Bug replay

Quick start

1. Enable the replay buffer recording mode in the toolbar (the default mode is quality recording, which captures continuous video instead of a rolling buffer).
2. Reproduce the bug on the connected device.
3. Click the Capture Bug button in the toolbar.

Emu saves the captured artifacts (video, inputs, logs) into a local bug report. You can then export it as a single .emubug file from the bug detail view.

Tip

The replay buffer continuously records the last N seconds of activity in memory. When you capture a bug, Emu saves what’s already in the buffer — no need to have started recording beforehand.

What’s captured

• Screen recording: Video of the device display from the replay buffer.
• Touch actions: A timeline of user interactions with accessibility labels.
• Logcat: System logs for the duration of the capture.
• Crash stack traces: Included if the app crashed during the recording.

Configurable buffer

Adjust the replay buffer settings in Settings.

• Duration: 15 seconds to 5 minutes.
• Resolution: 480p, 720p, or 1080p. Lower resolutions use less memory and produce smaller exports.

Export and sharing

From the bug detail view, export the report as a single .emubug file. Share it with a teammate — when they open it in Emu, they see the video, touch timeline, and logs without needing to reproduce the bug.

Video playback

Open a bug report in Emu to scrub through the recording. The interaction timeline is synced to the video so you can see which touch action corresponds to each frame.