Just Player v0.216 - Clean FOSS ExoPlayer Video & Audio Engine

Technical Specifications & System Requirements

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Just Player for Android — Official Minimalist ExoPlayer 4K HDR Video Player APK

Just Player is an acclaimed, ultra-fast and lightweight free open-source video playback application developed by Alexander Kamyshnikov (moneytoo) for Android smartphones, tablets, and Android TV. Built around Google's native Media3 / ExoPlayer multimedia framework with zero third-party bloatware or advertising code, Just Player provides pure, unadulterated hardware-accelerated playback for 4K HDR10, HDR10+, HLG, and Dolby Vision video containers with bit-perfect digital audio passthrough (Dolby TrueHD, DTS-HD, AC3) and an installation size under 5 MB.

🌟 Core Architecture & Engineering Highlights

Just Player's design philosophy prioritizes pure video decoding performance, minimal CPU overhead, and native Android framework fidelity.

Native Google Media3 / ExoPlayer Hardware Core

Rather than bundling heavy, custom-compiled C++ multimedia libraries, Just Player utilizes the latest official Google AndroidX Media3 / ExoPlayer engine. Operating directly with native Android MediaCodec hardware video decoders, it offloads 4K and 8K 60FPS video decoding (HEVC, AV1, VP9, AVC) to the device GPU with sub-millisecond initialization latency and near-zero battery consumption.

Advanced HDR10+ & Dolby Vision (Profile 5, 8, 7) Tone Mapping

Just Player features native support for modern high dynamic range color pipelines. It automatically detects and renders HDR10, HDR10+, HLG, and Dolby Vision (Profiles 5, 7 MEL/FEL, and 8) video streams, correctly mapping color luminance to your display's peak nits without washed-out highlights or dark crushing.

Bit-Perfect Audio Passthrough & Auto Frame Rate (AFR)

For home theater enthusiasts and Android TV boxes connected to AV receivers, Just Player supports Bit-Perfect IEC Audio Passthrough. It bitstreams uncompressed Dolby TrueHD with Atmos, DTS-HD Master Audio, E-AC3, and AC3 streams over HDMI with zero operating system resampling, featuring seamless Auto Frame Rate (AFR) display refresh rate synchronization.

⚙️ Key Capabilities & Workflow Features

Just Player delivers a distraction-free, high-performance video viewing environment.

1. Ultra-Lightweight & Instant Startup Latency

With an installation size under 5 MB, Just Player launches in less than 0.10 seconds, immediately playing local video files or streams from file managers and web browsers with zero lag.

2. Intuitive Touch Gestures & Subtitle Sync

Control playback effortlessly on mobile devices: vertical swipe on the left for brightness, vertical swipe on the right for volume, horizontal swipe for frame-accurate seeking, and pinch-to-zoom to adjust canvas aspect ratios (Fit, Stretch, 100% Original).

3. Comprehensive Subtitle Styling & Font Customization

Render external and embedded SSA/ASS, SRT, TTML, and VTT subtitles with customizable font typography, font size, text colors, background opacity, and timing delay synchronization sliders.

4. Dedicated Android TV Interface & CEC Remote Navigation

Full native support for Android TV, Google TV, and Fire TV sticks, enabling seamless D-pad remote navigation and HDMI-CEC television remote synchronization.

🚀 Performance Benchmarks & Resource Impact

Benchmarking Just Player 4K video playback speed and memory footprint on an Android 14 device:

📊 Comprehensive Head-to-Head Comparison Matrix

📋 Technical Hardware & System Requirements

Just Player runs with exceptional efficiency across all Android smartphones, tablets, and TV devices:

🛠️ Step-by-Step Installation & Quick Setup Guide

Follow this guide to install and use Just Player on Android:

1. Downloading and Installing Just Player

1. Download the verified Just Player APK package (just-player-exoplayer-v0.x.x.apk) from FileCobra.
2. Tap the file to install and open Just Player.

2. Playing Videos from File Managers

1. Open any video file using your favorite file manager (e.g., Solid Explorer, ZArchiver) and select Just Player as the default player.

3. Configuring Audio Passthrough & Subtitles

1. While playing a video, tap the screen to access the control overlay.
2. Tap the Audio icon to select audio tracks or enable Audio Passthrough, and tap Subtitles to customize text styling!

🔒 Security, Privacy & Open-Source Integrity Analysis

Just Player provides the highest standard of mobile software security:

• 100% Free & Open Source: Licensed under GNU GPLv3 with full public source code inspection on GitHub.
• Zero Internet Permissions: Contains zero network communication code; Just Player operates 100% offline.

❓ Frequently Asked Questions (FAQ)

Can Just Player play 4K HDR and Dolby Vision videos?

Yes! Just Player natively supports 4K HDR10, HDR10+, HLG, and Dolby Vision (Profiles 5 and 8) using hardware GPU decoding.

Does Just Player support bit-perfect audio passthrough to AV receivers?

Yes! On Android TV and supported devices, Just Player supports IEC passthrough for Dolby TrueHD, DTS-HD, E-AC3, and AC3 surround sound.

Does Just Player contain any advertisements or tracking?

No! Just Player is 100% free open-source software with zero ads, analytics, or tracking permissions.

Key Highlights & Features

• ExoPlayer & Media3 High-Performance Engine
• HDR10, HDR10+ & Dolby Vision Playback
• Complex ASS Subtitle Rendering
• Audio Passthrough (Dolby Atmos, DTS)
• Zero Ads, Trackers, or Bloat

Just Player UI & Interface Screenshots

How to Install & Verify Just Player

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Frequently Asked Questions & Verification Guide