FFMPEG API

Create videos from images & audio, merge videos, add subtitles, split & trim audio, and convert videos to vertical format using FFMPEG

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Supported formats: PNG, JPG, JPEG
Supported formats: MP3, WAV, M4A

Videos will be merged in the order listed
If provided, this audio will replace the audio track of the final video
If provided, ASS subtitles will be burned into the merged video
If provided, the image will be added as a small watermark in the bottom right corner
Specify output dimensions (e.g., 864x480) to resize all videos to match. Videos will be scaled/cropped as needed.

The background/main video
The overlay video (will be placed on top)
Where to place the overlay video
Size of the overlay video
Choose audio source for the final video

URL of the audio file to split (MP3, WAV, AAC, etc.)
Split into 2-20 equal parts

Split audio into segments of a fixed duration. For example, a 66-second audio with 10-second segments will produce 6 segments of 10 seconds and 1 final segment of 6 seconds.

URL of the audio file to split (MP3, WAV, AAC, etc.)
Duration of each segment (1-3600 seconds)

URL of the video to add subtitles to
URL of the ASS subtitle file to burn into the video

Trim an audio file to your desired length. Perfect for creating shorter audio tracks for videos.

Provide the URL of the audio file you want to trim
Enter the length in seconds (e.g., 120 for 2 minutes)
Duration of fade out effect before audio ends (0 = no fade, e.g., 10 for 10-second fade)

Convert horizontal videos to vertical format optimized for mobile viewing. Automatically selects 3:4 or 9:16 aspect ratio with optional watermark.

Enter the URL of the horizontal video to convert
Optional: Add a watermark in the top right corner (PNG recommended)
Files are processed securely and automatically deleted after processing