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VLC 0.9.2 may be to see russian name of device Windows Vista x64, but it's name use illegal, at seen below:

:dshow-adev=""
:dshow-adev="none"
:dshow-adev="Analog Audio In (Behold TV M6 E"
:dshow-adev="���. ���� (SoundMAX Integrated "
:dshow-adev="�������� (Logitech Mic (QuickCa"
:dshow-adev="�������� (SoundMAX Integrated D"
:dshow-adev="����� �0, ���� ������"
:dshow-adev="����� �0, �������� ����"

VLC has see it as like seen Skype version 3.6.0.244, so is both don't worked propertly.
Now, Skype corrected it's program in version 3.8.0.180, and seen russian's names of Logitech and work correct.

Nevertheless, why VLS don't like non russian name "Analog Audio In (Behold TV M6 E" as audiodevice?

Does this work any better on nightlies?
http://nightlies.videolan.org/build/win32/latest/

Does this work any better on nightlies?
http://nightlies.videolan.org/build/win32/latest/

Problem don't be solved.
It's again to persist in 0.9.4 version too.

Does Tools -> Messages... (set Verbosity to 2) and then open the device show those same names in message log?

Does Tools -> Messages... (set Verbosity to 2) and then open the device show those same names in message log?

I'm seen for "dshow:// :dshow-vdev="Beholder A/V Capture (SAA7135)" :dshow-adev="Analog Audio In (Behold TV M6 E"" customize in "Open Capture Device...":

main info: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.

If use a full name "Analog Audio In (Behold TV M6 Extra)"", has got onto Skype dialogs, then message is as below:
"Capturing failed:
VLC cannot use the device "Analog Audio In (Behold TV M6 Extra)", because its type is not supported."
for customize parameter "dshow:// :dshow-vdev="Beholder A/V Capture (SAA7135)" :dshow-adev="Analog Audio In (Behold TV M6 Extra)""

If use other Audio Devices, is given:
"Capturing failed:
VLC cannot use the device "Микрофон (Logitech Mic (QuickCa", because its type is not supported."

Audio device not functioned in any case, so VLC mute for "DirectShow" by "Input Access Modules" for all version VLC, begin on 0.8.4.

P.S. It's right apply to Windows Vista x64 Home Basic edition with TV-tuner "Behold TV M6 Extra".
MPC HC worked properly with both x64 and x86 compilations.

Do you also get other errors/warnings, like:
failed to create the device enumerator, failed to create the class enumerator, no capture device was detected or couldn't bind moniker to filter ?

Don't failed, but VLC ignore AudioDevices in "show://" mode. Sound is mute, absent etc. My ears never was hear BeholdTV sound by VLC.

Besides, names in popup dialog not seen correctly. I'm mean because VLC don't support unicode-font in device enumerator.

VLC been report error like as "no capture device was detected" if only manually set correct name. I'm mean, that VLC truncate devices long name.
VLC use name is the "Analog Audio In (Behold TV M6 E".
I'm wrote is the correct name: "Analog Audio In (Behold TV M6 Extra)". But it's following error in "Tools->message".

P.S. See also log of other error.

I am just trying to figure out if the issue is in DirectShow plugin or in QT4. DirectShow uses string for storing device names so there shouldn't be any issue with device names length. But I am not sure about QT4.
EDIT: You should be able to figure this out by starting vlc from command line with Directshow option. If it works, then the issue is QT4 related.

You should be able to figure this out by starting vlc from command line with Directshow option. If it works, then the issue is QT4 related.

1. From example, existing device in command line Russian chars visualized correctly:
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" dshow:// :dshow-tuner-channel=23 :dshow-vdev="Beholder A/V Capture (SAA7135)" :dshow-adev="Микрофон (Logitech Mic (QuickCa"So, the Russian name in error message is visualized normally.
If enter device name from dialog in "Open device Capture..." then message is: So, VLC not supported extension symbols, but it's not my a problem with ignoring device "".

2. In command line, channel normal loaded and switching, but audiodevice don't attached correctly.
For example:
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" dshow:// :dshow-tuner-channel=23 dshow:// :dshow-vdev="Beholder A/V Capture (SAA7135)" :dshow-adev="Analog Audio In (Behold TV M6 Extra)"
Before, I'm set default properties for audiodevice is "□□□□□□□□ (Logitech Mic (QuickCa" from list of devices.
On result, error message is: "Capturing failed:
VLC cannot use the device "�������� (Logitech Mic (QuickCa", because its type is not supported."

Why VLC ignored ":dshow-adev="Analog Audio In (Behold TV M6 Extra)"" from command string?

After setting "Tools->Preferences->Input/Codecs->AccessModules->DirectShow->Video/Audio device name" to default, then run a command line:
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" dshow:// :dshow-tuner-channel=5 dshow:// :dshow-vdev="Beholder A/V Capture (SAA7135)" :dshow-adev="Analog Audio In (Behold TV M6 Extra)"

In "Tools->Messages..." been found is: Sound is not played, but seen symbol "(X)" (stop) near the loud speaker symbol.
So, audio device not attached.
How is solve the problem with sound?

Does the sound work if you leave dshow-vdev empty?

Does the sound work if you leave dshow-vdev empty?

Sound not usable in "dshow://" with empty. Video is normal.

If you use :dshow-vdev="none" it is also same?

If you use :dshow-vdev="none" it is also same?

I'm see normal video from default preset "Tools->Preference...->InputCodecs->AccessModules->DirectShow".
String "Location" is "dshow://:dshow-tuner-channel=35 :dshow-vdev="none"" in Playlist Info.

Remove :dshow-tuner-channel=35 but keep :dshow-vdev="none", and audio doesn't still work?

Remove :dshow-tuner-channel=35 but keep :dshow-vdev="none", and audio doesn't still work?

Audio is not worked, anyway...
Load command from M3U-file: And, load command "dshow://:dshow-vdev="none"" from menu "Open Capture Device...", but video consist previous state as is as don't used parameter "none".

Other command, with space:
"dshow:// :dshow-vdev="none""
As result, menu "Tools->Messages..." consist error:
"Capturing failed:
VLC cannot use the device "none", because its type is not supported."

I figured that none doesn't mean anything to VLC. It tries to open it anyway. Does the audio configuration option in Directshow tab offer any audio options for your audio device?

I figured that none doesn't mean anything to VLC. It tries to open it anyway. Does the audio configuration option in Directshow tab offer any audio options for your audio device?

I do not know.
The new version of VLC 1.0.3 is displayed correctly.