# audio2video: Convert MP3 into MP4 with Images

> audio2video (Convert MP3 into MP4 with Images) is a 1001fx API function in the group Audio & video: POST https://api.1001fx.com/audiovideo/audio2video, 4 credits per minute (minimum 4). It works as a ready-made module in Make and n8n or as a plain HTTP call.

Converts an MP3 into an MP4 video with a thumbnail and images for given durations. The result is a URL to the MP4, available for 48 hours.

- Group: Audio & video
- Endpoint: `POST https://api.1001fx.com/audiovideo/audio2video`
- Authentication: header `X-API-KEY: YOURSECRETAPIKEY`
- Content type: application/json
- Credits: 4 credits per minute (minimum 4)
- Ready-made in: Make and n8n
- Docs: https://1001fx.com/functions/audio2video

## Parameters

- `url` (string, required) – Audio File URL: The URL of the audio file. You can use 1001fx uploadasset for temporary asset upload.
- `images` (array<object>, required) – Images: Array of images to show in your video. Notice: The length of your video will be the sum of your video durations. It is recommended that all your images should have the same aspect ratio.
  - `imageUrl` (string, required) – Image URL: The URL of an image to show in your video. You can use 1001fx uploadasset for temporary asset upload.
  - `duration` (number, required) – Duration: The number of seconds this image should be shown.
- `thumbnailImageUrl` (string, optional) – Thumbnail Image URL: The URL of the thumbnail image. You can use 1001fx uploadasset for temporary asset upload.

## Use cases

- Turn a podcast episode into a video with cover images for YouTube
- Create a video from a voice-over and a series of product photos
- Publish audio recordings on video platforms that do not accept MP3 files

## Example: Convert MP3 into MP4 with Images

```bash
curl -X POST 'https://api.1001fx.com/audiovideo/audio2video' \
  -H 'X-API-KEY: YOURSECRETAPIKEY' \
  -H 'Content-Type: application/json' \
  -d '{"url":"https://api.1001fx.com/testdata/jingle.mp3","images":[{"imageUrl":"https://1001fx.com/_next/image?url=https%3A%2F%2Fprod-1001fx-public.b-cdn.net%2Fmisc%2F1678977739_Changelog3.png&w=828&q=75","duration":2},{"imageUrl":"https://1001fx.com/_next/image?url=https%3A%2F%2Fprod-1001fx-public.b-cdn.net%2Fmisc%2F1680622414_1001fxMakeJS.png&w=828&q=75","duration":2},{"imageUrl":"https://1001fx.com/_next/image?url=https%3A%2F%2Fprod-1001fx-public.b-cdn.net%2Fmisc%2F1680511208_Charts-Blogpost.png&w=828&q=75","duration":2},{"imageUrl":"https://1001fx.com/_next/image?url=https%3A%2F%2Fprod-1001fx-public.b-cdn.net%2Fmisc%2F1679924358_AirtableImages.png&w=828&q=75","duration":2},{"imageUrl":"https://1001fx.com/_next/image?url=https%3A%2F%2Fprod-1001fx-public.b-cdn.net%2Fmisc%2F1679501411_speakerimage17.png&w=828&q=75","duration":2},{"imageUrl":"https://1001fx.com/_next/image?url=https%3A%2F%2Fprod-1001fx-public.b-cdn.net%2Fmisc%2F1679475802_1001fxMake_Live.png&w=828&q=75","duration":2},{"imageUrl":"https://1001fx.com/_next/image?url=https%3A%2F%2Fprod-1001fx-public.b-cdn.net%2Fmisc%2F1679329895_Podcast_Ad_Checker1.png&w=828&q=75","duration":2}],"thumbnailImageUrl":"https://api.1001fx.com/testdata/image.jpg","videoResolution":{"width":1280,"height":720}}'
```

## FAQ

**How long is the resulting video?**

The video is as long as the sum of the durations of your images. Each image is shown for the number of seconds you set.

**How do I pass the audio and image files?**

As public URLs. If your files are not online yet, upload them with the 1001fx function uploadasset and use the returned URLs.

**How long is the MP4 available?**

The result is a URL to the MP4 file that stays available for 48 hours. Download or move the file within that time.