Tristan I hope this gets to you,
The speed of the machine that I am using to encode the live h264 is not the issue.
I never use over 20% or so of the machines resources as reported by the "top" command.
The guy with the speed boats seems to be doing well however he is not using VLC,
but rather Quicktime Broadcaster on his mac-mini's.
That is a good solution, but we are committed to Linux on PC's for this project.
And I think that QuickTime Broadcaster is an OSX only app.
BTW I am using a #bash script to broadcast from VLC to Darwin.
Here is the Script:
************************************************************************
#!/bin/bash
port="50000"
function vlc_rtp
{
vlc \
rtsp://$1/mpeg4/$2/media.amp \
--sout \
"#transcode{vcodec=h264,vb=1024,\
venc=x264{keyint=10,me=dia,subme=1,analyse=none,bframes=0,merange=8}}:\
rtp{dst=127.0.0.1,port-video=$port,sdp=file:/usr/local/movies/$3}" \
#&> /dev/null &
port=$[$port+2]
}
vlc_rtp 192.168.1.203 1 high.sdp
**************************************************************************
As you can see from the script,
VLC transcodes and then publishes a stream to Darwin which creates the SDP.
Darwin will stream any from any stream published via SDP to the /usr/local/movies folder.
Streaming from Darwin is not the issue,
we just need to find the proper VLC transcode parameters,
if they exist.
Perhaps VLC/X264 cannot create a QT compatible live stream.
However, there are many examples of how to create a QT compatible
static movie file in H264 with X264.
hmm...
-Paul
-----Original Message-----
From: Tristan Crichton [mailto:email@hidden]
Sent: Tue 7/24/2007 5:02 AM
To: Paul Mcwhorter
Cc: email@hidden
Subject: Re: H264 and Quicktime 7,2
Hi Paul,
I've seen the same issues, when streaming to a VLC client it works
beautifully but when passing to Quicktime it looks horrid, I haven't yet
found a solution unfortunately, tho I'm hoping by tweaking the x264
settings I'll get it working.
Currently stuck trying to get an Audio feed working with MPEG4, do you
have an audio feed too, or just plain video, if you do would you mind
sharing you VLC command, as I can't get it working with audio at all.
Thanks,
Tristan.
Paul Mcwhorter wrote:
> Howdy all,
>
> For several weeks I have successfully streamed
> live video from a complex of little league fields
> onto a world wide webpage. Don't ask for the address!
>
> I use DSS 555 on Linux to serve the live streams.
> I use VLC as my broadcast encoder software.
> VLC announces the streams to DSS which then creates
> SDP files that the webpage references.
>
> The setup works very well,
> one day I may create a wiki ;-)
>
> Currently I am streaming MPEG4,
> but I would like to stream H264.
>
> Actually I can stream H264,
> but the video that Quicktime 7.2 decodes
> has lots and lots of artifacts.
>
> Does anyone know the magic string of
> VLC/x264 transcode parameters that will
> stream quality video for Quicktime 7.2?
>
> Has anyone had the same problem as I have?
>
> I searched many forums and have tried many
> different VLC/x264 settings, but I cannot
> find a solution, or find someone who has
> gotten this combination to work.
>
> I'm sure many of you have the same issue.
>
> Thanks,
> Paul McWhorter
>
>
>
>
>
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--
Tristan Crichton
front - QA/Technical Support Coordinator
Framestore CFC
9 Noel St, London W1F 8GH
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Direct Dial: +44 (0)20 7208 6429
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