On Dec 10, 2009, at 3:48 PM, André Warnier wrote:
Ted Byers wrote:
Presently running Apache's httpd v 2.2.9 on Windows Server (and
also on XP,
but my tests in question were run on the server).
I have attempted to get httpd video streaming working by making a
wvx file
pointing at the video file I want to stream. When I then point my
browser
at it, the dialog asking to open media player appears, and when I
click ok,
th eplayer opens immediately, but it waits until the entire file (a
WMV
file) has been transferred, showing the progress of its being
buffered by
the player, before it actually plays the file.
...
I don't really know, and I am also interested in an authoritative
answer.
But I will dare a guess, based on what I think I know of HTTP.
My guess would be that streaming video (or audio) would rely on the
capability, both of the client and the server, to handle "range"
requests. The client can ask for an object, but also specify "from
byte x to byte y". The server then sends that part, and the client
starts plaing it. At the same time, the client issues more requests
for subsequent ranges, and the server sends these chunks, etc..
I guess that this must also mean that the format of the media itself
lends itself to it, in the sense that the information needed to play
the thing is sent at the beginning or with each chunk, and not at
the end.
All in all, I would thus guess that to do real streaming, both the
client and the server have to be rather specialised for that task.
There is more info here: http://dss.macosforge.org/
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