[vlc-devel] Fwd: [streaming] VLC Streaming bandwidth problem on Windows XP

Derk-Jan Hartman hartman at videolan.org
Fri Oct 21 12:33:42 CEST 2005

I think there is an error in our MMS framing code for TCP, but i'm  
not sure where and why.
But it indeed is a known problem.


Begin forwarded message:

> From: "Steve Bennett" <steve at electricpocket.com>
> Date: 21 oktober 2005 11:47:02 GMT+02:00
> To: <streaming at videolan.org>
> Subject: [streaming] VLC Streaming bandwidth problem on Windows XP
> Reply-To: streaming at videolan.org
> X-Pr-Spamcheck: 0.810 () HTML_30_40,HTML_MESSAGE
> On Windows XP VLC streaming with both http and mms,  bandwidth  
> maxes out at about 400kbs over a network connection (even local  
> LAN) . The data rate starts shooting up as you start streaming but  
> flattens out to a constant rate of around 400kbit/s.
> If you stream between a VLC server and client on the same machine  
> there is no problem. You can read and play video files from the XP  
> machine over the lan connection without hitting a limit. So it  
> looks like a bug with the VLC tcp output for mms or http.
> There are several posts on the forums about this problem and many  
> thousands of folks have viewed the posts but there is no solution.
> e.g http://forum.videolan.org/viewtopic.php?p=40244#40244
> and http://forum.videolan.org/viewtopic.php?t=8374
> Environment
> ------------------
> Windows XP Service Pack 2
> Problem seen with both VLC 0.8.2 and 0.8.4-test1 beta
> VLC command:-
> dshow:// :dshow-vdev="Hauppauge WinTV 88x Video Capture" :dshow- 
> adev="SoundMAX Digital Audio" :dshow-size="640x480" :no-dshow- 
> config :no-dshow-tuner :dshow-caching=200 :dshow-chroma="" :dshow- 
> fps=0.000000 :dshow-tuner-channel=0 :dshow-tuner-country=0 :dshow- 
> tuner-input=0
> :sout=#transcode 
> {vcodec=DIV3,vb=1024,scale=1,acodec=mp3,ab=64,channels=2}:duplicate 
> {dst=std{access=mmsh,mux=asfh,url=}}

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