Stainless.
The video could have been lost if the app was switched to another app while recording.
To successfully capture video and data:
1. Start the app and make sure the settings are what you want as far as what data is to be recorded (The settings button).
2. When ready, click the green record button.
3 When you want to stop the recording and save the video, click the red stop recording button There will be a message that says "Saving Video" (warning - the video will not be saved if the app is switched to another one before the stop button is pressed.
4. The Videos screen is where all the recorded videos are stored. If you want them to appear in your camera roll of the iPhone memory (so you can view, upload, etc) click the video you want to view and a summary will be displayed. Here you can delete the video, preview it, or SAVE it to the camera roll. There will be a message that asks if you want to delete the video from the videos screen. Do this if you are done with the video and only want it view it from the camera roll. Once the video is deleted from the videos screen, the data file is gone too.
Just experiment taking short videos of anything and using the system.
Thanks for trying it out.
Don