[streaming] v4l/webcam streaming

Miro totoro at ovh.net
Sat Dec 18 15:21:00 CET 2004


Hello,

I've started to test a v4l/webcam solution to stream video
on lan. But when I start vls, there's a problem with timestamp:

VideoLAN Server 0.5.5-cvs (Dec 16 2004) - (c) 1999-2003 VideoLAN
Info : Found V4L device Creative Webcam NX ULTRA

       1 channel(s)
160x120->640x480
Info : Changing to channel 0 (SPCA505)
Info : Found V4L window 640x480
Info : Encoding video : 640x480 25 fps at 500 kb/s in mpeg4
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]Error, Invalid timestamp=0, last=0
[mpeg4 @ 0xb7f54008]get_buffer() failed (stride changed)


The problem occurs also with mpeg1video compression.
Does the problem come from the webcam driver (spca505),
v4l or vls?

Thanks
Miro


-- 
"Ne pas grandir trop vite, mais comme un arbre."

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