Comment 1 for bug 859126

Herman Robak found out that dvgrab overwrites the file in-place. Since Stopmotion reads the capture file asynchronously, it will sometimes read a partially overwritten file, hence the partially gray image.
It should rather write to a temporary file first, then rename it, so the capture file instantly changes from one image to the next.
In 2007 dvgrab added an "use jpeg temp" option (false by default).

To enable it add

  -- jpeg-temp dvtemp.jpeg

after

 --jpeg-overwrite

in the start deamon line of the Stopmotion configuration window for dvgrab.