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Strange hi freq. noise on wmv playback
Posted: 09 Nov 2009 15:09
by darwinjob
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
Re: Strange hi freq. noise on wmv playback
Posted: 10 Nov 2009 08:15
by Jean-Baptiste Kempf
Try to use dmo codec (--codec dmo) with w32codecs installed.
Re: Strange hi freq. noise on wmv playback
Posted: 10 Nov 2009 17:23
by darwinjob
IT WORKED!!!
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.
Re: Strange hi freq. noise on wmv playback
Posted: 11 Nov 2009 18:33
by Jean-Baptiste Kempf
IT WORKED!!!
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?
Re: Strange hi freq. noise on wmv playback
Posted: 11 Nov 2009 19:38
by darwinjob
WinXP Pro 32-bit SP3
I can also provide the wmv file. Will it help?
Re: Strange hi freq. noise on wmv playback
Posted: 11 Nov 2009 21:40
by Jean-Baptiste Kempf
I doubt
Using dmo takes the reference driver from Windows Media Player 9 and should eliminate the issue.
Re: Strange hi freq. noise on wmv playback
Posted: 11 Nov 2009 21:50
by darwinjob
reference driver from Windows Media Player 9 and should eliminate the issue.
on Ubuntu? I doubt
Re: Strange hi freq. noise on wmv playback
Posted: 12 Nov 2009 00:40
by Jean-Baptiste Kempf
Oh, yes, using w32codecs installs you the WMP .dlls
Re: Strange hi freq. noise on wmv playback
Posted: 12 Nov 2009 09:48
by darwinjob
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?
Re: Strange hi freq. noise on wmv playback
Posted: 12 Nov 2009 18:17
by mc2man
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
Re: Strange hi freq. noise on wmv playback
Posted: 15 Nov 2009 18:11
by darwinjob
Are you saying that if I update ffmpeg I would get a chance to fix the problem?
Re: Strange hi freq. noise on wmv playback
Posted: 25 Nov 2009 14:02
by darwinjob
VLC 0.8.6 DOES NOT HAVE THIS PROBLEM
on XP32 at least...
Re: Strange hi freq. noise on wmv playback
Posted: 25 Nov 2009 20:58
by Jean-Baptiste Kempf
Using dmo or not?
Re: Strange hi freq. noise on wmv playback
Posted: 26 Nov 2009 01:57
by darwinjob
NOT using dmo of course
with built-in codecs...
Re: Strange hi freq. noise on wmv playback
Posted: 30 Nov 2009 23:37
by darwinjob
so... is it because of the new libavcodec?