The VideoLAN Forums

Hello,
Can anyone explain why I get this error when trying to run a transcode from a RTSP stream obtained from an IP camera?

vlc -vvv --color --noaudio rtsp://192.168.0.101/live2.sdp --sout '#duplicate{dst="transcode{vcodec=DIV3,vb=256,scale=0.66}:standard{access=mmsh,mux=asfh,dst=:8004/CAM}"}'

[00000444] stream_out_transcode stream out debug: late picture skipped (1173982)
[00000444] stream_out_transcode stream out debug: late picture skipped (1178688)
[00000444] stream_out_transcode stream out debug: late picture skipped (123913)
[00000444] stream_out_transcode stream out debug: late picture skipped (1131757)
[00000444] stream_out_transcode stream out debug: late picture skipped (1147197)
[00000444] stream_out_transcode stream out debug: late picture skipped (94366)
[00000444] stream_out_transcode stream out debug: late picture skipped (1099627)
[00000444] stream_out_transcode stream out debug: late picture skipped (1109187)
[00000444] stream_out_transcode stream out debug: late picture skipped (63453)
[00000444] stream_out_transcode stream out debug: late picture skipped (1075883)
[00000444] stream_out_transcode stream out debug: late picture skipped (1087900)
[00000444] stream_out_transcode stream out debug: late picture skipped (44593)
[00000444] stream_out_transcode stream out debug: late picture skipped (1058242)
[00000444] stream_out_transcode stream out debug: late picture skipped (1075047)
[00000444] stream_out_transcode stream out debug: late picture skipped (33932)
[00000444] stream_out_transcode stream out debug: late picture skipped (1046506)
[00000444] stream_out_transcode stream out debug: late picture skipped (1060192)
[00000444] stream_out_transcode stream out debug: late picture skipped (20706)

Your CPU is too slow at least in some spikes. You can try to increase caching, but that will increase latency, to smoothen transcoding.

Hello, first of all my thanks for the quick response.

I've tried the following:

vlc -vvv --color --noaudio rtsp://192.168.0.101/live2.sdp --rtsp-caching=3500 --sout '#duplicate{dst="transcode{vcodec=DIV3,vb=256,scale=0.66}:standard{access=mmsh,mux=asfh,dst=:8004/CAM}"}'

Although no longer get the previous error, still unable to open the MMS stream. VLC (client on Windows XP) gives the following error message: Unable to fill the buffer

Best regard
Ricardo Ruivo

Hello I just experience the same configuration of VLC on a machine much more powerful (Core 2 Duo T8300 2.4GHz) but the error message and behavior persist

(...)
[00000444] stream_out_transcode stream out debug: late picture skipped (1173982)
(...)

I'm using version 0.9.9 of VLC.

Best regard
Ricardo Ruivo

Dear all,
I finally managed to solve my problem, with only minor changes.
Added "fps=1" to the configuration of transcode

vlc -vvv --color --noaudio rtsp://192.168.0.101/live2.sdp --sout '#duplicate{dst="transcode{vcodec=DIV3,vb=256,scale=0.66,fps=1}:standard{access=mmsh,mux=asfh,dst=:8004/CAM}"}'

Also changed the RTSP configuration of the camera for

Frame Size: 320x240
Maximum frame rate: 10 fps
Intra frame period: 4 s
Fixed quality: Good

Now everything works perfectly well. However I can not understand what these changes can be induced in solving the problem.

Ricardo Ruivo