# 3CatLAB - Universal MediaSync

> Synchronize complementary audio and video on your mobile with your HbbTV TV.

Canonical page: [https://chrome-stats.com/d/cat.ccma.lab.universalmediasync](https://chrome-stats.com/d/cat.ccma.lab.universalmediasync)

## Overview

- **ID:** `cat.ccma.lab.universalmediasync`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Corporació Catalana de Mitjans Audiovisuals, SA
- **Category:** ENTERTAINMENT
- **Downloads:** 101
- **Version:** 1.4.1
- **Last updated:** 2026-09-05
- **First published:** 2026-07-21
- **Publisher country:** ES
- **Size:** 71 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=cat.ccma.lab.universalmediasync)
- **Privacy policy:** [https://ccma-enginyeria.github.io/Universal-HbbTV-MediaSync-App/privacy.html](https://ccma-enginyeria.github.io/Universal-HbbTV-MediaSync-App/privacy.html)

## Description

Universal MediaSync turns your mobile or tablet into a second screen perfectly synchronized with your TV.<br><br>Discover HbbTV-compatible TVs on your Wi-Fi network and enjoy complementary content - private listening with headphones, audio description, sign language, original version or alternative audio tracks - all perfectly synchronized with what is playing on the big screen.<br><br>MAIN FEATURES<br>• Automatic discovery of compatible TVs on the local network (DIAL/SSDP)<br>• Private listening: send TV audio to your headphones<br>• Accessibility tracks: audio description and sign language<br>• Alternative audio: original version and additional languages<br>• Precise synchronization with DVB-CSS (CSS-WC + CSS-TS)<br>• Playback continues with the app in the background<br>• Available in Catalan, Spanish, Basque, English, German, Italian and French<br><br>HOW IT WORKS<br>1. Connect your mobile to the same Wi-Fi network as your TV.<br>2. Tune to a channel that offers HbbTV Private Listening / MediaSync.<br>3. Open the app and choose your TV from the list of detected devices.<br>4. Choose the audio or video track you want and enjoy it synchronized.<br><br>Universal MediaSync is an open source initiative maintained by the HbbTV community: a single companion app for all broadcasters who want to offer second screen experiences, without having to develop one of their own.<br><br>Note: Requires an HbbTV compatible TV and a MediaSync enabled channel, both connected to the same Wi-Fi network.

## Rankings

- #1,976,664 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.CAMERA`
- `android.permission.CHANGE_WIFI_MULTICAST_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.RECORD_AUDIO`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `cat.ccma.lab.universalmediasync.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/cat.ccma.lab.universalmediasync)