Once you have all of your animation scenes, music, and sounds, you will put it all together in a video editing program. Remember, you have to render your animation scenes into an MP4 file, and your music into a wav or MP3 file before you can import those files into your video editing program.
In the video editing program, you can add text, images, credits, transitions between scenes, effects, and all types of other stuff. Another thing you can do is adjust the volume levels of your audio like the voices and music. You can also make cuts to your files, speed up or slow down your scenes. Also you can add captions for your project. These editing programs have so many awesome features.
There are two free editing programs I recommend. Those are Davinci Resolve and CapCut. These two programs are robust with features. Both of the programs are compatible with Mac and Windows. Davinci Resolve is also compatible with Linux. There is also an IOS version for both programs.
Davinci Resolve has a higher learning curve. CapCut is more user friendly. Both of these programs are loaded with features that you would find on professional, paid applications. It is a good idea to watch tutorials on Youtube about these programs. Youtube is where all the education is at. Press that statement into your mind.
Click here for my animation tutorials.