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video buffering

video buffering

Posted Aug 5, 2007 6:05 UTC (Sun) by akanaber (subscriber, #23265)
In reply to: video buffering by akanaber
Parent article: A report from OSCON 2007

> I'd guess it was "20 seconds of video".

Whoops. I just noticed that some of the comments above were from arjan. Never mind, and sorry for the noise.

I was just a bit surprised at the idea of buffering 20 minutes of DVD video. That's certainly a large buffer.

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video buffering

Posted Aug 11, 2007 0:43 UTC (Sat) by giraffedata (subscriber, #1954) [Link]

I can't understand how there could possibly be a rule of thumb for this. Besides the fact that it's far from reliable to assume video is on optical storage and audio is on magnetic storage, there seems to be a huge assumption about how scarce memory is on the system.

If buffering 700MB means you have to push out of memory other stuff so that you then have to spin up a disk and get it back multiple times, it probably doesn't make sense.

But if there is 1400MB of memory essentially unoccupied, stopping at 20 minutes of buffering doesn't make much sense.

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