Merge video, audio, images into one video

We offer a variety of video encoding features like optimizing for different devices, merging, injecting ads, changing audio tracks, or adding company logos.

The /video/merge Robot composes a new video by adding an audio track to existing still image(s) or video.

This Robot is perfect for music studios that want to turn music tracks into videos without manually recording one. Use an album cover instead and export the result to your video-sharing website of choice. We also offer the replacement of the audio track on a video.

What can I do with this?

Our /video/merge Robot can be used in combination with other Robots, to create powerful workflows unique to your use case. For inspiration, here are example scenarios, with explanations and code for all platforms, that you can also try live on our website:

It's getting more and more popular to have instantly viewable animated GIF previews of videos these...
Slideshows are a great way for you to show off your images with a personal flare....
In this demo we replace the audio of a video by a new track.

And a few more:


This Robot supports parameters such as preset, width, height, resize_strategy, background and 5 more to influence its behavior. Read all about the technical details in its docs.

Blog posts

We wrote the following posts about the /video/merge Robot on our blog:


Transloadit is a SaaS with a subscription model.

Our /video/merge Robot counts towards your Plan's data at a normal rate. Assuming an average input video of 80MB and an output of 48.0MB, here's what it would approximately cost to merge videos per Plan:

Plan Price Costs per file within your Plan Overage Fee
Sandbox (2GB) Free $0.0
to merge 16 videos
Startup (10GB) $49/month $0.613
to merge the first 80 videos
Small Business (30GB) $99/month $0.413
to merge the first 240 videos
Medium Business (150GB) $249/month $0.208
to merge the first 1200 videos
Enterprise 📞 - N/A

Just like with your mobile plan, pricing goes down when you commit to larger monthly volumes. When you reach your plan's limit, we'll continue to service you, but remind you to upgrade to more cost-efficient plans. This is unless you explicitly set budgets. You can change plans at any time. More info and available plans on our Pricing page.

Don’t just take our word for it

  • “I'm not usually one for fanboy-ism but Transloadit is one service I would recommend without hesitation. Their product and customer support is outstanding.”
    Dave Perrett, CTO at Shuttlerock
  • “Having a solution for both uploading and transcoding has been a godsend for the current scale that we are at five years after first choosing Transloadit.”
    Jon Wong, Engineer at Coursera
  • “Using Transloadit saves development and maintenance. Being able to focus on our product instead of reinventing the wheel cannot be understated.”
    Matt Sumner, Developer at thoughtbot