Opening an NBR File

The NBR file type is primarily associated with NCBI Virus Neighbor Analyzer.

NBR	File extension: NBR
	File type:	data file

What is an NBR file

NBR files mostly belong to NCBI Virus Neighbor Analyzer. NBR files are used in different contexts. The primary use is as a virus neighbor data file produced by the NCBI Virus Neighbor Analyzer. This file stores information to compare virus sequences and lineages.

• Virus Neighbor Data: Contains data for virus analysis. Open these files with the NCBI tool. More details are available at the NCBI Virus Neighbor Analyzer webpage.
• Cisco Webex Recordings: Some NBR files use an MP4 structure to hold video recordings from Webex meetings. They are also known as Nero BackItUp backup files. Visit the Cisco Webex webpage for more information.
• Novabench Benchmark Results: Other NBR files are formatted as JSON to store benchmark results generated by the Novabench tool. Check the Novabench webpage for details.

FilExt.com notes: Knowing the origin of your NBR file is key. If it comes from virus data analysis, use the related NCBI software. If it is from a meeting recording, open it with Cisco Webex tools. For benchmark results, a standard JSON viewer or the Novabench software may work.

How to open an NBR file

You need a suitable software like NCBI Virus Neighbor Analyzer to open an NBR file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your NBR file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a NBR file directly in the browser:. Just drag the file onto this browser window and drop it.

Online NBR Text Viewer

Choose your .nbr file to analyze

or drag and drop it here

Online File Viewer

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NBR file format:

A file format defines how the data in the file is structured. The file format can be determined based on the file extension and the signature (the first few characters of a file). Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. When there is a problem with a file, the first step to solving it is to determine the file format. Our evaluation of the NBR files is as follows:

The NBR file extension is rarely used and includes various formats for various programs. The two most common formats are as follows:

• 35% of all NBR files have the same signature ## Neighbors data for complete genomes: . The contents of these files are easily readable with a text editor. Most of these files are 11 MB to 30 MB in size. The file type was created recently. Certain words are almost always found in the files, such as "Host", "Neighbor", "Representative", "Segment name", "Selected lineage", "Taxonomy name", ## Columns, ## Neighbors data for complete genomes: Viruses (taxid 10239), NC_003663, HQ420896 and human,vertebrates. The following filename is common: taxid10239.nbr.
• 15% of all NBR files use the popular MP4 file format. MP4 is a multimedia container format used to store video and audio and allows streaming over the Internet. They consist of unreadable binary data. NBR files are between 96 MB and 750 MB in size. The keywords \tkhd, lmvhd, ftypisom, isomiso2avc1mp41, trak and moov are typical for these files. The following filename is common: op_movie14_stamp.nbr. Files like these have the following tags: movie and stamp.

All other NBR files (50%) have no consistent format, the following 3 formats can be found: JSON. Just click the "Choose your .nbr file to analyze" button on this page to find out what your NBR file is.