From: "Brad Midgley" <bmidgley@gmail.com>
To: "BlueZ users" <bluez-users@lists.sourceforge.net>
Subject: Re: [Bluez-users] Choppy sound with a2dp and mplayer
Date: Fri, 23 Nov 2007 11:01:08 -0700 [thread overview]
Message-ID: <d89ddf300711231001q12190488p712e69a42885a3d8@mail.gmail.com> (raw)
In-Reply-To: <9a119b3c0711230758v7fa8a53eub2532227762542bd@mail.gmail.com>
Kristof
It may also be an issue for us right now if mplayer does its video
decoding in the same thread as the audio processing. Trying another
player and/or the gstreamer plugin in your setup would tell us more.
Brad
On Nov 23, 2007 8:58 AM, Csillag Krist=F3f <csillag.kristof@gmail.com> wrot=
e:
> Hi all!
>
> I am using bluez 3.22.
>
> I have successfully configured the audio system with
> my stereo Bluetooth headset, and a2dp & avrcp work now.
>
> I have an ALSA device named "headset", and when an
> applications (xmms, audacious, etc.) send sound to it,
> it appears on my headset. So good, so far.
>
> However, when I try to use it with mplayer, I get choppy
> output. Playback is smooth for a few seconds, but then
> it breaks up. I can not find any error/warning messages
> in the output of mplayer.
>
> I have made several tests. Here are the results:
>
> 1. Q: mplayer x.avi -ao alsa:device=3Dheadset
> A: choppy
>
> 2: Q: mplayer x.avi -dumpaudio
> mplayer stream.dump -ao alsa:device=3Dheadset
> A: fluent
>
> 3: Q: mplayer x.avi -ao alsa:device=3Dheadset -vc null -vo null
> A: choppy
>
> So, mplayer _can_ play the sound track of the file via the bt headset,
> without any problems. However, if the video stream is there in the file,
> even if it's not decoded at all, audio collapses.
>
> Because of this, I guess this must be some timing/caching issue.
> Do you agree? If no, what else? If yes, how can I make mplayer cache
> more audio while playing?
>
> (I have already configured hcid to be always master and no rswitch, but
> this did not help.)
>
> Any idea?
>
> Thank you for your help:
>
> Kristof Csillag
>
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Brad
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prev parent reply other threads:[~2007-11-23 18:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-23 15:58 [Bluez-users] Choppy sound with a2dp and mplayer Csillag Kristóf
2007-11-23 18:01 ` Brad Midgley [this message]
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