Did a test of 2 vid files. Loaded files in the interface file fine, but the merged file only showed the top video (loaded in the interface) and remained black for what seemed like an extra long video.

This is a useless app. Check out the support link on this page, link towards the upper right, before buying. It says it all, if you can read Chinese. Tried to merge 15 clips that totalled an hour. From the start the app’s counter jumped from 0% to !00% in about 2 seconds. 18 hours later the cog wheel is still spinning. Thought perhaps it might be to many files or to long so I picked two clips (.MOV files) totalling about 1 minute. Same thing! Spinning cog 3 hours later.

The only way it seems to work is by checking the option to Customize Output Profile which causes it to encode the merged file. If all the parts you are putting together are the same then this should not be required but if you don’t check that option the program crashes as soon as merge is clicked. This definitely needs to be addressed.The chapter markers are lost in the merge. Not sure if this is only for the Customize Output Profile option is used because it doesn’t work without it but in any case the chapter markers should be retained. Even better would be if you could add/edit them before exporting.It would also be helpful to have the ability to import only part of a file.

Works great and does what it says. Throw in all the videos you want to merge, order them, and click merge. It will then ask where you want to save and will export in a few seconds to the location you specified and format your video is in.