fixed critical playback issues on iOS, and implemented robust livestream lifecycle management. These work items reduce storage costs, improve UX, and enable scalable streaming in production. Highlights below.
November 2025
4 Commits • 3 Features
Nov 1, 2025November 2025 (2025-11) summary for TUM-Dev/gocast: Delivered key features to improve reliability and scalability, fixed critical playback issues on iOS, and implemented robust livestream lifecycle management. These work items reduce storage costs, improve UX, and enable scalable streaming in production. Highlights below.
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
Correctness84.6%
Maintainability83.8%
Architecture80.4%
Performance77.6%
AI Usage24.6%
Skills & Technologies
Programming Languages
CSSDockerfileGoGoHTMLHTMLJavaScriptMakefileMarkdownSQLShell
Technical Skills
API DevelopmentAPI developmentAlpine.jsBackend DevelopmentCI/CDCSSConcurrencyContainerizationDatabase InteractionDatabase ManagementDependency ManagementDevOpsDockerFFmpegFront-end Development
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