Export Songs as MP4 Video

Many creators need an MP4 version of their finished song for platforms that don't accept MP3 or WAV uploads. The request is to allow users to export a generated song as an MP4 video file directly from Songer. The video could include a simple visual background, album artwork, waveform, or synchronized lyrics, making it ready to upload to platforms that require MP4 without needing third-party editing software. This would make it much easier to share songs on social media, video platforms, and other services that require video formats instead of audio-only files.