Mkvcinemas.h -
// Target framerate (e.g., 24, 30, 60) unsigned int targetFps = 60;
class AssProvider : public mkv::SubtitleProvider public: explicit AssProvider(const std::string& assFile); std::optional<Subtitle> getSubtitle(std::chrono::nanoseconds pts) override; private: // Parsed ASS events stored internally ; The engine called getSubtitle for each frame, and the UI rendered the stylized text atop the video. The seamless integration was possible because used pure virtual interfaces for extensions, keeping the core lightweight. 4.2 The Audio‑Sync Disaster Leo pushed the engine into a VR experiment, feeding frames at 90 fps while the audio pipeline ran at 48 kHz. Initially, lips lagged because the engine’s internal clock drifted. Mara added a SyncGuard class: mkvcinemas.h
// Enable subtitle rendering bool subtitles = true; // Target framerate (e
