VLC unable to play file from HTTP on some machines

[NeoSyRenity]

Hi.

I have a really strange problem, where VLC is unable to play a file from HTTP server, on a particular machine, but works great on other machines.

I read the logs for both machines, and it seems as VLC unable to seek correctly in the problematic machine.

Here are the log snippets:


Working machine:

mp4 debug: found Box: ftyp size 28
mp4 debug: found Box: free size 8
mp4 debug: skip box: "free"
mp4 debug: found Box: mdat size 786681
mp4 debug: skip box: "mdat"
access_http debug: trying to seek to 786717
main debug: net: connecting to 80.179.88.180 port 80
main debug: connection: Resource temporarily unavailable
main debug: connection succeeded (socket = 736)
access_http debug: protocol 'HTTP' answer code 206
access_http debug: Content-Type: application/octet-stream

access_http debug: this frame size=2589
access_http debug: stream size=789306,pos=786717,remaining=2589

mp4 debug: found Box: moov size 2589
mp4 debug: found Box: mvhd size 108
mp4 debug: read box: "mvhd" creation 719084d-36h:00m:00s modification 719084d-36h:00m:00s time scale 1000 duration 694977d-48h:00m:01s rate 1.000000 volume 1.000000 next track id 2
mp4 debug: found Box: trak size 2473
mp4 debug: found Box: tkhd size 92
mp4 debug: read box: "tkhd" creation 719084d-36h:00m:00s modification 719084d-36h:00m:00s duration 694977d-10h:13m:20s track ID 1 layer 0 volume 0.000000 width 352.000000 height 288.000000

Non-working machine:

mp4 debug: found Box: ftyp size 28
mp4 debug: found Box: free size 8
mp4 debug: skip box: "free"
mp4 debug: found Box: mdat size 786681
mp4 debug: skip box: "mdat"
access_http debug: trying to seek to 786717
main debug: net: connecting to 80.179.88.180 port 80
main debug: connection: Resource temporarily unavailable
main debug: connection succeeded (socket = 1680)
access_http debug: protocol 'HTTP' answer code 206
access_http debug: Content-Type: application/octet-stream

access_http debug: this frame size=789306
access_http debug: stream size=1576023,pos=786717,remaining=789306
mp4 debug: found Box: ftyp size 28
mp4 debug: found Box: free size 8
mp4 debug: skip box: "free"
mp4 debug: found Box: mdat size 786681
mp4 debug: skip box: "mdat"
mp4 debug: out of bound child
mp4 debug: dumping root Box "root"
mp4 debug: | + ftyp size 28
mp4 debug: | + free size 8
mp4 debug: | + mdat size 786681
mp4 debug: | + ftyp size 28
mp4 debug: | + free size 8
mp4 debug: | + mdat size 786681
mp4 debug: ISO Media file (isom) version 512.
mp4 error: MP4 plugin discarded (no moov box)

lua debug: Trying Lua scripts in C:\Documents and Settings\Ezrav\Application Data\vlc\lua\playlist
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\\lua\playlist
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\anevia_streams.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\appletrailers.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\bbc_co_uk.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\break.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\canalplus.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\cue.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\dailymotion.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\france2.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\googlevideo.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\joox.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\koreus.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\lelombrik.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\megavideo.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\metacafe.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\youtube.lua
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\\lua\playlist\youtube_homepage.lua
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\\share\lua\playlist
avformat debug: detected format: mov,mp4,m4a,3gp,3g2,mj2
access_http debug: trying to seek to 786681
main debug: net: connecting to 80.179.88.180 port 80
main debug: connection: Resource temporarily unavailable
main debug: connection succeeded (socket = 1680)
access_http debug: protocol 'HTTP' answer code 206
access_http debug: Content-Type: application/octet-stream
access_http debug: this frame size=789306
access_http debug: stream size=1575987,pos=786681,remaining=789306
access_http debug: trying to seek to 1573398
main debug: net: connecting to 80.179.88.180 port 80
main debug: connection: Resource temporarily unavailable
main debug: connection succeeded (socket = 1716)
access_http debug: protocol 'HTTP' answer code 206
access_http debug: Content-Type: application/octet-stream
access_http debug: this frame size=789306
access_http debug: stream size=2362704,pos=1573398,remaining=789306
avformat error: av_open_input_stream failed

As you see, on non-working machine, entirely different size is read, which causes the reader to miss the "moov" box, and prevents the file playback.

Any idea why this happen, and how to re-solve it?

Thanks in advance!

[VLC_help]

You are using same VLC versions on both computers?

[NeoSyRenity]

Yes, it was the same, latest version (1.0.1).

The problematic PC has Symantec antivirus installed, but disabling it didn't help.

Any idea what could this be?

Thanks in advance!

[VLC_help]

If you want to debug it out, use Wireshark and check that the return values are same for both VLCs.

One thing that might broke network packets is NVIDIA Firewall, so if you have that, disable it.