Skip to content
Switch branches/tags

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time

VAST Build Status

A library for parsing Digital Video Ad Serving Template (VAST) 2.0 and 3.0 XML documents, as outlined by the Interactive Advertising Bureau at VAST outlines a standard document format for communication between digital video players and ad servers, including support for multiple forms of creative and tracking support that conforms to the latest IAB standards.

It's recommended that you review the resources made available for the IAB. Whenever possible the documentation in this library has been pulled directly from those resources.

This library strives to be as true to the standard as possible, while presenting a Ruby-friendly interface.


VAST is available as a RubyGem.

gem install vast


Parse a VAST document and access its contents using an easy-to-understand model. For example:

document = VAST::Document.parse("vast_document.xml"))
inline_ad = document.inline_ads.first
puts inline_ad.linear_creative.mediafiles.first.type
=> "video/x-flv"
puts inline_ad.linear_creative.mediafiles.first.url
=> #<URI::HTTP:0x1015ad5f0 URL:>

See the documentation for the individual classes for an overview of what information available for each class.


Read the rdoc at


Please, file an issue.

Running Tests

bundle exec rake

Note on Patches/Pull Requests

  • Fork the project.

  • Make your feature addition or bug fix.

  • Add tests for it. This is important so I don't break it in a future version unintentionally.

  • Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)

  • Send me a pull request. Bonus points for topic branches.

Release Instructions

Install project development dependencies. The release process will use gem-release for version management.

bundle install

Checkout the master branch; never release changes that haven't been merged to master.

git checkout master

Create a release branch. Release branch names should match the pattern “v\.[0-9].+”.

git checkout v1.0.5

Bump the project version. By default the bump command will increment the patch version in the lib/vast/version.rb file, and commit the git change.

gem bump [patch|minor|major] --branch

Modify the file. Add the new version to the top of the file, and document all major changes.

When done commit the changelog.

export BRANCH=$(git rev-parse --abbrev-ref HEAD)
git add
git commit -m "CHANGELOG ${BRANCH}"

Push your release branch to

git push origin -u $BRANCH

Open a new pull request from your branch to

Only a github user with write access to can perform the remaining steps of the release.

Review and merge the pull request to

Check Travis CI testing passed on the merge to master before continuing.

Tag the release and push to using gem-release.

git checkout master
git pull origin
gem release --key $RUBYGEMS_API_KEY --tag --push

© 2010 Chris Dinn. See LICENSE for details.


A gem for parsing VAST 2.0 documents




No releases published


No packages published