Crash-safe by design
Fragmented container, .part staging, atomic rename, graceful shutdown
escalation, and an encoder watchdog.
CastMane
If the app crashes mid-recording, your footage survives.
Why CastMane?
Section titled “Why CastMane?”Many recorders write the .mp4 index only on clean shutdown — if the app
crashes mid-recording, the whole file is often lost. CastMane is built around
a single principle: a crash must never cost you the footage.
Verified: a recording killed with
kill -9remains fully playable (h264,ffprobe-checked). See the crash-safety guide.
Wayland-first, X11 fallback
Native capture via xdg-desktop-portal ScreenCast + GStreamer on Wayland,
automatic ffmpeg (x11grab) fallback on X11.
Minimal UI
Record / Stop / Pause, elapsed timer, status line. Draft / Balanced / High quality presets.
One-file install
A single AppImage bundles Python, Qt, and all dependencies. No venv, no pip, no toolchain.
Quick start
Section titled “Quick start”chmod +x CastMane-*.AppImage./CastMane-*.AppImageThat’s it. Full instructions are in Installation.