Every video or audio mediaclip that gets uploaded to the online video platform, automatically gets transcoded (or encoded) to different formats, in order to ensure playback on all devices and bandwidths. These formats are called assets and can be found in the assets tab in the mediaclip details. What specific assets are created by the online video platform can vary by specific publication settings, but we maintain a standard set that will be used in most publications.

Video assets

Video will be encoded to various asset types:


Our main asset type is MP4_MAIN and will be served to most of the users. It features a Standard Definition resolution along with an average bandwidth. There may be multiple MP4_MAIN assets using different resolutions and bandwidths in some publications.


Similar to the MP4_MAIN asset, with a High Definition resolution (above 720p). It features settings that ensure smooth playback and encoding that is more suited to high resolution video.


This asset type can be considered as the most basic asset, since it has great compatibility with a broad range of devices, including (hence the name) the iPod. However, file size and quality are sacrificed for this compatibility and the Blue Billywig player favours other assets if they can be played.


This asset will only be used within the Timeline Editor, and will never be served to the user.


An asset that is used to display interactive video on the iPhone. It will only be used on iPhone's when an interactive timeline is present.

Audio assets


This is the only asset type that will be encoded for audio mediaclips, and offers broad compatibility of devices and browsers. Depending on the setup we will add versions with different bitrate settings.

What asset will be used?

The Blue Billywig Player determines what asset to use on a number of factors, to ensure the best viewing experience.

Compatible assets

First, the player determines what assets can be played on device and browser that the user is using. The resulting list is also featured in the quality selection list in the player.

Determining the 'best' asset

Next, the player measures the internet connection speed that is available. The asset with highest bandwidth that is not higher than the internet connection speed, will be chosen. This way, the user will get the best quality media without stuttering.

Note that a user can still manually select an asset that has a higher bandwidth than the available internet connection speed, via the quality selector.

Deleting assets

We strongly discourage deleting assets, since this can result in an unplayable media on some devices. However, when an asset is deleted, the player will try to select one of the remaining assets.

When replacing a media clip's source file, deleted assets will again be transcoded. An accidentally deleted asset can be recovered by re-uploading the source file.

Previewing assets

Although the Online Video Platform allows every asset to be previewed, it may occur that some assets are unplayable in the OVP depending on the device, browser and whether Flash is installed or not.