Re: [MPlayerOSX-devel] mplayer audio bug in Panther?

[Andy K. <kor...@mr...>]

On Sep 8, 2004, at 3:18 AM, scott r. looney wrote:
> hey guys, thanks for such a great product.  i've used mplayer a bit =
and
> have recommended it to all my friends.
>
> in the past i have had no serious issues with earlier version but
> recently, i've been trying out mplayer version 2.0b8 (not r2) on the
> Mac and i have had a consistent problem that comes up - every time a
> Divx or 3IVx file is played back using the software, the audio comes
> out high pitched and totally garbled in bursts - the video plays back
> fine, however.
>
> Troubleshooting/Testing:
> this behavior occurs starting at version 2.0b5 of the software going
> upwards, and does not affect earlier versions.
>
> here's what i've done to try to get around the problem - on most older
> Divx files (Ver 3 and ver 4) i am able to play them back perfectly
> using mplayer 2.0b4 down to 1.1.
>
> oddly enough version 2.0b5 upwards of your program seems to have no
> problems playing back Xvid movie files.  it just seems that the rest =
of
> the other file types cause garbled audio.
>
> my system:Mac G4 500Mhz (sawtooth) 1Gig RAM, OS 10.3.5
>
>
> *****Possible clue - looks like the audio driver was updated as of
> version 2.0b5.   I am currently using a Tascam FW-1884 (like a =
Digi002)
> Firewire interface with multiple outs.  looks like the audio out wants
> to see 2 channels available only for output and instead it returns 18
> channels (the total number of outputs available on the Firewire unit).
> is there any way to tell it to use 2 channels like the older versions
> of the software do?  Check out this clip from the console dump:
>
> 2.0b5
> "AO: [macosx] 44100Hz 18ch Floating Point (4 bps)
> Building audio filter chain for 44100Hz/2ch/16bit ->
> 44100Hz/18ch/32bit...
> [channels] The number of output channels must be between 1 and 6.
> Current value is 18
> Couldn't find matching filter / ao format!"
>
> 2.0b4
> "AO: [sdl] 44100Hz 2ch Signed 16-bit (Big-Endian) (2 bps)
> Building audio filter chain for 44100Hz/2ch/16bit ->
> 44100Hz/2ch/16bit...
> Starting playback..."
>
> i guess it would be really nice to have the ability to switch between
> sdl and macosx since sdl plays back the audio fine.
>
> has anyone else had these garbled audio issues on newer versions of
> mplayer?  whatever help you may be able to give would be greatly
> appreciated.
>
> best
>
> --
> scott
> ol...@lm...
>
Hello all,

I've had what is probably a related problem. I filed a bug report =20
(probably at the wrong place) at:
http://sourceforge.net/tracker/index.php?=20
func=3Ddetail&aid=3D1021355&group_id=3D62947&atid=3D502356

It read:
------
  Hello,
  I recently downloaded MPlayer OS X 2 8r2. Audio from any movie
  files will not play over my M-Audio Revolution 7.1 sound card. I
  have tried different settings for -ao, with no avail.

  If I go to the sound countrol panel, I can choose between my
  internal speaker (Built-in audio) or my "Revolution Analog 7.1
  Out". My other applications, (Finder, iTunes, Quicktime) all play
  through my sound card just fine. In addition, Mplayer OS X 2b7
  works through the sound card.

  If I change my sound to the internal speaker, everything works
  fine, but sound quality doesn't quite compare :)

  I'm running 10.3.4 on a 1.6 GHz single procecssor G5 (1 GB ram).

  There are some kernel extentions installed so the system can use
  the sound card:
  MAudioRevolutionJaguarG5.kext, etc...

  I built mplayer from source from the nightly snapshot, but I still
  had the same problem.
---------

When playing audio through my soundcard on the new version of mplayer, =20=

the error I see is:

AO: [macosx] 44100Hz 8ch Floating Point (4 bps)
Building audio filter chain for 48000Hz/2ch/16bit -> =20
44100Hz/8ch/32bit...
[channels] The number of output channels must be between 1 and 6. =20
Current value is 8
Couldn't find matching filter / ao format!

Back in the days of mplayer 2b7, I used to run it with -ao sdl, and =20
that worked great.
Now when I try it:

Could not open/initialize audio device -> no sound.
Audio: no sound

On the mplayer OS X page, it reads:
  =95 Mplayer is now compiled without sdl support
  =95 Primary vo output is -vo macosx (made by Nicolas Plourde)

I think it would be great to have sdl support, since I need it to play =20=

audio over my sound card.

(anyway, both of us seem to have the problem with too many sound =20
channels, which is causing the problem)

Thanks everyone, mplayer is a wonderful piece of software!
Andy