I made an animation (opentoonz software) of a character with his mouth talking. I incorporated the sound into it. At rendering, the character speaks. I can play the scene in opentoonz: he talks. But when I read the created file on my hard drive, the video has no sound!
On the other hand, when I convert the “.AVI” into “.MP4” with the MediaCoder software, the sound reappears.
I think this is a bug in OpenToonz …