[Mplayer-dvb] Noises while using AC3 over DVB

[Sebastian Schöps]

Nico wrote:
> 
> Sebastian Schöps wrote:
> 
>> Nico schrieb:
>>
>>> -hwac3 just copies the audio stream  from the demuxer to the hw-ac3 
>>> passthru;
>>> since you may be using 3 different demuxers (PS, TS, AVI) I can't 
>>> believe that all of them have the same bug,
>>> so either it's a bug in the hwac3 audio-out or your speakers have 
>>> some problem; are you sure other programs always
>>> play those multichannel audio files correctly?
>>
>> I tried to play a DVD (DD5.1) via mplayer and the dvd-plugin from VDR 
>> (http://www.cs.uni-magdeburg.de/~aschultz/dvd/). Only the mplayer 
>> produces the noise in the center speaker. So the question is, what 
>> makes the difference between this plugin and mplayer. Do you have a 
>> similar configuration (vdr,dvd,ac3,..)? 
> 
> no external AC3 decoder,  and I haven't used VDR for a long time (I used 
> xvxine as output device)

I seems like we cannot solve this problem. I'm wondering, that nobody 
else have it.
I have recompiled mplayer several times and tested even older versions. 
There has to be an incompatibility somewhere. My next step is 
downgrading to kernel 2.4.x.

> 
>> I have no other players to check, but I think it's obvious, that the 
>> problem is mplayer related. Maybe the new kernel is the reason? I'm 
>> using mplayer for a long time and this problem is new to me.
>>
>>> Can you please try to use -novideo instead of -vo mpegpes?
>>> Recently someone discovered a bug triggered when you used -vo mpegpes 
>>> with -ao != mpegpes, but it
>>> manifested itself in a different way; maybe they are unrelated, but 
>>> trying doesn't hurt.
>>
>> I don't have any sound, when using "-novideo".
> 
> this is very strange: you should hear sound. And if you use both -vo 
> mpegpes -ao mpegpes ?
"mplayer -vo mpegpes -ao mpegpes -ac hwac3 dd.vob"
--> audio&video
"mplayer -novideo -ao mpegpes -ac hwac3 dd.vob"
-->  no audio & no video
"mplayer -novideo -vo mpegpes -ao mpegpes -ac hwac3 dd.vob"
--> no audio & strange video

Bye
-Sebastian