Проблема с потоковой передачей RA с помощью mplayer

Я пытаюсь воспроизвести потоковое видео с mplayer с этого URL:

rtsp://mm6.rai.it/radiofonia/radio3/napoli/battiti/2012/battiti2012_10_04.ra 

Я использую для выполнения команды mplayer rtsp://url.ra , но теперь это похоже не работает

 MPlayer2 UNKNOWN (C) 2000-2011 MPlayer Team 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://mm6.rai.it/radiofonia/radio3/napoli/battiti/2012/battiti2012_10_04.ra. Resolving mm6.rai.it for AF_INET6... Couldn't resolve name for AF_INET6: mm6.rai.it Resolving mm6.rai.it for AF_INET... Connecting to server mm6.rai.it[212.162.85.53]: 554... librtsp: server responds: '' librtsp: server responds: '' rtsp: read error. librtsp: server responds: '' Cache size set to 640 KBytes Cache fill: 0.00% (0 bytes) Cache not filling, consider increasing -cache and/or -cache-min! Detected file format: REAL Stream description: Audio Stream Stream mimetype: audio/x-pn-realaudio [real] Audio stream found, -aid 0 RM: No audio stream found -> no sound. No stream found. Exiting... (End of file) 

После небольшого googleing я обнаружил, что проблема в libav, поэтому я mplayer --demuxer=lav rtsp://url.ra команду mplayer --demuxer=lav rtsp://url.ra

 MPlayer2 UNKNOWN (C) 2000-2011 MPlayer Team 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://mm6.rai.it/radiofonia/radio3/napoli/battiti/2012/battiti2012_10_04.ra. Resolving mm6.rai.it for AF_INET6... Couldn't resolve name for AF_INET6: mm6.rai.it Resolving mm6.rai.it for AF_INET... Connecting to server mm6.rai.it[212.162.85.53]: 554... librtsp: server responds: '' librtsp: server responds: '' rtsp: read error. librtsp: server responds: '' Cache size set to 640 KBytes Cache fill: 0.00% (0 bytes) Detected file format: RealMedia format (libavformat) Cache not filling, consider increasing -cache and/or -cache-min! [lavf] stream 0: audio (cook), -aid 0 Clip info: title: BATTITI DEL 04.10.2012 author: BATTITI copyright: Copyright © 1997 2000 Netia Digital Audi comment: ========================================================================== Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders ad_ffmpeg: initial decode failed ADecoder init failed :( Could not open audio decoder ffmpeg. Opening audio decoder: [realaud] RealAudio decoder Error: /usr/lib/codecs/cook.so: cannot open shared object file: No such file or directory Win32 LoadLibrary failed to load: /usr/lib/codecs/cook.so Error loading dll ERROR: Could not open required DirectShow codec cook.so. Read the RealAudio section of the DOCS! ADecoder preinit failed :( Could not open audio decoder realaud. Opening audio decoder: [realaud] RealAudio decoder AUDIO: 22050 Hz, 1 ch, s16le, 20.7 kbit/inf% (ratio: 2583->0) Selected audio codec: [racook] afm: realaud (RealAudio COOK) ========================================================================== [AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or directory AO: [alsa] 22050Hz 1ch s16le (2 bytes per sample) Video: no video Starting playback... MPlayer interrupted by signal 8 in module: decode_audio 

Команда mplayer -ac help сообщит мне, что cook.so кодек cook.so

 ... ... ra10cook realaud working RealPlayer 10 COOK audio [cook.so] racook realaud working RealAudio COOK [cook.so.6.0] ... 

Я использую последнюю версию linux mint с ядром 3.2.0.

EDIT: Если я загружаю потоковое видео и, в конечном счете, играю с mplayer, все работает нормально.

В чем проблема?