[FFmpeg-user] Differences downloading RA files with FFMpeg and mplayer

[gialloporpora]

Dear all,
I have noted some differences downloading ra files (via rtsp) using 
FFMpeg and mplayer, for example:

fmpeg -i 
rtsp://mm6.rai.it/radiofonia/radio3/napoli/cuoreditenebra/2011/cuoreditenebra2011_03_26.ra 
output1.ra
mplayer 
rtsp://mm6.rai.it/radiofonia/radio3/napoli/cuoreditenebra/2011/cuoreditenebra2011_03_26.ra 
  -dumpstream

if I listen the resulting files with FFPlay, they seems to be the same 
audio stream, but, if I open them with media player cassic (Real 
Alternative codecs), the file downloaded with FFMpeg have a bad quality.
Someone knows the reason? Maybe, seeking problems, I think, but I am not 
sure.
	
I use Windows XP, but I don't think it is the reason.
Thanks
Sandro

PS: if you want I could upload the resulting output.


ffmpeg

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