[streaming] Re: can someone explain me that problem ?

[Pete Martin]

Adrian,

If you turn logging on in vlc using the logger interface (I use verbosity of 
4) then you will see that vlc is unhappy when playing from the file as well. 
Looks like the timing (PCR/PTS/DTS) of the second segment does not match the 
timing of the first segment causing vlc to junk several video and audio 
frames until it has resynched.

The behaviour when streaming is different from when reading from a file is 
because vlc has to wait for packets to arrive from the streamer and it 
cannot resynch as quickly as when it is reading them from a file, when it is 
able to read as much as it requires.

Pete
----- Original Message ----- 
From: "adrian hornsby" <adrian_hornsby at yahoo.co.uk>
To: <streaming at videolan.org>
Sent: Monday, September 05, 2005 8:10 AM
Subject: [streaming] can someone explain me that problem ?


> Hi,
>
> I have developed a real-time splicing tool that can
> splice real-time mpeg2TS streams.
> I use VLC as a client to check the result of the
> spliced stream as it is the only one that give good
> feedbacks on problems. But now I am facing something
> I cant really explain :
> I have record a result of a splice using the "Dump
> raw input" option of vlc. When I locally play the
> file
> using VLC, the result is perfect, no display
> problem.
> Nevertheless, when I send this same file on the
> network via VLC on udp/multicast and when I visualise
> the sent stream on VLC on another computer, theresult
> isnt good at all !! VLC seams to loose frames at the
> splicing point.
> Let me also mention that the 2  streams are
> different (different bitrate) but why would it play
> perfectly from file but not when it is send on the
> network ??
> is vlc behavior different when dealing with files or
> network ??
>
> You can try yourself to play the enclosed file in
> local and then send it via udp/multicast and see the
> result.
>
> here you can download the file :
> http://www.students.tut.fi/~hornsby/splice.mpeg
>
> thanks a lot for any clue and help.
> adrian
>
>>
>>
>>
> ___________________________________________________________
>>
>> To help you stay safe and secure online, we've
>> developed the all new Yahoo! Security Centre.
>> http://uk.security.yahoo.com
>>
>
>
>
>
> ___________________________________________________________
> To help you stay safe and secure online, we've developed the all new 
> Yahoo! Security Centre. http://uk.security.yahoo.com
>
> -- 
> This is the streaming mailing-list, see http://www.videolan.org/streaming/
> To unsubscribe, please read http://www.videolan.org/support/lists.html
>
> 

-- 
This is the streaming mailing-list, see http://www.videolan.org/streaming/
To unsubscribe, please read http://www.videolan.org/support/lists.html