How Videos Are Encoded in Articulate Storyline

Article Last Updated Apr 4, 2017

This article applies to:

Here's how Articulate Storyline encodes videos in your courses, based on their original file format and the output options you choose when publishing:

Original Video FormatFlash OutputMobile OutputHTML5 Output
MP4Re-encoded to MP4Re-encoded to MP4Re-encoded to MP4
FLV (no alpha channel)Encoded to MP4Encoded to MP4Encoded to MP4
FLV (with alpha channel)No change (FLV)No change (FLV)Encoded to MP4*
SWFNo change (SWF)Not supportedNot supported
All other file typesEncoded to MP4Encoded to MP4Encoded to MP4

*Alpha channel transparency isn't supported in HTML5 output. As a result, FLV videos with alpha channels will be encoded as MP4 videos in HTML5 output.