[vlc] --sout #transcode results in black image

[Hans-Juergen Tappe]

Hi!

I am running VLC on a Multimedia video controller: Brooktree Corporation
Bt878 Video Capture (rev 02).

Streaming the TV worked great before I changed the underlaying PC
(taking the software as it was):

vlc \
  v4l:/dev/video0:norm=pal:size=cif:channel=0:adev=/dev/audio2:audio=1 \
  --ttl 1 \
  --intf dummy \
  --sout \
'#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128,deinterlace}:std{access=udp,mux=ts,url=239.255.12.13}'

Now, only the sound is transferred - and a black image. Why this?

VLC works great on the server using
vlc \
  v4l:/dev/video0:norm=pal:size=cif:channel=0:adev=/dev/audio2:audio=1

Adding the '-v' options shows:
mux_ts private warning: packet with too strange dts
(dts=1129744548023778,old=1129744548025754,pcr=1129744548025801)
access_output_udp private warning: putting two PCRs at once

Is there any hint inside these messages, I can' decrypt? :-)

The "target" vlc client didn't change and still runs perfectly for DVDs
et.al.

So I expect, something is wrong with the transcoding on the new hardware
or new kernel on the server. Does transcoding need some extra kernel
module (isn't it working in userspace)?

What did I miss? Any idea out there? I didn't find any hint in the VLC
online documentation - or did I miss a page?

Yours,
Hans-Jürgen Tappe


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