How To Merge or Join Videos with Avidemux

If you have two videos that have the exact frame rate and parameters, then you can join them together using Avidemux. 

  1. Open Avidemux.

  2. Click on the File menu and then click the Open... command.

  3. When the Select Video File... dialog box appears, select the first video file and then click the Open button.

  4. After the first video loads, click on the File menu and then click the Append... command.

  5. When the Select Video File to Append... dialog box appears, select the second video file and then click the Open button.

You will notice the total time of the video is now the time of the two video files. In my example, the time went from 4:59.250 to 9:58.583.

  6. Now select the Output Format. The default is set to a Mkv file extension. You can change it to MP4 or a variety of other formats. I selected
       the MP4 file extension by clicking on MP4 Muxer.

  7. Click the Configue button in the lower left. This will bring up a MP4 Muxer dialog box to allow you to select the file format, select the aspect
       ratio, and/or rotate your video. If your original video files were 16:9 make sure that is the value next to the Aspect Ratio (DAR) settings.
       You can select to Force aspect ratio if the output looks different than you expect. Then click the OK button.

  8. To combine the two video files, click on the File menu and then on the Save command.

  A Select File to Save dialog box will appear allowing you to name your new video file. Click the Save button to start the combining process.

  You will see confirmation dialog box or Info dialog box when the process completes.

You can see that I have my two original video files and the combined video file in the same folder.

The combined video worked great!

I hope this helped you if you were looking for a way to combine two or more videos together.

Take care!

Sep 3, 2019