Help about Network PS stream decode error

Li Lifeng lilf at
Wed Jun 20 15:03:37 CEST 2001


   Thank you for your reply. 
   Because source code in my office, I'll post it tomorrow.

   I don't think the stream is invalid, because the stream is read from 
encoder(iTVC15) real time, and I send the multicast stream to another iTVC15
it can decode correctly. Maybe some problem in buffer.



   I notice that Henri Fallon encounter the same problem in debugging TS stream:

<<<<<<<<<<<<<<<<<<<<<<<henri Fallon>>>>>>>>>>>>>>>>>>>>>>
Subject: Debugging TS input 
From: Henri Fallon <henri at> 
Date: Thu, 3 May 2001 18:17:36 +0200 
Delivered-To: vlc-devel-archive at 
Delivered-To: vlc-devel at 
Reply-To: vlc-devel at 
User-Agent: Mutt/1.2.5i 

With some streams (VOB files streamed by the VLS) I get hundreds of
error messages :

"Skipped macroblock in I-picture"
"DCT coeff (non-intra) is out of bounds"

and I get an image every one and a half seconds (almost:)

whereas audio is OK (not even a scratch for this same stream)

How can I ensure the problem is in the vlc and not in the TS produced by
the VLS ?

>On Wed, Jun 20, 2001, Li Lifeng wrote:
>>    I had find why vlc lock when read from multicast socket, 
>> It's because multicast socket had to bind to INADDR_ANY(I don't know why)
>>    But PS decoder still had error, vlc can pop-up a video windows,
>> but it is black and show nothing. From below messages, I think maybe decoder
>> error, help me please, here is error messages generate by
>>  ./vlc --yuv yuv --warning 4.
>The stream read by the decoder is obviously invalid. Could you put the
>source code of your input plug-in somewhere so we can have a look ?
>Christophe Massiot.

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