[streaming] Re: Problems streaming certain MPEGS [Computer Assets #42]

[Jean-Paul Saman]

Jesse Burson wrote:
> I'm not sure if this is even a VLC issue, but it's worth a shot.
Let's try some testing then. Could you try to stream one of the files 
using unicast over the network?


> Symptoms: Various MPEG files are being sent to multicast addresses via
> VLC, to be received by other machines running VLC. In some cases,
> *depending on the file played*, the switch is not getting anything from
> the sending machine.  In other cases, some initial info about the video
> is sent but the video itself is not.
Are all the machines receiving at the same time? Or is only one doing 
the receiving?

> Environment: Windows XP, tested with VLC 0.6.2 and an unknown version;
> Windows 2000 Pro, SP4, tested with VLC 0.5.3, 0.6.0, and 0.6.2; Debian
> Woody, kernel 2.4.18, tested with VLC 0.6.0 and 0.6.2 (all versions play
> all files locally); Cajun P334T switch; all machines sent MPEG streams
> to udp://225.1.1.1:2001 in all cases.
See previous question.

> Additional info: All computers are able to play all videos locally with
> all versions of VLC, so it isn't a problem with the computers
> themselves.
No, it is likely a multicast problem on your network.

> Some videos (all recorded by XP machines from DVDs) can be successfully
> received, independant of what machine is sending and what machine is
> receiving.  Other videos can only be sent from Windows machines.  VLC
> decodes all videos as MPEG.

> Is there some subtype of MPEG?  Why would certain MPEGs which play
> locally not be multicastable?  Why would a subset of those only be multicastable
> from Windows machines?  How can I ensure that I'm creating content which
> will be multicastable from any machine?


Sending with VLC should make sure that the video is streamable. Could 
you try first to stream it with unicast instead? So we can rule out if 
it is likely to be related with VLC or the network.


-- 
Kind greetings,

Jean-Paul Saman


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