First, when you have one of those problems, don't use the digital voice recorder or camcorder any more, nor should you try to put new data into the memory card of your digital recorder. This is because the deleted audio and video files don't disappear permanently and immediately unless they're overwritten by new data. Overwriting will cause them to be deleted forever and unrecoverable.
Then how can you recover files from your Digital Camcorder or Voice Recorder? You can't do it without the help of a data recovery tool. The best way is to try a professional and reliable data recovery program. That should allow you to retrieve deleted videos and music that you've lost.
If you are using Windows, Recoverit Data Recovery will be your best choice. It's not just a photo recovery program, but also recovers deleted videos and audio from digital media including voice recorders and camcorders. You can also recover photo files.
If you are using Mac, then use Recoverit Data Recovery for Mac. It can also recover videos, audio or music from digital camcorder and voice-recorder on Mac.
Free download Wondershare Data Recovery on your computer, connect your digital voice recorder or camcorder to a computer via a USB port cable if your devices is equipped with a hard drive, or use a card reader if there is a memory card. Follow the next simple steps to perform digital camera data recovery.
To recover deleted files form digital camcorder, select the recovery mode "External Devices Recovery" to start.
Select digital Camcorder or Voice Recorder detected on the "External Removable Device" and click "Start" to scanning lost files.
If quick scan can't find your lost files, you can go to "All-Around Recovery" which will deeply search your lost files.
After scanning, you can preview recovered files such as Audio, Video and Photos from a Digital Voice Recorder. Click "Recover" to save.
Note: Don't save the recovered data on the original memory card again. Find another place for it, such as on the computer or other external disk, to ensure that the recovered files aren’t overwritten.