Triller — Video Editor

Triller · Senior Android · 2022 — 2023

Rebuilt the video pipeline for Triller’s editor — faster rendering and smoother playback for millions of creators.

2×

render

−40%

buffering

−70%

crashes

// Context

Triller’s editor rendered video slowly and buffered on weak networks, and crashed often — creators lost work mid-export.

// What I built

+Parallelised the render pipeline to cut processing time

+Migrated streaming from HLS to MP4 for weak connections

+Fixed 30+ editor bugs and implemented SSOT + pagination

+Optimised ExoPlayer with reel caching

video/Encoder.kt

-encoder.format = HLS

+encoder.format = MP4 // −40% buffering

-render(clip) // 7.5s

+renderParallel(clip) // 3.7s

// Result

✓Video processing 7.5s → 3.7s (2×)

✓−40% buffering on slow connections

✓−70% crash rate

// Stack

KotlinExoPlayerCoroutinesMP4 / HLSSSOT