[vlc] Re: http at high rates

Marcelo Manzato manzato81 at yahoo.com.br
Fri Mar 10 20:56:45 CET 2006


Hi,

I discovered one more hint in order to help you to try
to help me... 

surprisely, if I run the vlc which has the hole of
receiving the rtsp stream and make it available for
http access under windows, it works well even at high
rates! 

At windows, I'm using the 0.8.4a binary version, but I
need it running under linux because I'm doing some
measurement tests... 

At linux, I have fc3, P4 intel, 3GHz, 1GB RAM, and I
compiled the 0.8.4a version under this configure
options:

./configure --enable-livedotcom --enable-v4l
--enable-faad --enable-a52 --enable-aa
--with-livedotcom-tree=/usr/local/src/live/
--with-ffmpeg-mp3lame --with-ffmpeg-faac
--with-ffmpeg-tree=/usr/local/src/ffmpeg-20051126/
--disable-mad
--with-dvbpsi-tree=/usr/local/src/libdvbpsi4-0.1.5/

Everything seems to be working well, unless this
problem of receiving a rtsp stream and make it
avaliable for http access at high video bitrates...

Thanks again...



--- Marcelo Manzato <manzato81 at yahoo.com.br> escreveu:

> Hi Viktor,
> 
> One computer (windows, P4 Intel 2GHz, 768 MB RAM) is
> capturing the video content (no audio), encoding
> under
> mp4v/ffmpeg and transmitting to darwin streaming
> server. The command I use for that is the following:
> 
> vlc.exe -vvv dshow:// :dshow-size="640x480"
> --noaudio
>
:sout=#transcode{vcodec=mp4v,vb=2000,fps=30,venc=ffmpeg}:rtp{dst=192.168.0.1,port-video=20000,ttl=8,sdp=file://C:\main.sdp}
> 
> Then, another computer (linux, P4 Intel 3Ghz, 1GHz
> RAM) requests that content from Darwin, and makes
> available the html access, from the following
> command
> line:
> 
> vlc -vvv rtsp://192.168.0.1/main.sdp --noaudio
>
:sout="#duplicate{dst=std{access=http,mux=ts,url=:8080}}"
> 
> Under these conditions (2 Mbps of bitrate)
> everything
> seems to be fine, however, I want higher bitrates
> (about 15 Mbps), what causes the problems previously
> rited if I increase the vb parameter from the
> encoder.
> 
> 
> Thanks for your atention.
> 
> 
> --- Viktor Kompaneyets <vato at wnet.ua> escreveu:
> 
> > Marcelo Manzato wrote:
> > 
> > > Hi,
> > > 
> > > i want my vlc to receive an rtsp stream from
> > darwin
> > > and transmit to clients using the http protocol.
> > > 
> > > I can do that if the video bitrate is less than
> 2
> > > Mbps. However, I would like to increase the
> > bitrate,
> > > but I'm not able to do that, the player shows a
> > lot of
> > > "late picture skipped" and "more than 5 seconds
> of
> > > late video -> dropping frame (computer too
> slow?)"
> > > messages.
> > > 
> > > However, I'm under a 100Mbits isolated LAN, and
> > the
> > > computers don't seem to be at the top of
> > processing
> > > power.
> > > 
> > > Is there something I could do to solve this
> > problem?
> > 
> > Do you transcode?
> > Which type of mux do You use?
> > Which A/V codecs?
> > 
> > There are a lot of troubles with this. I`d no
> > problem only with 4.5Mbit/s
> > MPEG2 TS and http.
> > 
> > Do you?
> > 
> > -- 
> > Viktor Kompaneyets
> > Wnet project manager
> > 
> > -- 
> > This is the vlc mailing-list, see
> > http://www.videolan.org/vlc/
> > To unsubscribe, please read
> > http://www.videolan.org/support/lists.html
> > 
> > 
> 
> 
> 
> 		
>
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_______________________________________________________
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_______________________________________________________
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