The VideoLAN Forums

Hello everyone. First I want to thank all of you who have been working on this program! Many thanks and cheers!

I installed the latest windows version (0.8.1) on my Windows XP Pro SP 2 system. I open a Network Stream and select "UDP/RTP Multicast and specify the IP address and port number (port 9814 in my case) and then click OK. It immediately starts to stream sound but the picture remains grayed out. Any thoughts or suggestions as to why this might be happening? Many thanks and Merry Christmas everyone!

P.S. I have the latest drivers for my video card and this is the only version of VLC I have ever installed.




main debug: creating new input thread
main debug: waiting for thread completion
main debug: thread 3880 (input) created at priority 1 (src/input/input.c:228)
main debug: `udp://@233.6.155.114:9814' gives access `udp' demux `' path `@233.6.155.114:9814'
main debug: demux2_New: access='udp' demux='' path='@233.6.155.114:9814'
main debug: looking for access_demux module
main debug: probing 0 candidates
main warning: no access_demux module matched "udp"
main debug: access2_New: access='udp' path='@233.6.155.114:9814'
main debug: looking for access2 module
main debug: probing 5 candidates
access_udp debug: opening server=:0 local=233.6.155.114:9814
main debug: net: connecting to ':0@233.6.155.114:9814'
main debug: looking for network module
main debug: probing 2 candidates
ipv4 debug: IP_ADD_MEMBERSHIP multicast request
main debug: using network module "ipv4"
main debug: unlocking module "ipv4"
main debug: using access2 module "access_udp"
main debug: pre buffering
access_udp debug: detected TS over raw UDP
main debug: received first data for our buffer
main debug: prebuffering done 32900 bytes in 0s - 341 kbytes/s
main debug: demux2_New: access='udp' demux='' path='@233.6.155.114:9814'
main debug: looking for demux2 module
main debug: probing 34 candidates
mp4 warning: MP4 plugin discarded (not a valid file)
avi warning: avi module discarded (invalid header)
asf warning: ASF plugin discarded (not a valid file)
flac warning: flac module discarded (no startcode)
aac warning: AAC module discarded
main debug: looking for id3 module
main debug: probing 2 candidates
id3tag debug: checking for ID3 tag
main debug: using id3 module "id3tag"
main debug: unlocking module "id3tag"
mpgv warning: ES module discarded (no startcode)
sap warning: SDP (UDP) module discarded
livedotcom warning: SDP module discarded
mkv warning: matroska module discarded (invalid header 0x47013413)
ogg warning: ogg module discarded (invalid header)
real warning: Real module discarded
aiff warning: AIFF module discarded
au warning: AU module discarded
mod warning: MOD module discarded (path=@233.6.155.114:9814)
nsv warning: NSV module discarded
playlist warning: old import module discarded: invalid file
playlist warning: pls import module discarded
pva warning: PVA module discarded
main debug: using demux2 module "ts"
ts debug: DEMUX_SET_GROUP 0 00000000
main debug: `udp://@233.6.155.114:9814' sucessfully opened
ts debug: pid[308] unknown
ts debug: pid[256] unknown
ts debug: pid[8191] unknown
ts debug: pid[8190] unknown
main debug: control type=1
ts debug: pid[32] unknown
ts debug: PATCallBack called
ts debug: new PAT ts_id=1 version=1 current_next=1
ts debug: * number=0 pid=16
ts debug: * number=114 pid=32
ts debug: PMTCallBack called
ts debug: new PMT program number=114 version=2 pid_pcr=8190
ts debug: * descriptor : unknown (0xe)
ts debug: * descriptor : unknown (0x10)
ts debug: * descriptor : unknown (0xb)
ts debug: * es pid=308 type=2 fcc=mpgv
main debug: Selecting program id=114
main debug: looking for decoder module
main debug: probing 23 candidates
main debug: using decoder module "libmpeg2"
main debug: thread 3964 (decoder) created at priority 0 (src/input/decoder.c:157)
ts debug: * descriptor : unknown (0x6)
ts debug: * es pid=256 type=4 fcc=mpga
main debug: looking for decoder module
main debug: probing 23 candidates
main debug: using decoder module "mpeg_audio"
main debug: thread 3956 (decoder) created at priority 2 (src/input/decoder.c:157)
ts debug: * descriptor : unknown (0xa)
ts warning: first packet for pid=308 cc=0x5
ts warning: first packet for pid=256 cc=0xb
mpeg_audio: MPGA channels:1 samplerate:48000 bitrate:128
main debug: looking for audio output module
main debug: probing 3 candidates
aout_directx debug: OpenAudio
aout_directx debug: device supports 2 channels
aout_directx debug: device supports 1 channel
aout_directx debug: creating DirectSoundThread
main debug: thread 3764 (DirectSound Notification Thread) created at priority 15 (directx.c:357)
main debug: using audio output module "aout_directx"
aout_directx debug: DirectSoundThread ready
main debug: output 'fl32' 48000 Hz Stereo/Mono frame=1 samples/8 bytes
main debug: mixer 'fl32' 48000 Hz Stereo/Mono frame=1 samples/8 bytes
main debug: no need for any filter
main debug: looking for audio mixer module
main debug: probing 3 candidates
main debug: using audio mixer module "trivial_mixer"
main debug: input 'mpga' 48000 Hz Mono frame=1152 samples/1161 bytes
main debug: filter(s) 'mpga'->'fl32' 48000 Hz->48000 Hz Mono->Stereo/Mono
main debug: looking for audio filter module
main debug: probing 23 candidates
main debug: looking for audio filter module
main debug: probing 23 candidates
main debug: using audio filter module "mpgatofixed32"
main debug: looking for audio filter module
main debug: probing 23 candidates
main debug: using audio filter module "trivial_channel_mixer"
main debug: found 2 filters for the whole conversion
main debug: filter(s) 'fl32'->'fl32' 52800 Hz->48000 Hz Stereo/Mono->Stereo/Mono
main debug: looking for audio filter module
main debug: probing 23 candidates
main debug: using audio filter module "bandlimited_resampler"
main debug: found a filter for the whole conversion
ts debug: pid[1] unknown
main warning: output date isn't PTS date, requesting resampling (-41683)
main warning: buffer is 42972 in advance, triggering downsampling
ts debug: pid[17] unknown
libmpeg2 debug: 352x480, aspect 576000, 29.971 fps
main debug: no usable vout present, spawning one
main debug: looking for video output module
main debug: probing 5 candidates
vout_directx debug: creating DirectXEventThread
main debug: waiting for thread completion
vout_directx debug: DirectXCreateWindow
vout_directx debug: Created video sub-window
main debug: thread 3820 (DirectX Events Thread) created at priority 0 (directx.c:248)
vout_directx debug: DirectXEventThread running
vout_directx debug: DirectXInitDDraw
vout_directx debug: directx-device:
vout_directx debug: DirectXEnumCallback: Primary Display Driver, display
vout_directx debug: DirectXEnumCallback: NVIDIA GeForce4 MX 440, \\.\DISPLAY1
vout_directx debug: DirectXEnumCallback: NVIDIA GeForce4 MX 440, \\.\DISPLAY2
vout_directx debug: selecting NVIDIA GeForce4 MX 440, \\.\DISPLAY2
vout_directx debug: screen dimensions (1024x0,1824x600)
vout_directx debug: DirectDraw Capabilities: overlay=1 yuvoverlay=1 can_deinterlace_overlay=1 colorkey=1 stretch=1 bltfourcc=1
vout_directx debug: align_boundary_src=0,0 align_boundary_dest=1,1 align_size_src=0,0 align_size_dest=0,0
vout_directx debug: End DirectXInitDDraw
vout_directx debug: DirectXCreateDisplay
vout_directx debug: DirectXCreateClipper
main debug: using video output module "vout_directx"
vout_directx debug: NewPictureVec overlay:yes chroma:YV12
main debug: waiting for thread completion
main debug: Registering subpicture channel, ID: 2
main debug: Registering subpicture channel, ID: 3
main debug: Registering subpicture channel, ID: 4
main debug: Registering subpicture channel, ID: 5
vout_directx debug: YUV overlay created successfully
vout_directx debug: End NewPictureVec (succeeded)
main debug: got 1 direct buffer(s)
main debug: picture in 352x480, chroma 0x30323449 (I420), aspect ratio 4:3
main debug: picture out 352x480, chroma 0x30323449 (I420), aspect ratio 4:3
main debug: direct render, mapping render pictures 0-6 to system pictures 1-7
main debug: thread 3220 (video output) created at priority 1 (src/video_output/video_output.c:443)
main warning: dts != current_pts (710245)
main debug: stream periodicity changed from B[1] to B[2]
main warning: backward_pts != current_pts (-33368)
main warning: late picture skipped (341145)
main debug: stream periodicity changed from P[5] to P[9]
main warning: late picture skipped (245012)
main warning: late picture skipped (243012)
main warning: late picture skipped (226589)
main debug: decoded 4/120 pictures
main warning: late picture skipped (225223)
main warning: late picture skipped (238889)
main warning: late picture skipped (237934)
ts debug: pid[16] unknown
ts debug: pid[20] unknown
main warning: late picture skipped (236800)
main debug: decoded 4/120 pictures
main warning: late picture skipped (251578)
main warning: late picture skipped (234489)
main warning: late picture skipped (233478)
main warning: resampling stopped after 10984000 usec (drift: -5080)
main warning: late picture skipped (232489)
main debug: decoded 4/120 pictures
main warning: late picture skipped (247545)

I found another posting with the same problem and Spock told the user to increase the UDP buffer to 1000ms (1 sec). Sure enough, that solve the problem.

I found that with the UDP buffer set to 1000ms (1 sec) I was still getting "late picture skipped" warning messages. So I changed the UDP buffer to 2000ms and it the picture now no longer freezes and I don't get any more "late picture skipped" warning messages. Here's a copy of the messages I now get. Is this normal?


main debug: stream periodicity changed from P[22] to P[14]
main debug: decoded 114/114 pictures
main debug: stream periodicity changed from B[2] to B[3]
main debug: stream periodicity changed from B[3] to B[4]
main debug: stream periodicity changed from B[4] to B[2]
main debug: stream periodicity changed from P[14] to P[18]
main debug: decoded 143/143 pictures
main debug: stream periodicity changed from P[18] to P[14]
main debug: decoded 135/135 pictures
main debug: decoded 135/135 pictures
main debug: decoded 135/135 pictures
main debug: decoded 135/135 pictures
main debug: stream periodicity changed from B[2] to B[3]
main debug: stream periodicity changed from B[3] to B[4]
main debug: stream periodicity changed from P[14] to P[17]
main debug: decoded 143/143 pictures
main warning: dts != current_pts (16567)
main warning: backward_pts != current_pts (-16684)
main debug: stream periodicity changed from P[17] to P[66]
main debug: stream periodicity changed from B[4] to B[2]
main debug: stream periodicity changed from P[66] to P[14]
main debug: decoded 113/113 pictures
main debug: stream periodicity changed from P[14] to P[15]
main warning: dts != current_pts (16644)
main warning: backward_pts != current_pts (-16683)
main debug: stream periodicity changed from P[15] to P[44]
main debug: stream periodicity changed from P[44] to P[14]
main debug: decoded 139/139 pictures
main debug: stream periodicity changed from B[2] to B[4]
main debug: stream periodicity changed from P[14] to P[18]
main debug: decoded 145/145 pictures
main warning: dts != current_pts (16599)
main warning: backward_pts != current_pts (-83417)
main debug: stream periodicity changed from B[4] to B[2]
main debug: stream periodicity changed from B[2] to B[3]
main debug: stream periodicity changed from B[3] to B[2]
main debug: stream periodicity changed from P[18] to P[14]
main warning: dts != current_pts (66726)
main debug: decoded 137/137 pictures
main debug: stream periodicity changed from B[2] to B[3]
main debug: stream periodicity changed from B[3] to B[2]
main debug: stream periodicity changed from P[14] to P[16]
main warning: dts != current_pts (16638)
main warning: backward_pts != current_pts (-16684)
main debug: stream periodicity changed from P[16] to P[56]
main debug: decoded 108/108 pictures
main debug: stream periodicity changed from P[56] to P[14]

This is correct. It's a shame you have to set the buffer so large. This indicates a bad network connection which is delaying UDP packets. range/cables/routers can all affect/cause this. You should inspect your network equipment.

I found another posting with the same problem and Spock told the user to increase the UDP buffer to 1000ms (1 sec). Sure enough, that solve the problem.

increase the UDP buffer HOW TO increase ?

increase the UDP buffer HOW TO increase ?

Increase the udp buffer by doing the following;

File > Open Network Stream

Check the "Caching" and set to your network. I needed to set this to 1500ms for it to work on my network.