Duck Entertainment Help
The big one — 4K

4K on every device — locked, not auto

"Auto" quality picks based on a speed test, not your TV. It will quietly downscale a 4K movie to 1080p mid-show. These steps force each app and each device to play at 4K.

Before you start

Set each device's display output to 4K first (TV, box or stick), then set the app's playback quality to 4K / max. If either one is on auto, you won't get 4K. Also turn subtitles off for 4K — burned-in or PGS subs can force a transcode and drop quality.

Roku

Roku

  1. Home → Settings → Display type

    Set to 4K HDR (or 4K UHD). Do not leave it on "Auto detect."

  2. Settings → Display type → Auto-adjust display refresh rate

    Set to On so 24/30/60 fps content matches the source.

  3. Settings → System → Advanced display settings

    Make sure HDR mode is Auto, not Off.

  4. Open Ducking IPTV / your player → quality

    Pick 4K or the highest bitrate, never "Auto" or "Best match."

Apple TV 4K

Apple TV 4K

  1. Settings → Video → Format

    Set to 4K HDR10 or Dolby Vision if your TV supports it.

  2. Settings → Video → Match content

    Turn Match Frame Rate and Match Dynamic Range On.

  3. Open Infuse / SenPlayer / HamHub / Ducking IPTV

    Set Library Mode Off (Infuse), and playback quality to 4K / Original, not Auto.

Fire TV / Firestick

Fire TV / Fire TV Cube / Firestick 4K

  1. Settings → Display & Sounds → Display

    Set Display resolution to 4K UHD (2160p).

  2. Display → HDR

    Set to Auto (or HDR10 / Dolby Vision on supported TVs).

  3. Preferences → Data Monitoring

    Turn Off — it can cap video quality to save data.

  4. Open your player → settings → quality

    Force 4K / Max bitrate, disable Auto.

Nvidia Shield

Nvidia Shield TV / Shield TV Pro

  1. Settings → Display & sound → Resolution

    Set to 4K (2160p) at 60 Hz.

  2. Display & sound → HDR

    Set to Auto.

  3. AI upscaling

    Turn On for non-4K content so it still looks sharp.

  4. Open Emby / Plex / Moonfin → quality

    Lock to 4K / max bitrate, turn off adaptive downscale.

Chromecast

Chromecast with Google TV (4K)

  1. Settings → Display & sound → Resolution

    Set to 4K (2160p) at 60 Hz.

  2. Display & sound → HDR

    Set to Auto.

  3. Open your player → quality settings

    Force 4K, disable "Auto quality" and adaptive bitrate.

iPhone & iPad

iPhone & iPad

  1. Settings → Camera → Record video

    Set to 4K at 60 fps (so the device pipeline handles 4K).

  2. Open Infuse / SenPlayer / HamHub / Ducking IPTV

    Set Library Mode Off (Infuse), playback quality to 4K / High, not Auto.

  3. Cellular

    Make sure Allow 4K over cellular is On if you want 4K away from Wi-Fi (eats data).

Mac

Mac

  1. System Settings → Displays

    Set resolution to Default for display (native 4K on a 4K screen).

  2. Displays → HDR

    Turn On if your Mac and display support it.

  3. Open your player → quality

    Lock to 4K / Original, turn off auto quality.

Windows

Windows PC

  1. Settings → System → Display → Display resolution

    Set to 3840 × 2160 (4K).

  2. Display → HDR

    Turn On if your monitor supports it.

  3. Refresh rate

    Set to 60 Hz (or your panel's max).

  4. Open your player → quality

    Lock to 4K / max bitrate, turn off auto.

Android

Android phone & tablet

  1. Open your player (Emby / Plex / Moonfin / Ducking IPTV)

    Go to Settings → Playback → Video quality.

  2. Internet quality / streaming bitrate

    Set to 4K-200Mbps or max / unlimited. Do not leave on Auto.

  3. Maximum allowed video transcoding resolution

    Set to 4K.

  4. Subtitles

    Set subtitle mode to None for 4K playback — subs can force a transcode.

Web browser

Web browser

  1. Open the player in your browser

    Click the quality / settings gear in the player controls.

  2. Quality selector

    Choose 4K / 2160p. Do not select "Auto."

  3. Bitrate

    Set to Max / unlimited if available.

App-specific 4K

App-specific 4K settings

Emby 4K

Settings → Playback → Video Quality → Internet quality: 4K-200Mbps or max. Max transcoding resolution: 4K. Subtitles: None.

Emby guide →

Plex 4K

Set quality to Original (4K), enable Direct Play, subtitles None — avoids the 2-stream transcode limit.

Plex guide →

Moonfin 4K

Stream quality 4K / Max, adaptive downscale Off, auto quality Disabled, bitrate cap Unlimited.

Moonfin guide →

Next: app-specific setup

Each app has its own quality menu. Pick yours below.

Emby 4K settings Plex 4K settings Moonfin 4K settings