THE SHORT ANSWER
Open your file manager, select the video, use “Open with,” and choose NB Player if it is listed. If playback fails, try the same file from the app library and check access permissions and whether the file is complete.
Two ways to open the same file
Start from the NB Player video library or from your file manager. The second route is useful when browsing a folder or receiving a new file. Your file manager keeps the original file. Choosing a different player does not move it or automatically convert its format.
Open the file from Android
Go to the folder containing the video, select it or open its menu, and look for “Open with” or the equivalent option in your file manager. Choose NB Player if available. Menu names and chooser screens vary between Android versions and device makers. Use the option that selects which app opens the file.
If NB Player is not listed
First check that the app is installed and the item is actually a video file. Another app may supply an incorrect file type or a link rather than the file itself. Try saving a local copy and opening it from a file manager, or locating it in the library. Do not randomly change extensions: renaming does not convert the codec.
If the file appears but cannot be accessed
The file may have moved or been deleted since indexing, or access may be limited to selected media. Review the app’s media permissions in Android settings, then select the file again from its current location. On newer systems, granting access to selected files is different from allowing the full library.
Separate access problems from codec problems
If the app cannot read the file, check location and access first. If playback begins without picture or sound, one of its tracks or codecs may not be supported on the device. Compare with a file you know works. Record your device and file format when documenting a problem.
A quick checklist
- Check that the item is a real local file, not just a link.
- Try the file manager’s “Open with” action.
- Compare with opening it from the library.
- Check media access before assuming the file is damaged.
Sources and review
Based on local prelaunch version 0.6.3. Android menus can vary by device.
Related guides
- How to play video and audio on Android without internet
- Background audio, playback controls and the sleep timer in NB Player
- Organize local videos and music with folders, search and favorites
- Add Arabic subtitles and adjust text encoding and timing in NB Player
- Video plays without sound on Android: what to check first
