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

[Jean-Paul Saman]

Jesse Burson wrote:

>>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?
>>    
>>
>
>Same problem - the switch's RX light for the sending computer's port,
>and
>the TX lights for every other port, do not light up for most files, but
>they
>do for certain files (well, for unicast, only the lights for the port
>into
>which the destination machine is plugged actually light up).
>
>  
>
What vlc commandline options do you use?

>>>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?
>>    
>>
>
>Under multicast, all machines receive at the same time.
>
>  
>
>>>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.
>>    
>>
>
>Originally I was using a different switch (Dell PowerConnect).  It
>wouldn't
>do multicast correctly - occasional bits of data here and there.  Now,
>with
>the Cajun, some videos (so far, only videos recorded by XP machines from
>DVDs) multicast just fine, so it isn't a problem with the network (the
>network
>isn't uplinked; it's just these test machines and the switch).  If it
>were a
>problem with the network, it wouldn't be dependant on which file is
>played.
>  
>
Do you use the --ttl 2 commandline option of vlc?

>  
>
>>>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.
>>    
>>
>
>The videos that worked in multicast work in unicast.  The videos that
>didn't
>work in multicast don't work in unicast.
>  
>
Are all the video files encoded in the same manner? Could you send a log 
from VLC's output for one of the succeeding files and one of the failing 
files, please.

Greetings,
Jean-Paul Saman.

-- 
This is the streaming mailing-list, see http://www.videolan.org/streaming/
To unsubscribe, please read http://www.videolan.org/support/lists.html
If you are in trouble, please contact <postmaster at videolan.org>