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Synchronizing Video and Audio Playback

2025.06.29Technical Log#playback#product-ui#sound-engine

Reviewed the full playback pipeline to improve video-audio synchronization accuracy and reduce latency introduced by the effects chain.

Intermittent timing mismatches were identified between video rendering and audio output, most apparent at scene transitions. Given that content is delivered in short looping segments, even minor desynchronization directly affects perceived playback reliability.

The full playback pipeline was reviewed: track load sequencing, audio session lifecycle, loop boundaries at scene transitions, and the points at which the reverb and effects chain is applied. The effects processing layer was realigned with video transition points to prevent spatial audio rendering from introducing playback delays.

The onboarding-to-content entry flow was also restructured — from a feature enumeration layout to a single continuous sequence — improving consistency between UI presentation and the stabilized playback behavior.