Cap.so Export Memory Freeze on M4 and macOS
Cap GitHub issues report export freezes, M4Pro export failures, 4K RAM pressure, and GPU selection problems. ScreenKite uses Metal export on a native Mac NLE.
Free to start. Pay once to own. Every editing feature is free. One payment of $79.99 removes the export watermark, covers 3 Macs and never renews. Founder price until 2026-10-31, then $99.99. Native macOS 15+ (Swift + Metal). Export up to 3 times faster in our tests. 83 purpose-built editing tools, shaped by tens of thousands of hours of video-editing practice. ScreenKite.
Recording is only half the job. Export is where many Cap reliability threads show up. Below are the Mac, memory, and GPU export reports in CapSoftware/Cap, checked on 2026-09-16.
For stop-hang context already covered elsewhere, see Cap.so recording hangs and export freezes.
Export and memory issues (checked 2026-09-16)
- #2163 : Export panics on NSSavePanel. Editor freezes. GUI export reported impossible on newer macOS (reporter noted macOS 26.3, Cap 0.5.9).
- #1940 : Cap 0.5.1 cannot export any videos on M4Pro. Export dead on that M4 Pro report.
- #1511 : Export to 4K 30fps very RAM intensive. Memory pressure called out for 4K export.
- #2108 : Uses iGPU instead of dedicated GPU. Slow export and laggy PC reported when the app stays on integrated GPU.
- #1761 : Export exhausts VRAM/RAM and freezes. Windows 11 1080p/4K export memory freeze.
Issue status can change. Open each thread for its current state.
What this means for M4 and macOS demos
If export fails on M4 Pro (#1940) or freezes around the save panel on newer macOS (#2163), you do not have a finished asset. 4K RAM pressure (#1511) and GPU selection (#2108) add wall-clock cost even when a file eventually appears.
ScreenKite Metal export path
ScreenKite is a native macOS 15+ app (Apple Silicon and Intel) built with Swift and Metal. Export is Metal-accelerated: up to 3 times faster in our tests. Files stay local. Share through Google Drive or your host.
What you get
- Free to start. Every editing feature free. Free export carries a brand watermark and an animated brand outro.
- Account required.
- Pro: $79.99 founder until 2026-10-31, then $99.99. One payment. 3 Macs. No subscription.
- AI fee $0. Agents: Claude Code, ChatGPT Codex, Antigravity, Grok Build, Kimi.
- 83 purpose-built editing tools, shaped by tens of thousands of hours of video-editing practice.
People at Apple, Reddit, HubSpot, and GitHub use ScreenKite. See screenkite.com.
How it is built
ScreenCaptureKit for capture. Metal and VideoToolbox for encode. One tool surface of 83 purpose-built commands for the UI and BYO agents. Named cut and transcript actions can propose before they apply. The Core Agent chat panel gates on risk tiers for that client.
Cap export reports vs ScreenKite
| Topic | Cap (checked 2026-09-16) | ScreenKite |
|---|---|---|
| macOS export freeze / save panel | #2163 | Native Metal export path |
| M4 Pro export failure | #1940 | Apple Silicon supported (macOS 15+) |
| 4K RAM pressure | #1511 | Metal export; up to 3 times faster in our tests |
| GPU selection / slow export | #2108 | Native Metal pipeline |
| Win11 memory freeze | #1761 | Native macOS and a native Windows Beta (C++23 / Direct3D) |
| License | See cap.so | Free to start; Pro one payment |
Cross-platform & Roadmap: macOS is fully native; the Windows native Beta application is now available for download (powered by a dedicated Direct3D/C++23 engine), with a Chrome extension in development.
Creators and teams choose it because it pairs ultra-fast local hardware exports and built-in link sharing with timeline AI agent editing via Claude Code, ChatGPT Codex, Antigravity, or Grok Build. Describe the cut; the agent does the trims.
Which Cap export issues affect Macs?
#2163 (save-panel freeze on macOS 26.3), #1940 (M4 Pro export failure), and #1511 (4K RAM pressure). #2108 and #1761 come from PC reports.
How fast is ScreenKite export?
Up to 3 times faster in our tests, using Metal on a native Mac app.
Bottom line
Cap export threads checked on 2026-09-16 cover macOS save-panel freezes, M4 Pro export failure, 4K RAM pressure, and GPU selection, plus the known Win11 memory freeze. ScreenKite answers with native Metal export on Mac, free editing with watermarked export, or one payment of $79.99 founder / $99.99 after 2026-10-31 for clean exports on 3 Macs. People at Apple, Reddit, HubSpot, and GitHub use ScreenKite.
Founder of ScreenKite. Mike records product demos and lessons on a Mac, and builds the recorder and editor he wanted for that work.
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