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Some of the formats you list (e.g. WAV) are containers - they can contain many different types of encoded data, with an indicator to show what format the contents are in. You can have a .WAV containing MPEG I Layer-3 audio data, for example. Even for the other formats, the codec used to perform the compression normally has configurable options to allow you to select how much compression you want.
When most people think of WAV files, they're generally thinking of uncompressed PCM data, which is pretty much the worst choice in terms of space, but requires virtually no processing overhead.
That said, WMA and AAC are generally considered better quality for a given file size/bandwidth than MP3, while MPEG-4, WMV and H.264 are generally considered better quality than MPEG-1 or MPEG-2. HD DVD discs can be encoded with VC-1 (basically a slightly modified version of Microsoft's WMV9), H.264, MPEG-4 or MPEG-2. The greater compression you want, though, the longer it takes to compress, so it may not be able to compress in real time. This may mean it's better to record in a less compressed format to begin with then convert later to save disk space or reduce download times.
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Mike Dimmick wrote: That said, WMA and AAC are generally considered better quality for a given file size/bandwidth than MP3
Thank you very much for your comment. I also found that WMA could record a sound for a long time and consume less diskspace. I found that in my tablet pc, but the sound recording seem not so clear because some people are sitting far away location. I used it to record the sound in the meeting.
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The file format has nearly no bearing on the size of the file. What affects the size the most are the codecs used to compress (or encode) the data and the bit rates selected for the encoding. A higher bitrate will (usually) result in a higher quality playback, but also increases the size of the file.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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Thank you very much for your comment. If the bitrate is importance, why there are many difference sound format available today? Why they do not create only one file extentsion (Example WAV) and just increase or decrease its bitrate to change the quality of the sound and disk space usage?
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I said the bitrate AND the codec being used to encode it.
The file format, and it's extension, doesn't have any bearing on the size of the file, or very little. Why isn't there just one extension?? Because everybody comes up with their own "container format" to differentiate their product from everyone elses.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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Thank you very much for your explanation. Have a nice weekend 
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how to Enable/ disable FTP access to a system in the network
Thanks in Advance
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Not really a lot to go on there.
All I had to do was make sure that the FTP service was installed and running.
Make sure that you don't expose it to the outside world though. FTP sites that allow annon connections will be sniffed out and taken over quicker than you can say 'free FTP site'.
I did it once just to see what would happen and before I could Finnish one piece of pizza someone had started uploading ripped DVDs to the site and had taken it over.
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Ray Cassick wrote: I did it once just to see what would happen and before I could Finnish one piece of pizza someone had started uploading ripped DVDs to the site and had taken it over.
And were the DVD's any good ? 
Steve S
Developer for hire
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I have to admit that I did wait for them to finish and checked them out. Really bad rips and not in English so I deleted them.
They did manage to build a folder in the FTP directory that I could not delete though. They named it COM1 and the OS would not let me kill it.
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Ya Previously i had the FTP
But now some setting are changed ie.. IP/ permissions/
what can it be
Thanks in advance
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Hi all:
I'd like to avoid the reboot while installing the MSI package, I have some clues but they are not worked as expected.
MsiInstallProduct(szPath, _T("REBOOT=ReallySuppress"))
After executing the above line the system rebooted without any warning. How can I really suppress the reboot?
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I noticed that when I install programs such as Skype or MSN it adds some registry entries to HKCR (HKEY_CLASSES_ROOT), and this was done even if I'm in regular user (not power user or administrator). How is this possible? I though only administrator or power user have access to add this key?
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Since Windows 2000, the HKEY_CLASSES_ROOT key is a merged view of HKEY_LOCAL_MACHINE\Software\Classes and HKEY_CURRENT_USER\Software\Classes. The user's settings override the machine settings. You can therefore make a setting in HKCU which the user can write to. It's disappointing that more installers don't do this. Windows Installer knows about the difference and will write to the user's classes keys as appropriate if doing a per-user rather than per-machine install.
The user's settings are still machine-specific - they are stored in the UsrClass.dat file in the user's Local Settings\Application Data\Microsoft\Windows folder. Therefore, even for a roaming profile, they don't roam.
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dude_4453169 wrote: I'm in regular user (not power user or administrator)
Hi, as far as I know, a simple user do not have a user right to install any application. What is the group membership that your user account belong to?
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Hello all, sorry if this is the wrong forum but I've no idea where else to ask.
I've created an ActiveX control using a 3rd party's tools (QT). To distribute the control I create an .inf file and wrap the .dll(the control) and the .inf within a .cab file. In this way, the control is downloaded from the web much the same as the Flash control. This all works great, and distribution does not seem to be an issue. The problem is, when I look within the 'c:\windows\downloaded program files' directory, my control is listed there, but its status is always 'Unknown'. It's driving me crazy trying to figure it out. I've torn apart the registry and looked into everything I could think of, but nothing seems to help.
So my question: does anyone know how the 'Downloaded Program Files' folder determines if a control is 'installed'?
I'd love to ignore the problem, but I want to be able to update the application using '#version' in my OBJECT tag's CODEBASE property, and it doesn't seem to work if the 'status' is 'unknown'.
Anybody have an ideas?
Thanks in advance,
Matt
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Hi,
Don't you have to register the ActiveX control. I actually can't remember the exact syntax right now but I recall having to do it when using one. It's a simple command you can run at the command line.
Not sure if you have tried this yet.
Laurie Hull
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This explains how to do it:
<a href="http://activex.moonvalley.com/register_activex_control.htm">
Laurie Hull
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Thanks Laurie.
I actually found the problem. It's very exciting and frustrating at the same time. There is a registry key created by registering the control and it places quotes around the file name when there should not be. Thus, the 'Downloaded Program Files' folder, which looks at this key to tell if it's installed, could not find the folder - so it would like it's status as 'Unknown'.
HKLM\SOFTWARE\Classes\CLSID\{GUID}\InProcServer32
(Default) was equal to "C:\windows\downloaded program files\pview.dll"
when it should have been C:\windows\downloaded program files\pview.dll
Such a silly problem to have...
Also, my version control within HTML seems to work fine now...
Thanks,
Matt
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Great, It's always something silly isn't it thought. Glad you found your answer.
Laurie Hull
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I am trying to run an lcd command on a networked server. When I run the command locally from my machine it works. If I run the command from the .bat file (uses ftp -s [filename]) on the machine directly I get permission denied.
ftp> lcd [physical path]
> [physical path]: Permission Denied
I have asked my IT department to check read/write permissions and they are supposedly set. Any idea why this would work when running on my local machine but not when running directly on the server?
FYI-have also tried UNC naming convention instead of physical path - still get error.
Laurie Hull
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I am working on remote machine,
first time I am able to login , but secong time I try to login I get this error
ERROR_CTX_WINSTATION_BUSY
7024
the requested operation cannot be completed because the terminal connection is currently busy processing a connect operation
Can anybody help me to resolve this problem.
thanks
swati
thanks swati
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VPN Client ------------------ VPN Server (W2k3) ---------------- DSL Router ------------------ Internet
10.0.0.2 (255.255.255.255) 10.0.0.1 (255.255.255.255)
192.168.1.2 (255.255.255.0) 192.168.1.1 (255.255.255.0)
The problem ist, VPN Client cannot reach the internet.
I want to make VPN Client reach the internet.
How to do that ?
Something with route command in W2k3 ?
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stancrm wrote: 10.0.0.2 (255.255.255.255) 10.0.0.1 (255.255.255.255)
Try to change to 10.0.0.x and subnet mask is 255.0.0.0
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I have tried it, but VPN server create it automatically using 255.255.255.255.
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