Strange hi freq. noise on wmv playback

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darwinjob
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Strange hi freq. noise on wmv playback

Postby darwinjob » 09 Nov 2009 15:09

Hi
I experience strange hi frequency noise on wmv playback both on Win(XP32) and Linux(Ububtu9.10 64)
It is especially noticeable if you turn on equalizer and max out 12, 14 and 16 kHz.
You might say that this is such a bad record, but I don't hear any noise on Windows Media player.
Also, same noise exists when I play this wmv with MPlayer, Totem etc.

I guess the problem is wmv decoder...

Anyone experiences the same problem? Fix/solution?

VLC1.0.3

Jean-Baptiste Kempf
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Re: Strange hi freq. noise on wmv playback

Postby Jean-Baptiste Kempf » 10 Nov 2009 08:15

Try to use dmo codec (--codec dmo) with w32codecs installed.
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darwinjob
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Re: Strange hi freq. noise on wmv playback

Postby darwinjob » 10 Nov 2009 17:23

IT WORKED!!!
:D
for Windows...

but not for Ubuntu. I installed w64codecs from medibuntu repository - there is no difference if I run vlc --codec dmo or just vlc.
How can I see what codec is currently running? When I open Codec information window it always says wma2 for the sound stream.

Jean-Baptiste Kempf
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Re: Strange hi freq. noise on wmv playback

Postby Jean-Baptiste Kempf » 11 Nov 2009 18:33

IT WORKED!!!
:D
for Windows...

but not for Ubuntu. I installed w64codecs from medibuntu repository - there is no difference if I run vlc --codec dmo or just vlc.
How can I see what codec is currently running? When I open Codec information window it always says wma2 for the sound stream.
Windows version?
Jean-Baptiste Kempf
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darwinjob
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Re: Strange hi freq. noise on wmv playback

Postby darwinjob » 11 Nov 2009 19:38

WinXP Pro 32-bit SP3

I can also provide the wmv file. Will it help?

Jean-Baptiste Kempf
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Re: Strange hi freq. noise on wmv playback

Postby Jean-Baptiste Kempf » 11 Nov 2009 21:40

I doubt :D
Using dmo takes the reference driver from Windows Media Player 9 and should eliminate the issue.
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darwinjob
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Re: Strange hi freq. noise on wmv playback

Postby darwinjob » 11 Nov 2009 21:50

reference driver from Windows Media Player 9 and should eliminate the issue.
on Ubuntu? I doubt :D

Jean-Baptiste Kempf
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Re: Strange hi freq. noise on wmv playback

Postby Jean-Baptiste Kempf » 12 Nov 2009 00:40

Oh, yes, using w32codecs installs you the WMP .dlls
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darwinjob
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Re: Strange hi freq. noise on wmv playback

Postby darwinjob » 12 Nov 2009 09:48

Well, it is w64codecs in my case.
On XP I can clearly hear the difference between just "vlc" and "vlc --codec dmo", on Ubuntu there is no difference. Does this mean that w64codecs are not hooked up?

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Re: Strange hi freq. noise on wmv playback

Postby mc2man » 12 Nov 2009 18:17

Does this mean that w64codecs are not hooked up
dmo is only for the 32bit codecs (w32codecs, win32 codecs

Even if the dmo loader worked in 64 bit vlc it wouldn't matter, there's virtually no codecs in w64codecs (only a few rm .so's

If you had more recent shared ffmpeg libs and a vlc 1.02, 1.03 built off of the headers then you could get wma3(pro) decoding thru avcodec
or
build a current/recent x264 and ffmpeg sources as static (/usr/local/), first making sure there are no ffmpeg amd libx264 -dev packages installed ( check in synaptic) and then build vlc (preferably 1.03)

(wmal will not be decoded by vlc in 64 bit

there's absolutely no chance 9.10 will update ffmpeg, 10.4 is, as yet undetermined
Last edited by mc2man on 26 Nov 2009 01:44, edited 1 time in total.

darwinjob
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Re: Strange hi freq. noise on wmv playback

Postby darwinjob » 15 Nov 2009 18:11

Are you saying that if I update ffmpeg I would get a chance to fix the problem?

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Re: Strange hi freq. noise on wmv playback

Postby darwinjob » 25 Nov 2009 14:02

:!: :!: :!:
VLC 0.8.6 DOES NOT HAVE THIS PROBLEM
on XP32 at least...

Jean-Baptiste Kempf
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Re: Strange hi freq. noise on wmv playback

Postby Jean-Baptiste Kempf » 25 Nov 2009 20:58

Using dmo or not?
Jean-Baptiste Kempf
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darwinjob
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Re: Strange hi freq. noise on wmv playback

Postby darwinjob » 26 Nov 2009 01:57

NOT using dmo of course
with built-in codecs...

darwinjob
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Re: Strange hi freq. noise on wmv playback

Postby darwinjob » 30 Nov 2009 23:37

so... is it because of the new libavcodec?


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