First check that your file is an acceptable format as per the following link:
If it is an acceptable format and you're getting a codecs error in NVivo, this can happen due to a lack of proper video/audio codecs on your Windows Operating System. A codec compresses or decompresses media files such as songs or videos. Windows Media Player and other apps including NVivo for Windows use codecs to play and create media files.
To try and resolve the issue you're experiencing in NVivo I suggest that you download and install a codec pack such as any of the ones listed at:
After installing the codec pack, close out of NVivo and reopen it and try importing the file again.
If the issue persists after installing the codec pack, try another codec pack and if that does not resolve your issue, please provide us the file that you are trying to import for investigation via a support request form at:
QSR International Pty Ltd
2nd Floor, 651 Doncaster Road | Doncaster Victoria 3108 Australia
Find answers to your support questions or raise new support requests online at: