[FFmpeg-user] ffmpeg live stream transcoding

[radiocm]

please can anyone help me.

i have the following command for ffmpeg:
ffmpeg -re -f h264 -pix_fmt yuv420p -i rtp://239.0.12.1:5000 -loglevel debug 
-r 40 -profile baseline -acodec copy -vcodec copy -vsync 0 -copyts  -f h264
udp://10.0.254.47:1001

ffmpeg is running on the debian server , x64.

when i'm trying to get the output stream , i get nothing. 
if i'm looking on the listening ports also nothing.
what is the issue of the given problem ?

the error log is the following:
    Last message repeated 1 times
[h264 @ 0x159bb80] number of reference frames (0+4) exceeds max (3; probably
corrupt input), discarding one
[h264 @ 0x159bb80] error while decoding MB 42 3, bytestream (-4)
[h264 @ 0x159bb80] error while decoding MB 27 6, bytestream (-11)
[h264 @ 0x159bb80] error while decoding MB 30 9, bytestream (-3)
[h264 @ 0x159bb80] error while decoding MB 37 8, bytestream (-3)
[h264 @ 0x15982e0] Estimating duration from bitrate, this may be inaccurate

Seems stream 0 codec frame rate differs from container frame rate: 50.00
(50/1) -> 25.00 (50/2)
Input #0, h264, from 'rtp://239.0.12.1:5000':
  Duration: N/A, bitrate: N/A
    Stream #0.0: Video: h264 (High), yuv420p, 720x576 [PAR 12:11 DAR 15:11],
50 fps, 25 tbr, 1200k tbn, 50 tbc
Output #0, h264, to 'udp://10.0.254.47:1001':
  Metadata:
    encoder         : Lavf52.111.0
    Stream #0.0, 0, 1/90000: Video: libx264, yuv420p, 720x576 [PAR 12:11 DAR
15:11], 1/25, q=2-31, 90k tbn, 25 tbc
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop, [?] for help
frame=  926 fps= 50 q=-1.0 size=   45772kB time=00:00:18.56
bitrate=20202.6kbits/s





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Best regards, Vadim.
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