The VideoLAN Forums

Good day.
At the first i'll say: in winXP all worked fine, within about 2 years.
I upgraded to W7. Clean install. Windows_7_EN_x64.
IPTV, with the about 70 channels, doesn't work. No error messages appears.
When i start VLC and tell it to play some channel it could (often just nothing happens) do it, but, after 1-2 minutes it just stopped. Just stoped and... it's all i can say.
When video playing it's possible to switch between the channels, but some of them are really pixelated(in winXP all was fine).
Another amazing thing - even those one or two minutes of video VLC can only play when windows firewall is ON O_o!!! (of course all rules are fine)
No matter what i was trying to do, i could not get IPTV even 1 second playing with WFirewall service stopped.
When video flow stop it can play again after 2 hours or after 1 minute, but almost always it's dead forever. Closing, reopening, reinstalling VLS has no sence here.
I think it's even all around Windows 7 kind of trouble(something with the IGMP, multicast maybe??). But how to recognize and fix it?... Have you any things people?

Open Tools -> Messages... (set Verbosity to 2) before opening the IPTV stream.

That is:

main debug: incoming request - stopping current input
main debug: socket 868 polling interrupted
main debug: prebuffering done 0 bytes in 21s - 0 kbytes/s
main error: cannot pre fill buffer
main warning: cannot create a stream_t from access
main debug: removing module "access_udp"
main debug: waitpipe: object killed
main debug: dying input
main debug: thread ended
main debug: dead input
main debug: thread times: real 0m21.060029s, kernel 0m0.000000s, user 0m0.000000s
main debug: processing request item 1MTV node Playlist skip 0
main debug: resyncing on 1MTV
main debug: 1MTV is at 0
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for '1MTV'
main debug: thread (input) created at priority 1 (../.././src/input/input.c:230)
main debug: thread started
main debug: using timeshift granularity of 50 MBytes
main debug: using timeshift path 'c:\TEMP'
main debug: `udp://@239.4.0.3:2020' gives access `udp' demux `' path `@239.4.0.3:2020'
main debug: creating demux: access='udp' demux='' path='@239.4.0.3:2020'
main debug: looking for access_demux module: 0 candidates
main debug: no access_demux module matched "udp"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: creating access 'udp' path='@239.4.0.3:2020'
main debug: looking for access module: 1 candidate
access_udp debug: opening server=:0 local=239.4.0.3:2020
main debug: net: opening 239.4.0.3 datagram port 2020
main debug: Multicast group join request
main debug: using access module "access_udp"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: Using AStream*Block
main debug: pre buffering
qt4 debug: IM: Deleting the input
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry
main debug: TIMER input launching for '1MTV' : 21100.001 ms - Total 21100.001 ms / 1 intvls (Avg 21100.000 ms)
qt4 debug: IM: Setting an input
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry

When try to switch between the channels get this:

main error: cannot pre fill buffer
main error: cannot pre fill buffer
main error: cannot pre fill buffer
main error: cannot pre fill buffer
main error: cannot pre fill buffer
main error: cannot pre fill buffer
main error: cannot pre fill buffer

Could you paste all messages you get to message log?

You're welcome, that is:

main debug: adding item `IPTV.m3u' ( C:\Users\Johnny\Desktop\IPTV.m3u )
qt4 debug: Adding a new MRL to recent ones: C:\Users\Johnny\Desktop\IPTV.m3u
main debug: rebuilding array of current - root Playlist
main debug: rebuild done - 92 items, index 0
main debug: processing request item IPTV.m3u node Playlist skip 0
main debug: resyncing on IPTV.m3u
main debug: IPTV.m3u is at 91
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for 'IPTV.m3u'
main debug: thread (input) created at priority 1 (../.././src/input/input.c:230)
main debug: thread started
main debug: using timeshift granularity of 50 MBytes
main debug: using timeshift path 'c:\TEMP'
main debug: `C:\Users\Johnny\Desktop\IPTV.m3u' gives access `' demux `' path `C:\Users\Johnny\Desktop\IPTV.m3u'
qt4 debug: IM: Setting an input
main debug: creating demux: access='' demux='' path='C:\Users\Johnny\Desktop\IPTV.m3u'
main debug: looking for access_demux module: 3 candidates
main debug: TIMER module_need() : 5.000 ms - Total 5.000 ms / 1 intvls (Avg 5.000 ms)
main debug: creating access '' path='C:\Users\Johnny\Desktop\IPTV.m3u'
main debug: looking for access module: 5 candidates
vcd debug: trying .cue file: C:\Users\Johnny\Desktop\IPTV.cue
vcd debug: could not find .cue file
access_file debug: opening file `C:\Users\Johnny\Desktop\IPTV.m3u'
main debug: using access module "access_file"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: Using AStream*Stream
main debug: pre buffering
main debug: received first data after 0 ms
main debug: pre-buffering done 1024 bytes in 0s - 1000000 kbytes/s
main debug: looking for stream_filter module: 2 candidates
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: looking for stream_filter module: 1 candidate
main debug: using stream_filter module "stream_filter_record"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: creating demux: access='' demux='' path='C:\Users\Johnny\Desktop\IPTV.m3u'
main debug: looking for demux module: 50 candidates
playlist debug: found valid M3U playlist
main debug: using demux module "playlist"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: looking for a subtitle file in C:\Users\Johnny\Desktop\
main debug: `C:\Users\Johnny\Desktop\IPTV.m3u' successfully opened
main debug: deleting item `IPTV.m3u'
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry
main debug: EOF reached
main debug: removing module "playlist"
main debug: removing module "stream_filter_record"
main debug: removing module "access_file"
main debug: thread ended
main debug: rebuilding array of current - root Playlist
main debug: rebuild done - 182 items, index 90
main debug: dead input
main debug: thread times: real 0m0.020000s, kernel 0m0.015600s, user 0m0.015600s
main debug: changing item without a request (current 90/182)
main debug: using item 91
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for '1MTV'
main debug: thread (input) created at priority 1 (../.././src/input/input.c:230)
main debug: thread started
main debug: using timeshift granularity of 50 MBytes
main debug: using timeshift path 'c:\TEMP'
main debug: `udp://@239.4.0.3:2020' gives access `udp' demux `' path `@239.4.0.3:2020'
main debug: creating demux: access='udp' demux='' path='@239.4.0.3:2020'
main debug: looking for access_demux module: 0 candidates
main debug: no access_demux module matched "udp"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: creating access 'udp' path='@239.4.0.3:2020'
main debug: looking for access module: 1 candidate
access_udp debug: opening server=:0 local=239.4.0.3:2020
main debug: net: opening 239.4.0.3 datagram port 2020
main debug: Multicast group join request
main debug: using access module "access_udp"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: Using AStream*Block
main debug: pre buffering
qt4 debug: IM: Deleting the input
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry
main debug: TIMER input launching for 'IPTV.m3u' : 20.000 ms - Total 20.000 ms / 1 intvls (Avg 20.000 ms)
qt4 debug: IM: Setting an input
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry

Nothing happens, just nothing. Now switch another channel:

main debug: incoming request - stopping current input
main debug: waitpipe: object killed
main debug: dying input
main debug: socket 872 polling interrupted
main debug: prebuffering done 0 bytes in 120s - 0 kbytes/s
main error: cannot pre fill buffer
main warning: cannot create a stream_t from access
main debug: removing module "access_udp"
main debug: thread ended
main debug: dead input
main debug: thread times: real 2m0.564172s, kernel 0m0.000000s, user 0m0.000000s
main debug: processing request item 1VIASAT-HISTORY node Playlist skip 0
main debug: resyncing on 1VIASAT-HISTORY
main debug: 1VIASAT-HISTORY is at 3
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for '1VIASAT-HISTORY'
main debug: thread (input) created at priority 1 (../.././src/input/input.c:230)
main debug: thread started
qt4 debug: IM: Deleting the input
main debug: using timeshift granularity of 50 MBytes
main debug: using timeshift path 'c:\TEMP'
main debug: `udp://@239.2.0.34:2020' gives access `udp' demux `' path `@239.2.0.34:2020'
main debug: creating demux: access='udp' demux='' path='@239.2.0.34:2020'
main debug: looking for access_demux module: 0 candidates
main debug: no access_demux module matched "udp"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: creating access 'udp' path='@239.2.0.34:2020'
main debug: looking for access module: 1 candidate
access_udp debug: opening server=:0 local=239.2.0.34:2020
main debug: net: opening 239.2.0.34 datagram port 2020
main debug: Multicast group join request
qt4 debug: Updating the geometry
main debug: using access module "access_udp"
main debug: TIMER module_need() : 5.000 ms - Total 5.000 ms / 1 intvls (Avg 5.000 ms)
main debug: Using AStream*Block
main debug: pre buffering
qt4 debug: Updating the geometry
main debug: TIMER input launching for '1MTV' : 120594.006 ms - Total 120594.006 ms / 1 intvls (Avg 120594.000 ms)
qt4 debug: IM: Setting an input
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry

Nothing again. Switch another channel, getting this:

main debug: incoming request - stopping current input
main debug: socket 892 polling interrupted
main debug: prebuffering done 0 bytes in 120s - 0 kbytes/s
main error: cannot pre fill buffer
main warning: cannot create a stream_t from access
main debug: removing module "access_udp"
main debug: waitpipe: object killed
main debug: dying input
main debug: thread ended
main debug: dead input
main debug: thread times: real 2m0.065210s, kernel 0m0.000000s, user 0m0.015600s
main debug: processing request item 1MTV node Playlist skip 0
main debug: resyncing on 1MTV
main debug: 1MTV is at 0
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for '1MTV'
main debug: thread (input) created at priority 1 (../.././src/input/input.c:230)
main debug: thread started
main debug: using timeshift granularity of 50 MBytes
main debug: using timeshift path 'c:\TEMP'
main debug: `udp://@239.4.0.3:2020' gives access `udp' demux `' path `@239.4.0.3:2020'
main debug: creating demux: access='udp' demux='' path='@239.4.0.3:2020'
main debug: looking for access_demux module: 0 candidates
main debug: no access_demux module matched "udp"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: creating access 'udp' path='@239.4.0.3:2020'
main debug: looking for access module: 1 candidate
access_udp debug: opening server=:0 local=239.4.0.3:2020
main debug: net: opening 239.4.0.3 datagram port 2020
main debug: Multicast group join request
main debug: using access module "access_udp"
main debug: TIMER module_need() : 5.000 ms - Total 5.000 ms / 1 intvls (Avg 5.000 ms)
main debug: Using AStream*Block
main debug: pre buffering
qt4 debug: IM: Deleting the input
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry
main debug: TIMER input launching for '1VIASAT-HISTORY' : 120120.006 ms - Total 120120.006 ms / 1 intvls (Avg 120120.000 ms)
qt4 debug: IM: Setting an input
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry

I can't see the problem in the log. Have you tried to spy with Wireshark?

Have you tried to spy with Wireshark?

I'll try it. But i don't guess this is the network trouble around. In the same machine/network all was really fine in WXP until W7 has been installed. The problem, i think, most likely the Windows 7 problem itself. If you'll search across the inet you can find the questions similar with my. But what it really is?...
Really sad

This is what wireshark tells, just after VLC starts:

As always no video present.

P.S. Few times VLC began play a video with the WFirewall service turned off, therefore, i think, the problem is not in firewall at all(as it could seems in the first post).

Another info:
I tried just to leave VLC with the run channel for a while, and... after about 20 minutes of idle it has played
It is something like a video flow is coming to VLC, from wire, very slow