I don't understand how do you mean:"after use of WinMp4Extract program"?
WinMp4Extract just READS data from the mp4 video. Program doesn't change video in any way, so there is no way that WinMp4Extract can influence on the existance of the GPS data in mp4 video just by reading it.
Thanks for your response. i want to say "inside A800 mp4 file there is no gps data recorded" for use in dashcam viewer. The data are in a separated file GPSDataxxxx.txt in folder named ".gps". Another problem, the gps position is incorrect. https://drive.google.com/file/d/1qWve7Y6yKrX_JVVy6nc9JloFv-3zwK40/view?usp=sharing. Thanks.
I understand now. Can you please share one of the videos and corresponding file with GPS data (GPSDataxxxx.txt)? I don't have A800 camera but I would like to add support for that camera to WiMp4Extract. To do that I need some testing videos.
Thanks for the job. The video https://drive.google.com/file/d/136m6VgmtFfwyiWApRPWVnJ3KyWFhFzJo/view?usp=sharing The GPS data https://drive.google.com/file/d/1S6b8ptdkGULm6a3q2dbphyKU23qf97qu/view?usp=sharing