Monday, November 14, 2011

streaming video and quality

Just a small study I did about streaming video and quality.

Ted talk quality, for eg.

- wireshark clocked it at 0.415 Mbps - let's say 400 kbps.

(Ted uses variable bit rate streaming - bitrate changes with scene as well as with bandwidth availability)

Youtube video at 360p -

21.6 MB for 8 minutes 45 sec
21.6 MB/525 seconds
= 0.0411 MB/s
= 0.329 Mbps, close to 300 kbps.

But these are all offline encoded videos. For live encoder, quality will be somewhat lower for the same bitrates.

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