[CentOS] Check my math please

Monty Shinn montys at videopost.com
Wed Nov 5 23:42:10 UTC 2008


Sean Carolan wrote:
>> The size of the file doesn't make much difference.  What matters is the
>> resolution and framerate of the vide
> 
> For a back-of-the napkin calculation can we not assume that data equal
> to the entire size of the file will be streamed to the client during
> playback?  I understand that frame rate, etc. are important as well
> but I do not need exact figures, just a general idea of what size
> tube** is required on the viewer's side to see the video without
> skipping.
> 
> **  The internet is not really made of tubes.  Unless you're from Alaska.
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos


Yes, you're right.  You did define the length of the clip, after all...:>

I'm just use to streaming wild, not off of an existing file.

That being said, you may want to look at H.264 as a possible compression 
codec.  It looks pretty good.  For example, on one of our streamers, we 
are streaming 640x480 at 24fps, using H.264 compression, and seeing the 
bandwidth usage fluctuating around 800kb/sec, depending on video 
content.  The compression setting is "best", which means lightest 
compression.

(We use quicktime broadcaster to feed Darwin Streaming Server on a 
Centos 5.x box.)

Sorry I didn't pay more attention to the OP.  I must keep my hands off 
the keyboard...

Later,

Monty


More information about the CentOS mailing list