DejaVu: Crash-Resistant Instant Replay for Windows
Never miss a moment with this persistent screen recording solution.
1Ease of Use
DejaVu offers a single-EXE screen recording solution requiring no installation. Managed from the system tray, it automatically activates with Windows startup. Users can instantly save the last 5-25 minutes with Alt+F10 hotkey. Recorded videos are automatically saved in MP4 format to Videos/DejaVu folder, with notification balloon feedback.
2Crash-Resistant Design
Unlike traditional RAM-based solutions, DejaVu uses segmented disk buffering that preserves footage even during system crashes. The software automatically scans for recoverable clips on each launch. It also fails over to primary display when capture interrupts occur, ensuring continuous operation.
3Discord Integration
DejaVu features specialized audio mixing that automatically filters voice chat applications like Discord. Users don't need manual configuration to exclude notification sounds. System audio and microphone inputs can be controlled separately, with complete mic muting option available.
4Performance Optimization
The software supports AV1 encoding on modern GPUs (RTX 40 series, RX 7000 series, Intel Arc), delivering 66% smaller file sizes at equal quality. Older hardware automatically falls back to H.264. Consumes only 135MB RAM when recording 1440p at 60 FPS.
5Customization Options
Users can adjust buffer duration between 5-25 minutes. Recording quality offers Low/Medium/High presets with constant-quality encoding that automatically increases bitrate for action scenes. Frame rate supports 30-240 FPS range. Storage caps of 10/25/50GB can be set for recordings folder.
6Anti-Cheat Compatibility
The software provides admin mode launch option for games with anti-cheat protection. This solves hotkey unresponsiveness issues during gameplay. Users can switch to this mode without system reboot when needed.
7Competitive Comparison
Compared to NVIDIA ShadowPlay, DejaVu eliminates silent shutdown issues. Unlike OBS Studio, it doesn't require manual buffer initiation per session. It standardizes crash recovery and Discord audio filtering missing in both solutions. Delivers full functionality in a single 160KB EXE file.
8Developer Approach
The MIT-licensed open source project features automated testing. Smoke tests perform real screen recording while soak tests simulate random crashes to verify data integrity. Developer targets seamless operation on post-2015 systems. Project is presented as sibling to screenshot tool Memento.
Original article: Hacker News: Show HN — DejaVu: Çökmelere Dayanıklı Anında Tekrar Yazılımı