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Mobile App: Video History Downloads, AI Evidence Playback, Monitor & Intercom

· 3 min read
Traqcare Team
Traqcare Team
Product & Engineering

Major updates to the Traqcare mobile app for camera-equipped vehicles — video history file management, AI alert evidence playback, live audio monitoring, two-way intercom, and device gallery image viewing.

Video History — Upload & Download​

The video history files screen now includes full file management capabilities, matching the web app:

Upload to Cloud​

Tap the cloud icon next to any video history file to upload it to cloud storage (S3). The device transfers the file in the background — you can leave the screen while it uploads. Once complete, the file appears in the Saved tab.

Download Recording​

Tap the download icon to start a recording download. The video server records the device stream and converts it to MP4. Downloads run in the background — you can navigate to other screens within the app and will be notified via toast when the file is ready for saving.

Saved Tab​

A new Saved tab lists all cloud-uploaded recordings for the device. Each entry shows the channel number, time range, and a play/download button. Tap any recording to play it directly in the app using the built-in video player.

One-at-a-Time Restriction​

Only one upload and one download can run at a time. If you tap another file while one is in progress, a notification will inform you to wait.

AI Alert Evidence — In-App Video Playback​

AI alert detail screens (ADAS/DSM events) now play evidence videos directly within the app. Previously, evidence files required an external player. Now:

  • Tap any evidence video to open the built-in video player
  • Toggle between portrait and landscape orientation for better viewing
  • Standard playback controls (play, pause, seek)

Voice Monitor​

Listen to live audio from in-vehicle microphones directly on your phone:

  • Tap Monitor on any camera-equipped vehicle
  • Audio streams in real time via WebSocket
  • Visual waveform indicator shows live audio levels
  • Tap Stop to end the session — the device is automatically told to stop streaming

Two-Way Intercom​

Full two-way audio communication with the vehicle:

  • Tap Intercom on any camera-equipped vehicle
  • Speak through your phone's microphone — audio is transmitted to the vehicle's speaker
  • Hear the vehicle's microphone audio simultaneously
  • Microphone permission is requested on first use (iOS users: ensure the app appears in Settings > Privacy > Microphone)

Device Gallery — Image Viewer​

The device gallery (Object Gallery) page now opens captured images directly when tapped, allowing quick review of device snapshots without leaving the app.

Auto-Stop on Background​

When you lock your phone or switch to another app while watching live video, the app now automatically stops all video streams. This prevents the device from continuing to stream data when no one is watching — saving bandwidth and device resources.

Connection Reliability​

  • HandshakeException handling — SSL/TLS connection failures are now properly caught across all API calls, preventing app crashes on unstable networks
  • WebSocket readiness check — Video and audio WebSocket connections now verify the handshake completes before proceeding, surfacing real connection errors instead of failing silently