[vlc-devel] Re: BUG udp access under Windows (found out why!)

Jean-Paul Saman saman at natlab.research.philips.com
Wed Oct 2 11:44:25 CEST 2002

Christophe Massiot wrote:
> À (At) 16:07 +0200 1/10/2002, Jean-Paul Saman écrivait (wrote) :
>> With vlc-0.3.1 under windows 2000 receiving a MPEG2-TS stream with the 
>> udp plugin works a video output window gets spawned. However the same 
>> stream does not get displayed with vlc-0.4.4 using udp.
>> What changed between version vlc-0.3.1 and vlc-0.4.4 in the udp access 
>> plugin? For us this is a big problem.
> Could you try (on the same stream) 0.4.4 linux and 0.4.1 win32 ?

I found the problem, the test under linux with 0.4.4 gave me the hint. 
It warned me about CRC32 errors in PSI packets. Our TS recorder updates 
the PAT and writes a new CRC32, which is obviously wrong. Why doesn't 
the windows client complain about this?

What probably changed between vlc-0.3.1 and vlc-0.4.x is that libdvbpsi 
was used and the CRC32 of PAT packets is checked. That is why the 
problem popped up at our side.

I'll have to fix the CRC32 generation. It is not a but in vlc.

Kind greetings,

Jean-Paul Saman

Software Architect

e-mail (work): saman at natlab.research.philips.com
phone  (work): 040 27 42909
Ordina TA,
Science Park Eindhoven 5602, Postbus 293, 5600 AG Eindhoven
e-mail : jean-paul.saman at ordina.nl
phone  : 040 2601200
fax    : 040 2601199

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

More information about the vlc-devel mailing list