Videos that are downloaded from sites like Youtube usually use the flv file extension. One of the easiest ways to join flv videos is with the help of the software program FLV Joiner. The portable software accepts multiple flv videos that can be added to the software’s interface.

The program sorts the video automatically by the time they have been added to the application but provides options to manually sort them to bring them in sequence if necessary. It will display information about the flv videos that have been added including audio and video codec used, playtime and name. The total size and playtime of all flv videos in the queue is also displayed.

A click on the Join button will join all flv videos in the queue in the exact sequence that they are shown. The output is a single flv file that contains all the videos of the queue. The main advantage of this program over other software solutions is the simplicity. It cannot get easier than this. The developer should however consider adding the mp4 format in the near future to the program to provide the same video joining functionality for hd videos that are downloaded from those popular video hosting websites.

FLV Joiner is a free software for the Windows operating system that is available for download at the developer’s website.

I prefer to join those flv videos again if I happen to download the videos from Youtube. It simply means a better viewing experience because I’m able to watch it without having to click on the next part every ten minutes or add all videos to a playlist before starting the playback.

The easiest way to join flv videos is to use a software called Avidemux. With Avidemux you open the first part of the video and select Append from the file menu and select all additional parts of the video this way. They will simply get appended to the previous part(s) and you can use the Save video function to save the joined video which contains all parts.

A good indicator that a part was added is to look at the playtime of the video which should increase by about ten minutes for every part that you add to it. The video is saved again as a flv files and the procedure does not take longer than a few seconds if you save them as flv as well.

You could also convert them to avi for instance by assigning the avi file extension to the filename that you want to save.