Troubleshooting

iOS Simulator: noisy console logs when sharing videos

When you open UIActivityViewController (the share sheet) with a recorded .mp4 on the iOS Simulator, you'll see a wall of system framework logs like these:

[Sharing] Failed to request default share mode for fileURL:...
[Sharing] Only support loading options for CKShare and SWY types.
[Sharing] error fetching item for URL:... : (null)
[Sharing] error fetching file provider domain for URL:... : (null)
[MediaToolbox] <<<< VRP >>>> signalled err=-12852 at <>:2548
[VideoToolbox] (Fig) signalled err=-12900 at <>:1233

These are not from the library. They come from Apple's system frameworks (Sharing, MediaToolbox, VideoToolbox) and only appear on the Simulator because it lacks full Launch Services and hardware VideoToolbox support. The share sheet can't generate video thumbnails or find registered apps to handle .mp4 files in the simulated environment.

On a real device, these logs do not appear.

What you can do

Xcode 15+: Right-click one of the offending log lines in the console, choose "Hide Similar Items". The filter persists across runs, so you only need to do this once per log pattern.

Xcode 14 and earlier: Type a negative filter in the console filter bar (e.g., exclude [Sharing] or [MediaToolbox]) to hide matching lines.

These logs are annoying and noisy, but I am not aware of any way to disable them on the Simulator.