# DuoCam: Dual Format Camera

> Record once for 9:16 and 16:9 videos, plus front/rear dual camera.

Canonical page: [https://chrome-stats.com/d/com.herman.duomark](https://chrome-stats.com/d/com.herman.duomark)

## Overview

- **ID:** `com.herman.duomark`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Dongfu He
- **Category:** PHOTOGRAPHY
- **Downloads:** 97
- **Version:** 1.1
- **Last updated:** 2026-06-09
- **First published:** 2026-06-09
- **Publisher country:** CN
- **Size:** 5.61 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.herman.duomark)
- **Website:** [https://hedongfu.github.io/app-privacy-policy/duocam-privacy-policy.html](https://hedongfu.github.io/app-privacy-policy/duocam-privacy-policy.html)
- **Privacy policy:** [https://hedongfu.github.io/app-privacy-policy/duocam-privacy-policy.html](https://hedongfu.github.io/app-privacy-policy/duocam-privacy-policy.html)

## Description

DuoCam helps you record once and keep more than one useful video version.<br><br>Use Dual Format mode to record a single source video and export synced portrait 9:16 and landscape 16:9 MP4 files. Frame the vertical view while recording, check the 16:9 preview, then create one or both formats after recording. Timing, audio and motion stay matched, so the files are easier to edit together.<br><br>DuoCam also includes front/rear dual camera recording on supported devices. Record the front and rear cameras at the same time, save separate MP4 source files, and optionally create a picture-in-picture or split-screen video without replacing the originals.<br><br>Key features:<br>- Record once for portrait 9:16 and landscape 16:9 outputs<br>- Export portrait MP4, landscape MP4, or both<br>- Adjust the 16:9 crop before export<br>- Record front and rear cameras together on supported devices<br>- Save separate front and rear MP4 source files<br>- Create picture-in-picture or split-screen videos from front/rear recordings<br>- Choose camera, quality and frame-rate options when supported<br>- Keep recordings on your device unless you choose to share them<br><br>Device notes:<br>Dual Format export, front/rear dual camera recording, quality options, frame-rate options, audio and export behavior depend on your Android device, camera hardware, available storage and permissions. When a feature is not supported, DuoCam shows the available options instead of forcing unavailable capture.

## Rankings

- #1,992,155 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.CAMERA`
- `android.permission.INTERNET`
- `android.permission.RECORD_AUDIO`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.herman.duomark.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.herman.duomark)