If you uploaded a video to Facebook and the audio got muted, that's because your video may have violated Facebook’s music guidelines for videos that contain music.
Facebook’s music guidelines say videos with music need a visual component, and the music shouldn’t be the main purpose of the video. If your video is only a still image, like cover art that never changes, Facebook may mute the audio or block the video.
OK, but what should I do now?
Option 1: Update your video so the visual changes and is not just an image.
Option 2: Post a *story* instead of a video, then attach your music to the story.
When you post a Facebook or Instagram story, you can use a single image and add your track with the Music sticker. Your releases distributed through Proton are available in Facebook’s and Instagram’s music libraries from the pre-order date.