The model can preserve the original reference audio when the template includes it. If the platform strips or mutes the audio, add the licensed sound inside the social app before publishing.
Keep the original audio
VideoBulin47 submits the template with an audio-preservation flag. That tells the provider to carry the reference sound into the generated file.
If the file has no sound
Download the MP4, open TikTok, Reels, or Shorts, and add the available trend sound from the platform library. This also keeps you inside the app's music licensing rules.
Check the export
Play the downloaded file before posting. Some phone galleries mute videos by default. Check the device volume and the file's audio track before generating a second version.