Jun Tian
Software Engineer at Meta
Bellevue, Washington, United States
Summary
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Rockstar🎓
Top SchoolJun Tian is a multimedia-focused software engineer with eight years of product development experience and deep expertise in C/C++ on Android and Windows. He has five years of embedded middleware experience and a strong track record improving video calling, streaming, broadcasting, and local playback across products at Meta and Intel. Jun brings low-latency, high-performance design skills—optimizing codecs, pipelines, and A/V sync—and practical mastery of frameworks like Media Foundation, StageFright, WebRTC and Intel Media SDK. He contributed performance and platform-specific fixes to the widely used open-source SVT-HEVC encoder, adding features like thread affinity control and GStreamer plugin enhancements. An automation enthusiast, he built shell- and UiAutomator-based test frameworks that dramatically increased coverage and reduced manual effort. Combining academic grounding in H.264 with hands-on profiling and tuning, he consistently boosts video quality of experience while lowering CPU and latency.
7 years of coding experience
4 years of employment as a software developer
M.S. Electrical Engineering, H.264 algorithm, M.S. Electrical Engineering, H.264 algorithm at Beihang University
Stackoverflow
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Github Skills (11)
c1710
h26510
c1110
performance-optimization10
hevc10
thread9
multithreading9
hyper-threading9
threaded9
gstreamer8
avx7
Programming languages (7)
Github contributions (5)
OpenVisualCloud/SVT-HEVC
Oct 2018 - Jun 2021
SVT HEVC encoder. Scalable Video Technology (SVT) is a software-based video coding technology that is highly optimized for Intel® Xeon® processors. Using the open source SVT-HEVC encoder, it is possible to spread video encoding processing across multiple Intel® Xeon® processors to achieve a real advantage of processing efficiency.
Role in this project:
Back-end Developer / Performance Engineer
Back-end Developer / Performance EngineerContributions:3 releases, 15 reviews, 57 commits in 2 years 8 months
Contributions summary:Jun primarily contributed to the optimization and maintenance of the SVT-HEVC encoder. Their work included supporting pipe-based input, fixing build issues, and addressing potential memory alignment problems. They also implemented thread affinity control, introduced fixes for Windows builds, and reverted a previous AVX2 optimization, suggesting involvement in performance tuning and platform-specific adjustments. Furthermore, the user added features to the GStreamer plugin and added functionalities for unrestricted motion vectors to further optimize the HEVC encoder.
encoderhevcvideo-encodingsvth265
tianjunwork/SVT-HEVC
Oct 2018 - Jun 2021
Contributions:1 PR, 107 pushes, 89 branches in 2 years 8 months
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