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I am Weichao Chen, a Senior Engineer specializing in audio and video R&D within the video surveillance industry. I possess nearly 10 years of full-stack development experience and am deeply familiar with the end-to-end process spanning from acquisition, encoding, and transmission to decoding and rendering. Technical Expertise I have solid practical experience with cross-platform player SDKs (such as FFmpeg and ZLMediaKit), media streaming forwarding, and embedded devices (IPC/NVR). Proficient in C/C++ and Linux, with an in-depth understanding of mainstream protocols like RTSP, WebRTC, and GB28181, as well as TS/PS encapsulation formats. I have repeatedly led performance optimization initiatives, successfully enhancing the first-screen experience for cloud playback, and improving the efficiency of caching and TLS 1.3 0-RTT content retrieval.…I am Weichao Chen, a Senior Engineer specializing in audio and video R&D within the video surveillance industry. I possess nearly 10 years of full-stack development experience and am deeply familiar with the end-to-end process spanning from acquisition, encoding, and transmission to decoding and rendering. Technical Expertise I have solid practical experience with cross-platform player SDKs (such as FFmpeg and ZLMediaKit), media streaming forwarding, and embedded devices (IPC/NVR). Proficient in C/C++ and Linux, with an in-depth understanding of mainstream protocols like RTSP, WebRTC, and GB28181, as well as TS/PS encapsulation formats. I have repeatedly led performance optimization initiatives, successfully enhancing the first-screen experience for cloud playback, and improving the efficiency of caching and TLS 1.3 0-RTT content retrieval.

Waylon

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I am Weichao Chen, a Senior Engineer specializing in audio and video R&D within the video surveillance industry. I possess nearly 10 years of full-stack development experience and am deeply familiar with the end-to-end process spanning from acquisition, encoding, and transmission to decoding and rendering. Technical Expertise I have solid practical experience with cross-platform player SDKs (such as FFmpeg and ZLMediaKit), media streaming forwarding, and embedded devices (IPC/NVR). Proficient in C/C++ and Linux, with an in-depth understanding of mainstream protocols like RTSP, WebRTC, and GB28181, as well as TS/PS encapsulation formats. I have repeatedly led performance optimization initiatives, successfully enhancing the first-screen experience for cloud playback, and improving the efficiency of caching and TLS 1.3 0-RTT content retrieval.…I am Weichao Chen, a Senior Engineer specializing in audio and video R&D within the video surveillance industry. I possess nearly 10 years of full-stack development experience and am deeply familiar with the end-to-end process spanning from acquisition, encoding, and transmission to decoding and rendering. Technical Expertise I have solid practical experience with cross-platform player SDKs (such as FFmpeg and ZLMediaKit), media streaming forwarding, and embedded devices (IPC/NVR). Proficient in C/C++ and Linux, with an in-depth understanding of mainstream protocols like RTSP, WebRTC, and GB28181, as well as TS/PS encapsulation formats. I have repeatedly led performance optimization initiatives, successfully enhancing the first-screen experience for cloud playback, and improving the efficiency of caching and TLS 1.3 0-RTT content retrieval.

Available to hire

Hangzhou Shi, China

I am Weichao Chen, a Senior Engineer specializing in audio and video R&D within the video surveillance industry.

I possess nearly 10 years of full-stack development experience and am deeply familiar with the end-to-end process spanning from acquisition, encoding, and transmission to decoding and rendering.

Technical Expertise
I have solid practical experience with cross-platform player SDKs (such as FFmpeg and ZLMediaKit), media streaming forwarding, and embedded devices (IPC/NVR).

Proficient in C/C++ and Linux, with an in-depth understanding of mainstream protocols like RTSP, WebRTC, and GB28181, as well as TS/PS encapsulation formats.

I have repeatedly led performance optimization initiatives, successfully enhancing the first-screen experience for cloud playback, and improving the efficiency of caching and TLS 1.3 0-RTT content retrieval.

Skills

C++

Experience Level

C++

Expert

Language

Chinese

Fluent

English

Advanced

Work Experience

Senior Audio/Video Development Engineer at China Mobile Research Institute

July 1, 2021 - October 1, 2025

Led the development of cross-platform Player SDKs for Android, iOS, and Windows, covering video demuxing, software/hardware decoding, and OpenGL rendering. Spearheaded key projects including video preloading, intelligent TS caching, TLS 1.3 0-RTT content retrieval, and IPv6 streaming, significantly enhancing user experience and transmission security. Engineered a proprietary TS private stream transmission solution by modifying the FFmpeg source code to embed encryption keys in a private channel, achieving end-to-end encryption. Developed a Pan-Tilt delay detection feature using global motion estimation algorithms to accurately measure PTZ latency, providing critical data for platform Quality of Service (QoS) monitoring.

Senior Audio/Video Development Engineer at TP-Link

August 1, 2019 - March 1, 2021

Responsible for audio/video embedded development for multi-platform NVR (Network Video Recorder) products. Developed the NVR streaming media forwarding service functionality and implemented GB28181 and RTSP protocols.

Audio/Video Development Engineer at EZVIZ

August 1, 2017 - July 1, 2019

Developed the audio/video pipelines for Action Cameras and Dual-Lens IPCs (Internet Protocol Cameras), including data acquisition, H.264/H.265 encoding, MP4/TS encapsulation, and network transmission. Successfully implemented voice control functionality for Action Cameras using speech recognition technology, significantly improving product interactive experience.

iOS Development Engineer at Shanghai Rongjue

June 1, 2016 - August 1, 2017

Responsible for iOS client-side development for input method and cultural/creative applications, gaining experience in iOS application development.

Audio/Video Development Engineer at Kedacom

July 1, 2015 - May 1, 2016

Involved in the R&D of Video Conferencing System MCU (Multipoint Control Unit), handling the encoding, decoding, mixing, and screen composition of dozens to hundreds of audio/video streams, laying a valuable foundation for subsequent A/V work. Executed efficient development in a Linux environment, proficiently using GCC for compilation and GDB for debugging and performance analysis.