Video, audio and image utilities.
The small jobs around AI output: trim a clip, swap its audio, add captions or a watermark, or convert a file. Each one is an API call like any model, so you can chain them in your own code or a workflow.
What the utilities are for
Generated media rarely ships exactly as it comes out of the model. These tools do the finishing work, and since they use the same API, a pipeline can call a video model and then trim, caption and resize the result without leaving Wiro.
Cut and join clips
Video Trim cuts a segment by timestamps, Video Merge joins several clips into one, and Video Loop repeats a clip into a longer file.
Fit every platform
Video Resize reframes a video to a new size or aspect ratio with padding, cropping or a blurred background, and Video Crop cuts to a fixed box without scaling. Video Picture-in-Picture puts a second clip in a corner of the first.
Sound
Video Audio Merge puts a new soundtrack on a video or mixes it with the original, Video Audio Extract pulls the audio out as MP3, WAV and other formats, and Video Audio Remover makes a silent copy. For audio files there are Audio Trim, Audio Merge and Audio Fade.
Captions, watermarks and thumbnails
Video Caption burns in word-timed subtitles, Video Watermark adds a logo or text, and Video Thumbnail Extractor saves up to 20 still frames.
File conversion
Fast Video Converter, Audio-to-Audio Converter and Image Converter change formats and compression, for example to WebP or AVIF images or smaller MP3 files.
Frequently asked questions
How much do the utilities cost?
Most of them cost $0.001 per run. The price for each tool is on its page.
Can I run them on a model’s output?
Yes. Pass the output URL of one task as the input of the next, in your own code or in a Wiro workflow.
Do I have to upload my files?
You can upload a file in a multipart request or pass a public URL, including the output URL of an earlier Wiro task.

















