I have 15 videos in MPG-4 and in total all together are 1 hour of video but they separated and I would like to make just one video of the 15 video I have.
Why you have posted here I have no Idea Jerry, let alone resurrect a very old thread, but there is a basic movie editing package already installed in Windows 10 that has all basic functions if that is all you need. There is no need to use an online editor.