Audio Tools
Turn MP3 audio into an MP4 video with a blank solid-color background. Choose landscape, square, or vertical format at 1080p, 720p, or 480p, then export locally in your browser. Free to use with no account or card needed.
Drop MP3 audio files here
MP3 files only. Create blank-screen MP4 videos locally in your browser
Vidsembly helps creators turn ideas into finished video content, from draft to publish, in one place.
Some platforms and publishing workflows accept video but do not accept standalone MP3 files. Wrapping audio in a blank MP4 makes it possible to upload narration, podcast episodes, music drafts, lesson recordings, and voice notes without creating visual content.
The converter generates a solid-color video canvas for the full length of your MP3. It does not add text, artwork, animations, or branding, so the listener can focus entirely on the audio.
Use landscape for YouTube, presentations, and standard players. Square fits social feeds and compact embeds. Vertical works for mobile-first platforms. Choose 1080p for maximum detail, 720p for a balanced file, or 480p for smaller and faster output.
Audio can contain private meetings, student voices, client details, unreleased music, or draft narration. This converter creates the MP4 locally in your browser, which avoids uploading the source recording to a conversion server.
The exported MP4 uses H.264 video and AAC audio for broad compatibility. Because the image is a solid color, the video track compresses efficiently, although the result will still be larger than the original MP3.
Extract audio tracks from video files as MP3 downloads. Free to use with no account or card needed.
Combine multiple audio tracks into a single seamless file. Free to use with no account or card needed.
Increase volume levels or normalize audio for clearer playback. Free to use with no account or card needed.
Convert uncompressed WAV files to compact MP3 format. Free to use with no account or card needed.
