cap-v0.4.83

opendatalab/MinerUcap-v0.4.83Apr 4, 2026by github-actions[bot]

AI Summary

This release fixes multiple audio-related issues including playback across speed segments, audio drift correction, and various stability improvements for the Cap video editor.

Key Highlights

Audio renders correctly across speed change boundaries
Fixed crash when starting audio playback in certain editor states
Audio sync drift fixed on macOS
Improved FFmpeg decoder reliability

New Features

Audio across speed segments rendering
Audio playback stability fixes
Audio drift correction on macOS
FFmpeg decoder reliability improvements
Export fix for recovered projects
macOS startup race fix
Window layering fix
macOS dock icon sync
Camera cleanup on exit
Windows editor reopen
Hex color input validation
Camera preview compositing fix

Full Release Notes

- **Audio across speed segments** — Timeline audio now renders correctly across speed change boundaries. Previously, applying speed changes could cause audio to cut out or glitch at segment edges.
- **Audio playback stability** — Fixed a crash that could occur when starting audio playback in certain editor states.
- **Audio drift correction** — The macOS MP4 encoder audio drift guard is now based on effective video PTS, fixing audio sync drift that could occur with external microphones.
- **Sensitive mask scaling** — Pixelation masks now scale proportionally with output height, so blurred regions stay correctly sized when exporting at different resolutions.
- **FFmpeg decoder reliability** — Future frames are now ignored during decoder fallback, and the frame reuse window is wider, preventing wrong frames from appearing during seeking or playback near cuts.
- **Export fix for recovered projects** — Recovered projects no longer force the FFmpeg decoder path, fixing export failures that could occur on recordings restored from a crash.
- **macOS startup race fix** — Main window setup is deferred until the UI reports ready, and uploads resume correctly after the ready listener installs. This fixes a class of startup hangs and stalled uploads on macOS.
- **Window layering fix** — The main panel is no longer forced above other windows when shown, fixing cases where Cap would unexpectedly steal focus.
- **macOS dock icon sync** — Dock icon visibility now correctly follows the hide-dock-icon setting and updates when windows open or close.
- **Camera cleanup on exit** — Camera preview shutdown always begins on app exit, and macOS camera window teardown is skipped during exit cleanup to prevent quit-time crashes.
- **Windows editor reopen** — Editor windows on Windows now correctly reopen after being closed, matching the existing macOS behavior.
- **Hex color input** — RGB hex input is now gated until the full digit count is entered, preventing partial color values from being applied mid-typing.
- **Camera preview compositing** — The camera preview now selects a supported wgpu composite alpha mode, fixing rendering artifacts on GPUs that don't support the previously hardcoded mode.

## Downloads
- [macOS (Apple Silicon)](https://cdn.crabnebula.app/asset/01KNC6YXFHW9305BKXVPTM72QA)
- [macOS (Intel)](https://cdn.crabnebula.app/asset/01KNC6YE4VY554BD7R2MWJK6KH)
- [Windows](https://cdn.crabnebula.app/asset/01KNC93TBHEJ9HHXB8RBBF7CS3)