[vlc] Re: Network stream freezes after a few sec

[Chhaya, Harshal]

Måns,

Thanks for your response.

> > main warning: output date isn't PTS date, requesting 
> resampling (42922)
> > main warning: buffer is 44635 late, triggering upsampling
> 
> This is also normal.  Your sound card seems to be playing the sound
> faster than it is arriving.  To avoid skips the audio data has be
> resampled.
> 
> > main warning: PTS is out of range (-11685), dropping buffer
> > main warning: late picture skipped (44360)
> > main warning: PTS is out of range (2238), dropping buffer
> > main warning: PTS is out of range (-21716), dropping buffer
> 
> These mean that the data is arriving too late, according to VLC's
> clock.

Can I ask vlc to buffer a few frames before playback to get around
this problem?

 
> What format is the stream?  What is the source?  I have seen these
> messages when the PTS values differ too much from the PCR (in the case
> of MPEGTS) or SCR (for MPEGPS).  It could also be that the stream is
> simply arriving too slowly.

The file is a MPEG-PS file encoded at about 6 Mbps. I usually send it
at between 6 & 6.5 Mbps.

I can control the sending rate and when I send it at about 7 Mbps, I get
a different set of messages:



main debug: decoded 105/105 pictures
main debug: decoded 105/105 pictures
:
:
mpeg_system warning: garbage (0xc93d1f6f)
mpeg_system warning: garbage (0x0000100c)
mpeg_audio debug: emulated startcode (no startcode on following frame)
main warning: buffer is 72000 in advance, triggering downsampling
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
main warning: late picture skipped (773785451786)
main debug: decoded 105/105 pictures
mpeg_system warning: garbage (0x0016c006)
mpeg_system warning: garbage (0xe37670f4)
mpeg_system warning: garbage (0xbe7b6f19)
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
main warning: late picture skipped (773788987357)
mpeg_system warning: garbage (0xc6ef0600)
mpeg_system warning: garbage (0x77186c11)
mpeg_system warning: garbage (0x09d80ced)
mpeg_system warning: garbage (0x5b4ad24a)
main debug: stream periodicity changed from B[2] to B[1]
mpeg_audio debug: emulated startcode (no startcode on following frame)
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
libmpeg2 warning: invalid picture encountered
main debug: stream periodicity changed from B[1] to B[2]
mpeg_system warning: garbage (0xe68aac9c)


and so on.



> This is what I have deduced after a year of experimenting.  Nobody has
> ever bothered to answer similar questions from me on this list.

I am trying to demonstrate streaming video over a network and the actual
video diplay part is proving to be more challenging than the rest of the
project.

I hope I can figure out if vlc has any options I can use to make the 
playback last longer.

Thanks,
Harshal

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