Hello all, I am using Tracker to try and measure strain with respect to applied load (time syncing Tracker's analysis of a video file with load data). The displacements due to load are quite small, so I am shooting video at 4K and 30 frames per second, to maximize detail and let AutoTracker pick out small movements of my markers.
I have tested Tracker with smaller files at 4K (up to about 150 MB) with no problem, but the full experiment is over four minutes long and 3 GB in file size. So, I suppose, getting back to the topic of the thread, does Tracker have a cap on how large files can be before the software will not analyze them?
There's no built-in cap on file size but Tracker can become very slow with large files and image dimensions. I recommend you experiment with breaking the video into shorter segments and then combining the data.
> Re: Initial question > > Hello all, I am using Tracker to try and measure strain > with respect to applied load (time syncing Tracker's > analysis of a video file with load data). The displacements > due to load are quite small, so I am shooting video > at 4K and 30 frames per second, to maximize detail > and let AutoTracker pick out small movements of my > markers. > > I have tested Tracker with smaller files > at 4K (up to about 150 MB) with no problem, but the > full experiment is over four minutes long and 3 GB > in file size. So, I suppose, getting back to the topic > of the thread, does Tracker have a cap on how large > files can be before the software will not analyze them > > > Thank you.
Thank you for the reply. Similar to your solution (as far as reducing file size), I decided to use the time lapse mode on my camera to shoot fewer frames (as the motion is very slow) while retaining a sufficiently high resolution for AutoTracker to reliably track the points I was interested in. It worked beautifully.
As an aside, special thanks for programming Tracker -- it has made data analysis on this project remarkably easy.
