[MPlayer-users] Realaudio streaming: garbled output

[Bob Dony]

Hello,

I have had this problem for some time.  I am listening to a realaudio 
stream (e.g. BBC Radio 3) using mplayer and after some time (random 
intervals it seems) the audio becomes garbled.  When I switch over to 
RealPlayer, it works fine (but the bitrate appears to drop from an initial 
20 kbps to 11 kbps & there is the occasional "tinny" sound).  I suspect 
that there is a heavy load on the server causing a degraded stream.

My particulars:
Linux - Fedora Core 5 
mplayer: MPlayer 1.0pre7-4.0.0 (C) 2000-2005 MPlayer Team
T1 connection or above

An example session:
% mplayer -cache 512 rtsp://rmlivev8.bbc.net.uk/farm/*/ev7/live24/radio3/live/r3_dsat_g2.ra
Using GNU internationalization
Original domain: messages
Original dirname: /usr/share/locale
Current domain: mplayer
Current dirname: /usr/share/locale

MPlayer 1.0pre7-4.0.0 (C) 2000-2005 MPlayer Team
CPU: Intel Pentium 4/Xeon/Celeron Foster (Family: 8, Stepping: 4)
Detected cache-line size is 64 bytes
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1

Linux RTC init error in ioctl (rtc_irqp_set 1024): Permission denied
Try adding "echo 1024 > /proc/sys/dev/rtc/max-user-freq" to your system 
startup scripts.
Opening joystick device /dev/input/js0
Can't open joystick device /dev/input/js0 : No such file or directory
Can't init input joystick
Setting up LIRC support...
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support.
You will not be able to use your remote control.
Playing 
rtsp://rmlivev8.bbc.net.uk/farm/*/ev7/live24/radio3/live/r3_dsat_g2.ra.
Resolving rmlivev8.bbc.net.uk for AF_INET6...
Couldn't resolve name for AF_INET6: rmlivev8.bbc.net.uk
Resolving rmlivev8.bbc.net.uk for AF_INET...
Connecting to server rmlivev8.bbc.net.uk[212.58.224.105]:554 ...
Cache size set to 512 KBytes
Connected to server: rmlivev8.bbc.net.uk
Cache fill: 18.75% (98304 bytes)    REAL file format detected.
Stream description: Audio Stream
Stream mimetype: audio/x-pn-multirate-realaudio-live
demux_real: invalid chunksize! (0)
Clip info:
  name: BBC Radio 3
  author: BBC
  copyright: (C) British Broadcasting Corporation 2006
==========================================================================
Opening audio decoder: [realaud] RealAudio decoder
opening shared obj '/usr/lib/win32/cook.so'
Audio codec: [23] 44 Kbps Stereo Music High Response - RealAudio
Audio bitrate: 44.100 kbit/s (5513 bps)
AUDIO: 44100 Hz, 2 ch, s16le, 44.1 kbit/3.13% (ratio: 5513->176400)
Selected audio codec: [ra10cook] afm:realaud (RealPlayer 10 COOK audio)
==========================================================================
Checking audio filter chain for 44100Hz/2ch/s16le -> 44100Hz/2ch/s16le...
AF_pre: 44100Hz/2ch/s16le
AO: [oss] 44100Hz 2ch s16le (2 bps)
Building audio filter chain for 44100Hz/2ch/s16le -> 44100Hz/2ch/s16le...
Video: no video
Starting playback...


Any help would be more than appreciated.