html - Is it possible to use data URIs in video and audio tags?

Question

Assuming the following:

1. The browser in question doesn't limit the size of data URIs.
2. There is actually a purpose to doing this (so please refrain from asking "what's the point?" and "you do realize base64 encoding will expand your file by 33%, right?").

Is it technically possible to encode an entire video or audio file into base64, and embed it in an HTML document using either <audio> or <video>?

Answer 1

These are my test results. I'll try with Ogg as well if prompted.

Legend

• W = Wave, WD = Wave with base64 encoded data:uri
• M = MP3, MD = MP3 with base64 encoded data:uri

Test results

• Chrome 6.0.472.55: M, MD (no wave)
• Firefox 3.6: W, WD (no mp3:s)
• Firefox 4.0b1: W, WD (no mp3:s)
• iPad iOS 3.2: W, M (no data:uri)
• iPhone iOS 4: W, M (no data:uri)
• Opera 10.62: W, WD (no mp3:s)
• Safari 5.0.1: W, WD, M, MD