Good questions.
Clear answers.

Google Play launch is being prepared. You can try the APK from the download section on the homepage; the available trial is version 0.6.3 for ARM64 devices. The Google Play link will be added when available.

Yes. NB Player is free and ad-free. No account registration is needed to play your local files.

The current build requires Android 8.0 or later. Some video and audio codec support varies by device, even when the Android version meets the requirement.

Yes, for files stored on your device that the app can read. Seeing a filename in a cloud service does not prove that the file has been downloaded and is available offline.

Playback depends on the container, the codecs inside the file and device support. We do not promise every format on every phone. Test the intended file and keep the original before converting.

Select the video, choose “Open with” or the equivalent action, then select NB Player if listed. Menu names vary by device and file manager. You can also open the file from the app library.

It may have moved, been deleted, lost access permission or not finished copying. Select it again from its current location and check media access. If only one file fails, the problem may be in that file.

Start with media volume, audio output and connected headphones. Try a known file and review audio track selection when multiple tracks exist. The device may not support the specific file’s audio codec.

Yes. After starting an audio file, return to the library or use another app. Playback controls are available in the media notification. Battery restrictions or force-stopping the app can affect the session.

The progress slider moves to another time within the track. Use your device’s volume buttons to change listening volume. Seeking does not change loudness.

Yes, in the playback tools. Check the selected option: stopping after a duration differs from stopping at the end of the track. The timer is not an alarm or audio recorder.

Yes. A playback speed control is available. Choose a pace suited to the content and restore the normal setting if it sounds too fast or slow. This does not modify the original file.

Open the video’s subtitle tools and choose a subtitle file from the device. Select one matching the video version. Embedded subtitle tracks are listed when available.

The text encoding may not match. Review external subtitle encoding and try the encoding that matches the file. A different font alone cannot repair incorrect encoding or damaged text.

Adjust subtitle delay gradually and test a short sentence. Try the other direction if the gap increases. If text drifts progressively away from dialogue, it may be for a different video version.

Subtitle options allow a local TTF or OTF font import and restoring the system font. Choose a readable size and contrast. A font does not change subtitle content.

Use a folder to browse a collection, such as a course or project, and search when you know a specific filename. Favorites help with frequently used items.

No. A favorite refers to the original file and is not a backup. Deleting the file or losing permission can prevent playback from an old list.

Check that copying finished and verify the location, then refresh the library. Review media permissions, especially if you allowed only selected files instead of the entire collection.

No. Organizing files and adding favorites does not create an independent backup. Keep another copy of important media in a location you choose and control.

No. You can play local files without creating an account or signing in. An account is not needed to open a local file.

It needs permission to list and read the video and audio files you allow. Android may offer selected files or broader access depending on the version. Choose the scope you want and review it in system settings when needed.

NB Player plays media locally and does not need to upload it to a streaming service for playback. The original file and access permission are still required.

No. NB Player plays your files; it is not a streaming catalog or a source for downloading content. Use media you own or have permission to use.