Write metadata to media

We can enrich media files with metadata and generate playlists for them.

The /meta/write Robot writes metadata into any file that supports it.

What can I do with this?

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

Writing metadata to files is easy with the /meta/write Robot. You just need to supply the...


This Robot supports parameters such as data_to_write, ffmpeg_stack to influence its behavior. Read all about the technical details in its docs.

Blog posts

We wrote the following posts about the /meta/write Robot on our blog:


Transloadit is a SaaS with a subscription model.

Our /meta/write Robot counts towards your Plan's data at a normal rate. Assuming an average input file of 1.2MB and an output of 1.2MB, here's what it would approximately cost to write files per Plan:

Plan Price Costs per file within your Plan Overage Fee
Sandbox (2GB) Free $0.0
to write 853 files
Startup (10GB) $49/month $0.011
to write the first 4266 files
Small Business (30GB) $99/month $0.008
to write the first 12800 files
Medium Business (150GB) $249/month $0.004
to write the first 64000 files
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