[Live-devel] Problem streaming a live H.264 stream to VLC

[Charlie X. Liu]

The latest VLC 0.9.2 sounds more tolerant. Are you with this version?


-----Original Message-----
From: live-devel-bounces at ns.live555.com
[mailto:live-devel-bounces at ns.live555.com] On Behalf Of Matt Schuckmann
Sent: Wednesday, October 01, 2008 10:54 AM
To: live-devel at ns.live555.com
Subject: [Live-devel] Problem streaming a live H.264 stream to VLC

I'm working on prototyping a live H.264 streaming application using the 
LiveMedia rtsp/rtp library and the X264 encoder.
I've written my h264Framer class and integrated it into the 
testOnDemandRTSPServer and I can successfully stream the data to the 
OpenRTSP test application.
However, when I try to open the stream using VLC it only displays the 
first frame and nothing more.
If I open the messages window for VLC I see a whole bunch of messages 
like these

main warning: late picture skipped (266012)
main warning: late picture skipped (266000)
main warning: late picture skipped (266000)
main warning: late picture skipped (282000)
main warning: late picture skipped (250000)
main warning: late picture skipped (250000)
main warning: late picture skipped (250000)
ffmpeg warning: Unknown NAL code: 0
 (h264 at 00B22B60)
ffmpeg warning: Unknown NAL code: 0
 (h264 at 00B22B60)
main warning: late picture skipped (316000)
main warning: late picture skipped (250000)
ffmpeg error: more than 5 seconds of late video -> dropping frame 
(computer too slow ?)

I'm running both the OnDemandServer and VLC on the same PC so I don't 
think that there could be any funny clock skew going on.

I'm kind of at a loss for what's going wrong, but I am pretty new to 
this stuff.
I was hoping that somebody out there might know enough about VLC and the 
LiveMedia library to give me some clues on what to look for. For 
instance does anybody know what the numbers in the late picture skipped 
message are, they don't look like time codes to me.


Thanks
Matt S.

PS I tried stream to Quicktime Viewer too and it just wouldn't show 
anything, although it did say that it was playing the stream.








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