No, Facebook isn’t testing HTML5…at least not yet

A number of bloggers are today reporting a noticeable change to Facebook’s website when viewed from the built-in Safari web browser on the Apple iPad: videos now work. Previously, videos appearing in a user’s News Feed wouldn’t play on the iPad due to Facebook’s use of Adobe Flash technology, which is not supported. Apple has, somewhat notoriously, banished Flash from its mobile devices, including the iPad, iPhone and iPod Touch, in favor of supporting the HTML5 web standard instead.

Although still in development, HTML5, the latest revision to the markup language used to create web pages, offers a feature that allows videos to play in a web browser without the need for a plugin like that used by Adobe Flash.

But has Facebook actually implemented HTML5 on its site?

ReadWriteWeb’s Jared Smith provided essential technical perspective for the writing of this report.

Transcoding, Not HTML5

In our tests this morning, it appears that Facebook isn’t actually using HTML5 to display the videos. Instead, what appears to be going on is that Facebook.com is detecting that you’ve arrived to the website via the Safari web browser on the iPad. When you then attempt to play a video on the iPad, it doesn’t play inline (something that would have been a clear confirmation of an HTML5 implementation). Instead, Facebook is linking out to the actual video, transcoded to MP4, a video format that plays on Apple devices.

We confirmed this by uploading a video file to Facebook in WMV format (a non-iPad compatible video format) and then attempting to play it on the iPad. It played as an MP4 file.

Still Being Rolled Out

Also interesting: this implementation of transcoding (converting one format to another) appears to be still in the initial stages of rollout.

We went to one user’s News Feed (belonging to our own Marshall Kirkpatrick, in fact) and discovered he had uploaded two video files last night using iCamcorder. On the iPad, the earlier video played, launching as a full-screen MP4. The other, when clicked, informed us that we needed Flash in order to view it.

From http://www.readwriteweb.com/archives/facebook_testing_html5_video_for_ipad_apparently_not.php