[MPlayer-users] Problem using MPlayer and ALSA

[Pierre CLARENC]

 Hi,

>I have problems using Mplayer (MPlayer SVN-r30100-snapshot-4.4.1) with
ALSA.
>
>I want to play a RTP stream accessed through RTSP. When I use Ethernet
>interface, audio playback works well but when I use Wifi, audio playback
>works most of the time but sometimes I have the following message :
>
>[AO_ALSA] Write error: Broken pipe Audio :
>100.1%
>
>[AO_ALSA] Trying to reset soundcard.

>>I doubt your problem is related to mplayer, but rather caused by the
quality
>>of your wireless connection. You will generally want to use Ethernet or
fast
>>PLC for streaming, which are way more reliable (and fast) than wireless
>>communication. A little googling on that topic will tell you the same!

>>just my 2 cents,
>>Seb.

Thanks for you answer,

I agree with you but it's for a demonstration and the demonstration will be
better using Wifi than Ethernet :).
Moreover, it works when I use OSS (but sometimes I have problem of multiple
access to /dev/dsp file so I prefer use ALSA).


>>Does -cache help?

>>Carl Eugen

Thanks too,

I see no improvement using -cache option :

./mplayer rtsp://mylink/monfichier_mp3.mp4 -ao alsa -ac ffmp3 -cache 8192
-cache-min 4

Message is always the same when sound is crashing :

[AO_ALSA] Write error: Broken pipe Audio : 100.1%
[AO_ALSA] Trying to reset soundcard.

Another indication : when I use ALSA, pourcentage indicated (100 *
audio_time_usage / mpctx->delay) is always about "100%". When I use OSS, the
value is smaller : about "10%" maximum.
I have noticed that when I use ALSA, it tries to decode much data at the
same time than when I use OSS. Maybe, there is a link ?

Thanks in advance,

Pierre