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38

answers:

2

i was wondering if anyone knew what video/audio encoding technology youtube is using. i heard they started with ffmpeg but am unsure

A: 

Just like everything inside of Google's properties there's a chance it's some kind of homebrew solution that's over-optimized to the maximum. So while basically it's a possibility they were used ffmepeg at the start it's impossible they don't rewrite it from time to time.

fabrik
+1  A: 

They use either H.263, H.264 (MPEG-4) or VP8 to encode video.

If I'm not mistaken they are currently porting everything over to VP8, which they acquired from On2 and has been released as Open Source (and should be the code used in WebM as well).

You could also check out http://en.wikipedia.org/wiki/Youtube#Video_technology for more information.

wimvds