Posted 11 December 2016 - 06:07 PM
Have you contacted support for the Leef iBridge and asked them if there is anything that can be done? They are likely the best source for an answer. I say this because they likely will have a better idea if there is actually audio that can be "recovered". It is possible that the program that is uses just did not include the audio as part of the file. If so, then there is likely nothing that can be done.
About the only other thing to try is to import a copy of the video into a video editing program that might be able to show if there is a audio track/waveform in the video file. I know that iMovie on a Mac can show the audio track/waveform of any audio including in a video clip. Don't know if iMovie for iOS will do the same. And I don't know of any Windows program that will do it, but I have no doubt there are many, even some that are free. You might need to post another question to say the Audio and Video form asking for such a program on Windows if you have a Windows computer.