If you have videos of the same situation from different angles, you might want to combine the videos into a container file to easily switch between the angles. In order for this to work you need to synchronize the videos and make sure they have the same length. If you want to switch the audio
1. Open Handbrake 2. Find the file/folder with files you want to convert, click “Open” 3. Set format to “MP4”, set Framerate to “Same as Source”, click on “Constant Framerate”, then click “Browse” 4. Depending on the version of Handbrake you might have to save the
This software can create container files where you have several video or audio channels. It’s free and available for Mac and Windows. You can get it here: https://mkvtoolnix.download/