[MPlayer-users] Re: BUGREPORT: FFmpeg COOK audio decoder

Neil Sleightholm neil at x2systems.com
Sat Jan 7 14:49:06 CET 2006


Neil Sleightholm wrote:

> The new "FFmpeg COOK audio decoder" method of decoding RealAudio
> streams doesn't seem to work reliably for BBC Radio streams. If you
> play either of the following you will notice stream works for a while
> and then repeats the same bit, then runs ok, then repeats:
> 	http://www.bbc.co.uk/radio1/realaudio/media/r1live.rpm
> 	http://www.bbc.co.uk/bbc7/realplayer/dsatg2.rpm
> 
> It looks like the buffer is being emptied and while it is filling up
> it just replays the same bit. I think it would be better if there was
> silence when this happened.
> 
> Also, the following stream does sound correct. It sounds like there is
> a slight echo.
> 	http://www.bbc.co.uk/radio4/realplayer/media/fmg2.rpm
> The audio format is listed as "AUDIO: 22050 Hz, 2 ch, s16le, 44.1
> kbit/6.25% (ratio: 5512->88200)"
> In the output there is the message "Non-joint-stereo files are decoded
> with wrong gain at the moment!" so I am guessing this is the problem.
> 
> I am playing these stream with the following command line:
> 	mplayer -vo null -cache 128 -af
> volume=0,resample=44100:0:1,channels=2 -playlist http://xxxxxx
> The mplayer version information is:
> 	MPlayer dev-CVS-051221-17:56-3.4.2 (C) 2000-2005 MPlayer Team
> 	CPU: Intel Pentium 4/Celeron D Prescott; Xeon Nocona (Family: 15,
> Stepping: 4)
> 	CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 0 SSE2: 0
> 
> Please let me know if you need any more information.
> 
> Neil 

The first part of this bugreport is still happening (although a
recently update has broken playback of some streams completely). The
echo on the radio4 playback is now fixed.

Does anyone have an update on the buffer problem?

Thanks

Neil

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