We are running a private instance of webpagetest. Our scripts measure multiple steps without using the combineSteps command since we want to get seperated results for each step.
Unfortunately, our scripts generate broken videos. It seems that the screenshots for the videos are overriden by the next screenshot (of the next step) with the same time. Is there any way to extend webpagetest that a valid video is generated even if we use multiple steps without combining them?
An example test result is stored at http://www.webpagetest.org/result/130613_WZ_CK9/ and the broken video filmstrip is found at http://www.webpagetest.org/video/compare.php?tests=130613_WZ_CK9-r:1-c:0
The following script where used to generate this result:
navigate www.amazon.de
navigate www.ebay.de
navigate www.google.de
The resulting video we expect should first show the loading of www.amazon.de, then the loading of www.ebay.de and finally, the loading of www.google.de. But webpagetest generates a video which is a mix of all three pages.