Eemeli Kallio
Software Developer at Veracell
Tampere, Pirkanmaa, Finland
Summary
👤
Senior🎓
Top SchoolEemeli Kallio is a software developer based in Tampere, Finland, with a decade of experience specializing in video encoding and backend systems. He contributed significant motion estimation and quantization improvements to the open-source HEVC encoder Kvazaar, including optimized motion vector search routines and options to skip costly calculations for performance gains. After five years as a research assistant developing Kvazaar at Tampere University of Technology, he transitioned to industry at Veracell where he continues to apply his low-level optimization and algorithmic skills. Eemeli combines academic rigor—teaching data structures and algorithms—with practical engineering that targets real-world performance trade-offs, and he’s comfortable navigating both research codebases and production backends.
10 years of coding experience
6 years of employment as a software developer
Master of Science - MS, Information Technology, Master of Science - MS, Information Technology at Tampere University of TechnologyMaster of Science - MS, Information Technology, Master of Science - MS, Information Technology at Tampere UniversityHigh School, High School at Sammon keskuslukio
English, Finnish, Swedish, German
Github Skills (12)
c1710
h26510
video-encoding10
c1110
hevc10
optimization9
data-structure9
algorithm9
data-structures9
quantization9
algorithms9
avx7
Programming languages (1)
Github contributions (2)
ultravideo/kvazaar
May 2016 - Mar 2019
An open-source HEVC encoder
Role in this project:
Back-end Developer
Back-end DeveloperContributions:28 commits, 1 PR, 19 pushes in 2 years 10 months
Contributions summary:Eemeli's contributions focused on enhancing the HEVC encoder, specifically in the area of motion estimation and quantization. They added new functions related to motion vector search algorithms, including `select_starting_point` and `mv_in_merge`. The user also implemented an early termination option for motion estimation and added a feature to skip RDOQ for 4x4 blocks under certain conditions. Additionally, they made changes to improve the RDOQ process and incorporated the option to skip unnecessary calculations.
hevcencodervideohevc-encoderh265
miimiz/kvazaar
May 2016 - Jun 2016
Contributions:3 pushes, 5 branches in 23 days
hevc-encoderhevcencoder
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