On Thu, 2005-07-21 at 11:11 -0700, Neil Sleightholm wrote: > If anyone with this problem has time you could try running mplayer > directly to confirm this is the same problem. The following command > line will play the live Radio4 stream: > mplayer -vo null -cache 128 > rtsp://rmlivev8.bbc.net.uk/farm/*/ev7/live24/radio4/live/r4_dsat_g2.ra > > I find this this will run for anything from a few seconds to hours but > eventually the output will be garbled. I think Triode's comment about > "dynamic rate adaption" is probably true because I find this is worse > for popular times of the day (Chris Moyles on R1 and the Archers on > R4). > > If there is anyone out there that knows how mplayer works or can debug > it please feel free to jump in....
I've been meaning to try this for a while so, inspired by your post, I tried this tonight. After just over 20 minutes the stream became garbled exactly as I get when listening over Slimserver/Squeezebox. I then killed and started Mplayer again to unscramble the audio. According to the headers reported by Mplayer, the bit rates are the same between the two runs. In both cases: Opening audio decoder: [realaud] RealAudio decoder opening shared obj '/usr/lib/win32/cook.so.6.0' Audio codec: [11] 44 Kbps Stereo Music Audio bitrate: 44.100 kbit/s (5513 bps) AUDIO: 22050 Hz, 2 ch, 16 bit (0x10), ratio: 5513->88200 (44.1 kbit) Selected audio codec: [racook] afm:realaud (RealAudio COOK) So, unless it was a bit rate change that lasted no more than a minute, Mplayer is incorrectly reporting the bitrates, or I'm incorrectly reading the Mplayer messages, it doesn't look like a dynamic bit-rate change to me. However, it does confirm it to be an Mplayer problem, and nothing to do with AlienBBC/Slim Devices/Squeezebox. This is using: MPlayer 1.0pre6-3.3.3 (C) 2000-2004 MPlayer Team CPU: Intel Pentium 4/Xeon/Celeron Foster (Family: 8, Stepping: 9) Detected cache-line size is 64 bytes CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 On: Linux Eagle 2.6.10-1.771_FC2smp #1 SMP Mon Mar 28 01:10:51 EST 2005 i686 i686 i386 GNU/Linux -- "The biggest problem encountered while trying to design a system that was completely foolproof, was, that people tended to underestimate the ingenuity of complete fools." (Douglas Adams) _______________________________________________ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
