[OSM-talk] Interleaving GPS traces with video?

[Shaun McDonald]

On 29 Mar 2010, at 23:16, Gregory wrote:

> 
> 
> On 29 March 2010 14:52, Laurence Penney <lorp at lorp.org> wrote:
> Thanks a lot. I was hoping, I guess, that there was some standard for simply whacking a GPX file inside an MPEG4 container, and maybe even a viewer for such files... Would be doable to make a system that relies on parallel files, i.e. a GPX of the same name as the video file, and a viewer that would plot a marker on a map as the video progressed. The GPX could be trimmed to match the start and end of the video, thus avoiding any video timing issues.
> 
> A really cheap/cheat way of doing it would have your gps record every X seconds (rather than X distance, or other varying amount). Display a map with a marker, and make it move to the next location(taken from the trimmed gpx file) every X seconds. Then you have some way of triggering your map animation to start and your movie to start at the same time with one button.
> I number of problems can be found in this (such as the movie player being slow to play, or the user pausing the movie), but as I said, it is a cheat method.
> 

Here's an example of using a GPS trace to show the current location of a video (whipping it out my back pocket):
http://www.trackmyjourney.co.uk/index.php?page=trackvideo&trk=36912

Shaun


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