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- ActiveX Controls Licensing
- Purchase questions
- AV Manager
- Create Your Setup Disk
- Image Viewer CP ActiveX Control
- Image Viewer CP Pro ActiveX Control
- Movie Player ActiveX Control
- Movie Player Pro ActiveX Control
- MI Thumbnail ActiveX Control
- Screen2Video ActiveXControl
- VideoCap ActiveX Control
- VideoCap Live ActiveX Control
- VideoEdit ActiveX Control
- VideoEdit Pro ActiveX Control
- VideoEdit Mobile ActiveX Control
- VideoEdit Converter Pro
- WMV Profile Editor ActiveX Control
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ActiveX Control Licensing
Q1: What is Developer License?
Q2: How many type of License?
Q3: Do I have to pay any runtime royalties?
Q4: Does this mean that, if I buy Viscomsoft activex control, I don't have to pay license fees to patent holders related to the functions of viscomsoft activex control?
Q5: Who can use my license?
Q6: Can I use my license on my laptop?
Q1:What is Developer License?
A1: One Developer License is required per developer and per development computer and is non transferable.
Q2:How many type of License?
A2: Single Developer License. 1 Developer License (One Developer License is required per developer and per development computer ).
Team Developer License. 4 Developer Team License (One Developer License is required per developer and per development computer).
Site Wide License. Allows Unlimited Developers at a Single Physical Address.
Q3: Do I have to pay any runtime royalties?
A3: No. There is no royalty fee for redistributing the Viscomsoft ActiveX Control with your software.
Q4: Does this mean that, if I buy Viscomsoft ActiveX control, I don't have to pay license fees to patent holders related to the functions of viscomsoft activex control?
A4:The Viscomsoft activex control contains a variety of functions that may be used by developers as they implement products, including products that support various industry standards. Implementations of products in accordance with such standards, or the standard-enabled platforms, may require licenses from various entities. Such licensing is not provided by Viscomsoft activex control.
for example: MP3 codec are not royalty free.
Q5: Who can use my license?
A5: Licensing is per developer. Each developer using the software will need a separate license.
Q6: Can I use my license on my laptop?
A6: If you purchased single developer license, you only allow installed one development computer in same time.
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Purchase questions
Q1: I have not credit card, how can I purchase your products?
Q2: After I paid the order, I have not received the software, How can I do?
Q1:I have not credit card, how can I purchase your products?
A1: After you press check out button in our purchase page, you can select different payment method, wire transfer, credit card, paypal, fax order.
Q2:After I paid the order, I have not received the software, How can I do?
A2: After you paid the order, we will send the full version download link to you within 24 hours, if you have not received the email after 48 hours.
It may your email server blocked some email address, try use another email account send a email to us and tell us what is your order no.
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AV Manager
Q1: I am having some difficulty with getting the scheduler to work. I keep getting an error message when I try and upload a schedule "Invalid IP" - "Failed to connect" yet it does recognise the display PC in the list?
Q2: I installed av scheduler in win xp pro SP2. If i turn off firewall , I can upload schedule from av manager. I don't want to turn off firewall, how can I still upload the schedule from av manager?
Q3: What is OEM license?
Q4: How can I playback DVD in AV Manager?
Q5: Does AV Manager support display power point presentation?
Q6: AV Manager support Multi-Zone function. How many zone can I create in the same time?
Q7: What video formats does AV Manager support?
Q8: I have two Plasma Display, does AV Manager supports multi-monitor?
Q9: After I bought OEM license, Can I change the icon of the executable?
Q1: I am having some difficulty with getting the scheduler to work. I keep getting an error message when I try and upload a schedule "Invalid IP" - "Failed to connect" yet it does recognise the display PC in the list?
A1: It may av manager cannot upload schedule and content to av scheduler's ftp server. Please see
Diagnose AV Manager upload schedule problem to diagnose the ftp sever whether working or not.
Q2: I installed av scheduler in win xp pro SP2. If i turn off firewall , I can upload scheduler from av manager. I don't want to turn off firewall, how can I still upload the schedule from av manager?
A2: AV scheduler will open port 7000 to receiving the signal from av manager. You need set firewall to non blocking the AV scheduler and firewall may block ftp server in av scheduler's computer, select Windows Firewall - Exceptions tab, add port, input Port number 21. Please see here. It will allow ftp server accept connections.
Q3: What is OEM license?
A3: OEM license is one time cost. It allow changed the software name to your software name. Your customer will not know this software is written from us.
Q4: How can I playback DVD in AV Manager?
A4: If you want to playback vob or MPEG2 file in AV manager, you need installed DVD decoder, after installed dvd decoder, you should can playback vob or MPEG2 file on window media player. e.g. WinDVD will installed DVD decoder.
Q5: Does AV Manager support display power point presentation?
A5: Yes. After you installed PowerPoint Viewer 97, it can display power point file in web content. The power point viewer must 97 version.
Q6: AV Manager support Multi-Zone function. How many zone can I create in the same time?
A6: AV Manager allows user to split to 12 zone in one single screen.
Q7: What video formats does AV Manager support?
A7: AV Manager supports a variety of video formats including MOV, Windows Media Video (WMV), DIVX, ASF, AVI, and MPEG1, MPEG2 (need installed dvd decoder).
Q8: I have two Plasma Display, does AV Manager supports multi-monitor?
A8: Yes. You only buy multi-monitor display card. In Layout Content, the screen size is user define. Set the screen size to sum of two display.
Q9: After I bought OEM license, Can I change the icon of the executable?
A9: Yes. The OEM version of AV manager allows you to customize the icon displayed both in your application, as well as the icon associated with the executable of your published application. You can send ico file (32x32 256 color) to us. We will customize the icon of your version.
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Create Your setup disk
Innosetup is a freeware that allow create setup programs for Our ActiveX Control applications. You can download from http://www.jrsoftware.org
The following is the sample of our ActiveX setup script. It can help you create your installer.
Download Image Viewer CP ActiveX Setup Script
Download Image Viewer CP Pro ActiveX Setup Script
Download Movie Player ActiveX Setup Script
Download Movie Player Pro ActiveX Setup Script
Download VideoEdit Gold ActiveX Setup Script
Download VideoCap ActiveX Setup Script
Download VideoCap Pro ActiveX Setup Script
Download Screen2Video ActiveX Setup Script
Download Screen2Video Pro ActiveX Setup Script
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Image Viewer CP ActiveX Control
Q1: Our company have two developers, How many license do we purchase?
Q2: How do I uninstall an older version?
Q3: Can I use Image Viewer CP ActiveX with Microsoft Access?
Q4: How would I create an instance of a control at run time in VFP?
Q5: What image formats does Image Viewer CP ActiveX support?
Q6: Can you tell me approximately how long I'll have to wait if I send email ask question?
Q7: Can I use Image Viewer CP ActiveX with c# or .Net ?
Q8: How can I unlock the evaluation version?
Q9: How can I convert bitmap file to JPG without display the image?
Q10: How can I print the image to a specific printer without displaying the printer dialog?
Q11: My program is needs to replace that .JPG file every minute and display the new image after it is replaced. My problem is that the OCX has a file lock on the .JPG File, and hence I cannot delete the file and replace it. How can I do?
Q12: Can I display PDF file with Image Viewer CP ActiveX
Q1: Our company have two developers, How many license do we purchase?
A1: You need purchase two license.
Q2: How do I uninstall an older version?
A2: As usual, from the Control Panel. Look at the Add/remove programs applet; find the ImageViewer CP entry and simply click on Remove.
Q3: Can I use Image Viewer CP ActiveX with Microsoft Access?
A3: Yes. It compatible with any programming language that supports ActiveX, including Acces 97, 2000, XP, 2002.
Q4: How would I create an instance of a control at run time in VFP??
PUBLIC oForm
oForm = CREATEOBJECT('form')
oForm.ADDOBJECT('ocx','myocx')
oForm.ocx.Visible=.t.
oForm.ocx.Width=100
oForm.ocx.Height=100
oForm.Show
DEFINE CLASS myocx AS OLECONTROL
oleclass = 'SCRIBBLE.ScribbleCtrl.1'
ENDDEFINE
Q5: What image formats does Image Viewer CP ActiveX support?
A5: ImageViewer CP ActiveX Control supports a variety of video formats including BMP, GIF, ICO, JPEG, JPEG 2000, PCX, PNG, PSD (read only) , TIF, WMF, WBMP, TGA, PGX, RAS, PNM.
Q6: Can you tell me approximately how long I'll have to wait if I send email ask question?
A6: The response time will vary depending on the severity of the issue, however, it should not be longer than the next business day.
Q7: Can I use Image Viewer CP ActiveX with c# or .Net
A7: Yes. It support run on c# or .Net
Q8: How can I unlock the evaluation version?
A8: When you purchase Image Viewer CP ActiveX, you will receive an email with full version download link and license key. You must reinstalled full version setup disk and set the license key in licensekey property. Please see
How can I unlock the evaluation version.
Q9: How can I convert bitmap file to JPG without display the image?
A9: Set the Height and Width property to 1
Example:
ImageViewer1.height=1
ImageViewer1.Width=1
ImageViewer1.filename="c:\test.bmp"
ImageViewer1.Save "c:\test","JPEG"
Q10: How can I print the image to a specific printer without displaying the printer dialog?
A10: Use PrintImage2Printer method can solved it.
Q11: My program is needs to replace that .JPG file every minute and display the new image after it is replaced. My problem is that the OCX has a file lock on the .JPG File, and hence I cannot delete the file and replace it. How can I do?
A11: you can use following code:
ImageViewer1.FileName="c:\test.jpg"
'do something.....
ImageViewer1.FileName="" 'unlock the file.
Q12: Can I display PDF file with Image Viewer CP ActiveX?
A12: No. Image Viewer CP ActiveX does not support input or output PDF file. You should use Image Viewer CP Pro ActiveX Control
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Image Viewer CP Pro ActiveX Control
Q1: What image formats does Image Viewer CP Pro ActiveX support?
Q2: How can I unlock the evaluation version?
Q1: What image formats does Image Viewer CP Pro ActiveX support?
A1: ImageViewer CP Pro ActiveX Control supports a variety of video formats including PDF, BMP, GIF, ICO, JPEG, JPEG 2000, PCX, PNG, PSD (read only) , TIF, WMF, WBMP, TGA, PGX, RAS, PNM.
Q2: How can I unlock the evaluation version?
A2: When you purchase Image Viewer CP Pro ActiveX, you will receive an email with full version download link and license key. You must reinstalled full version setup disk and set the license key in licensekey property. Please see
How can I unlock the evaluation version.
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Movie Player ActiveX Control
Q1:
When I playback divx or xvid video, I cannot adjust the brightness, Contrast, Hue, Invert Color etc?
Q1: When I playback divx or xvid video, I cannot adjust the brightness, Contrast, Hue, Invert Color etc?
A1: You need go to Divx playback configuration and turn off Use advanced hardware overlay.
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Movie Player ProActiveX Control
Q1:
I cannot playback the video, Why?
Q1: I cannot playback the video, Why?
A1: You need confirm hardware acceleration is enabled, Open 'Display Properties' in the Control Panel, Click the 'Settings' tab,Click on the 'Advanced' button at the bottom of the page,
Click on the 'Troubleshooting' tab in the window that appears, Verify that the 'Hardware Acceleration' slider is at the rightmost position.
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MI Thumbnail ActiveX Control
Q1: What kind of image format support on MI Thumbnail ActiveX Control?
Q2: I have a lot of movie files, MI Thumbnail will snapshot the 1 second image, but some movie file 's first image is blank, I want MI Thumbnail ActiveX Control snaphot the 2 seconds image of movie file?
Q3: I cannot run the demo program, why?
Q4: Can I display Movie Duration in Clip?
Q5: How can I change the thumbnail size?
Q1: What kind of image format support on MI Thumbnail ActiveX Control?
A1: MI Thumbnail ActiveX support JPG,BMP,GIF,TIF,PNG,ICO.
Q2: I have a lot of movie files, MI Thumbnail will snapshot the 1 second image, but some movie file 's first image is blank, I want MI Thumbnail ActiveX Control snaphot the 2 seconds image of movie file?
A2: Before load the image, set MIThumbnail1.SnapShotTime =2 , it will snapshot the 2 second of image.
Q3: I cannot run the demo program, why?
A3: You must install DirectX runtime. Except Window XP, it default include directX runtime.
Q4: Can I display Movie Duration in Clip?
A4: Yes. GetClipDuration will return the specific clip duration.
Q5: How can I change the thumbnail size?
A5: Use ClipWidth and ClipHeight property, even you can change the thumbnail size in runtime.
e.g:
MIThumbnail1.ClipWidth=200
MIThumbnail1.ClipHeight=300
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Screen2Video ActiveXControl
Q1: Can I capture screen to WMV9 format?
Q2: What different between Screen2WMV and Screen2Video ActiveX?
Q3: Screen2Video support on win 98?
Q4: When I install Screen2Video.ocx in another computer, why my application does not work?
Q5: Screen2Video can capture sound from microphone?
Q1: Can I capture screen to WMV9 format?
A1: Yes. Screen2Video ActiveX support any available video/audio codec. You must download WMV9 codec.
Q2: What different between Screen2WMV and Screen2Video ActiveX?
A2: The Screen2Video ActiveX control does not need install window media encoder 9 and it support save to any avi format.
Q3: Screen2Video support on win 98?
A3: Yes. but you must install directx runtime and window media format runtime for win98.
Q4: When I install Screen2Video.ocx in another computer, why my application does not work?
A4: You must register the screen2video.ocx and screen2video.dll in another computer. You can type regsvr32 command or use installer register these components.
Q5: Screen2Video can capture sound from microphone?
A5: Yes
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VideoCap ActiveX Control
Q1: When I create setup disk, I need install directX runtime , the directX runtime must download from web site?
Q2: How do I uninstall an older version?
Q3: I have two web cam in my system. Can I create application preview two web cam at the same time?
Q4: When I snapshot photo, I want the resolution of photo same as web cam setting. How can I do?
Q5: Can I capture the avi file using another video codecs?
Q6: Why cannot run the VideoCap sample code?
Q7: Why I install VideoCapFree ActiveX Control, I cannot run the VideoCap ActiveX Control?
Q8: How can I send the image to web after snap shot?
Q9: Can I put the VideoCap ActiveX Control into web page?
Q10: How can I capture video from VCR?
Q11: How can I programmatically control video standard (PAL or NTSC)?
Q12: I cannot use two cameras that are identical.If the two connected cameras are different, use different drivers, then it works perfectly.
Q1: When I create setup disk, I need install directX runtime , the directX runtime must download from web site?
A1: No. You can download DirectX 9.0b end-user redistributable files from here.
Q2: How do I uninstall an older version?
A2: As usual, from the Control Panel. Look at the Add/remove programs applet; find the VideoCap ActiveX Control entry and simply click on Remove.
Q3: I have two web cam in my system. Can I create application preview two web cam on a same time?
A3: Yes. VideoCap ActiveX Control support multiple device selection. You can create two VideoCap instance in your form.
Q4: When I snapshot photo, I want the resolution of photo same as web cam setting, How can I do?
A4: VideoCap ActiveX Control will save the photo according your web cam setting. You does not do anything.
Q5: Can I capture the avi file using another video codecs?
A5: Yes. You can select other video codecs in your system through VideoCap ActiveX Control.
Q6: Why cannot run the VideoCap sample code?
A6: VideoCap ActiveX Control need directx runtime file.download directx runtime first.
Q7: Why I install VideoCapFree ActiveX Control, I cannot run the VideoCap ActiveX Control?
A7: Yes. You can install either VideoCapFree or VideoCap ActiveX Control in your system.
Q8: How can I send the image to web after snap shot?
A8: You can use Microsoft Internet Transfer Control FTP the image to Web Site.
e.g
Inet1.Protocol = icFTP
Inet1.URL = "ftpserver.esmartweb.com" 'your ftp server
Inet1.UserName = "username"
Inet1.Password = "yourpassword"
Inet1.Execute , "put " & "c:\test.bmp" + " test.bmp"
Q9: Can I put the VideoCap ActiveX Control into web page?
A9: Yes. You can find the sample tutorial.
Q10: How can I capture video from VCR?
A10: VideoCap's VideoInput Property support a number of videoinput source(e.g TV Tuner,S-Video,Composite) . Set the videoinput property to Video Composite if the VCR connected to Video Composite.
Q11: How can I programmatically control video standard(PAL or NTSC)?
A11: VideoCap's VideoStandard Property support a number of video standard.
e.g.
VideoCap1.VideoStandard=4 'Set to PAL -B Standard
Q12: I cannot use two cameras that are identical.If the two connected cameras are different, use different drivers, then it works perfectly?
A12: You need changing the FriendlyName in registry.
Well, what you need to do is to search the registry for the camera name that is displayed by VideoCap1.Devices.Name and when you find it change the one that says FriendlyName. Your will come across four results, two for each camera. I find that the second set is what needs to be changed.
Use regedit not regedt32 for search.
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VideoCap Live ActiveX Control
Q1:
Problem with Delay in Live broadcast?
Q1: Problem with delay in Live broadcast?
A1:
Understanding End to End Latency.
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VideoEdit Pro ActiveX Control
Q1:
When I launch Delphi sample, it display license information for Tvideoedit is invalid?
Q2:
The videoedit pro cannot read mpeg2 file, Why?
Q1:When I launch Delphi sample, it display license information for Tvideoedit is invalid?
A1: Select Component - Import ActiveX Control -VideoEdit
Pro ActiveX and press Install button to build the
package and close the project and open again , it
will no problem.
Q2:The videoedit pro cannot read mpeg2 file, Why?
A2: You must installed dvd decoder in your window. download from
http://sourceforge.net/projects/gplmpgdec/
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VideoEdit Mobile ActiveX Control
Q1:
I input 3GP file H.263, AMR Mono file, but failed to converting to another video formats, How can I do?
Q1: I input 3GP file H.263, AMR Mono file, but failed to converting to another video formats?
A1: Because the 3GP file have mono audio, so you need set AudioSample and AudioChannels properties before call InitControl.
VideoEdit1.AudioSample=0
VideoEdit1.AudioChannels=1
VideoEdit1.InitControl
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VideoEdit ActiveX Control
Q1: How do I uninstall an older version?
Q2: When I run demo setup, the installer cannot install successful. How can I do?
Q3: How can I merge a number of mpgs into wmv file?
Q4: I convert mpg file to avi file, I cannot hear the sound when playback, Why?
Q5: How many video codec support on VideoEdit ActiveX Control?
Q6: When I install the application that include videoedit activex control into my client's computer. cannot run, Why?
Q7: VideoEdit ActiveX Control support on VC++, Delphi?
Q8: How can I use transition?
Q9: When I open vb sample, the vb crash?
Q10: After I install videoedit converter application, the videoedit activex control sample cannot run. Why?
Q11: When I create setup disk, it include videoedit activex control, how can I install window media format runtime?
Q12: How can I extract audio from video file and save to wave file?
Q13: How can I detecting WMFDist.exe (Window Media Format runtime) installed on computer?
Q14: How can I playback vob , DVD file?
Q15: When I playback vob , no sound, Why?
Q1: How do I uninstall an older version?
A1: As usual, from the Control Panel. Look at the Add/remove programs applet; find the VideoEdit ActiveX Control entry and simply click on Remove..
Q2: When I run demo setup, the installer cannot install successful. How can I do?
A2: After you downloaded VideoEditDemo.zip. unzip the file.
1. Make sure your computer installed directx runtime and window media format runtime.
2. copy VideoEdit.lic, VideoEdit.ocx,viscomwave.dll, mfc42.dll, msvcrt.dll from Setup Disk file (VideEditDemo Setup file,) into your computer. e.g c:\videoedit
3. type regsvr32 c:\videoedit\videoedit.ocx in run menu in window start menu to register the ocx.
4. type regsvr32 c:\videoedit\viscomwave.dll in run menu in window start menu to register the component.
5. Now you can copy EXAMPLES directory from VideoEditDemo Setup file and open the sample.
Q3: How can I merge a number of mpgs into wmv file?
A3: VideoEdit1.Init
VideoEdit1.AddVideo "c:\test1.mpg", 0, 60,0
VideoEdit1.AddVideo "c:\test2.mpg", 0, 60,0
VideoEdit1.AddVideo "c:\test3.mpg", 0, 60,0
VideoEdit1.OutputWMV=True
VideoEdit1.WMVProfile = 0
VideoEdit1.Save "c:\new.wmv"
Q4: I convert mpg file to avi file, I cannot hear the sound when playback, Why?
A4: You must call AddAudio Method to a audio track.
Q5: How many video codec support on VideoEdit ActiveX Control?
A5: VideoEdit support all video codec installed into your system.
Q6: When I install the application that include videoedit activex control into my client's computer. cannot run, Why?
A6: You must register the videoedit activex control into your client's computer . e.g type regsvr32 command.
Q7: VideoEdit ActiveX Control support on VC++,Delphi?
A7: Yes. The VC++, Delphi Sample include on Demo Setup files.
Q8: How can I use transition?
A8: VideoEdit.Init
VideoEdit.AddVideo "c:\test1.mpg" ,0, 10, 0
VideoEdit.AddTransition 0, 1,3 'start transition start from 1 second to 3 second.
VideoEdit.Preview
if you want have background image/video when transition apply.
VideoEdit.Init
VideoEdit.AddVideo "c:\test1.mpg" ,0, 10, 0
VideoEdit.AddBgVideo "c:\image1.jpg" ,0,10 ,0 'add image to background
VideoEdit.AddTransition 0, 1,3 'start transition start from 1 second to 3 second.
VideoEdit.Preview
Q9: When I open vb sample, the vb crash?
A9: You must install directx runtime and window media format runtime.
Q10: After I install videoedit converter application, the videoedit activex control sample cannot run. Why?
A10: Because the videoedit converter will use videoedit activex control, but license of this control is end user version, not developer. so you must re-install VideoEdit ActiveX Control setup again.
Q11: How can I extract audio from video file and save to wave file?
A11: You can include wmfdist.exe install your installation setup program, For unattended installation with no UI display:
wmfdist.exe /Q:A
For unattended installation with progress bar:
wmfdist.exe.exe /Q
Q12: How can I extract audio from video file and save to wave file?
A12: Save2Wave method can Export wave file from media file and save to specific number of channel, sample rate, bit per sample.
Q13: How can I detecting WMFDist.exe (Window Media Format runtime) installed on computer?
A13: See following link:
Redistributing Windows Media Components
Q14: How can I playback vob, DVD file?
A14: You must installed dvd decoder in your window. download from
http://sourceforge.net/projects/gplmpgdec/
Q15: When I playback vob file, no sound, Why?
A15: Because your vob file encode AC3 codec, so you must installed AC3 decoder, download from
http://ac3filter.sourceforge.net/
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VideoEdit Converter Pro
Q1: I am trying to convert a VOB file to a WMV file for playback on my Pocket PC. When I preview or save the file,
it will crash. Why?
Q2: Why I cannot see Window Media Video 9 codec in Video Compressor?
Q3: I use videoedit converter pro to output SVCD file. I burn this file in CD and playback from home dvd player. The video very slow, Why?
Q4: Can I convert avi,mpeg to WMV?
Q5: Can I convert letter box to full-screen?
Q6: I have 900 Mb movie file, VideoEdit Converter Pro support convert this file?
Q7: When I select convert mpeg file, how can I reduce the waiting time?
Q1: I am trying to convert a VOB file to a WMV file for playback on my Pocket PC. When I preview or save the file,
it will crash. Why?
A1: Because your computer have not DVD decoder
Go to this web site
http://sourceforge.net/projects/gplmpgdec/ , download MPEG2 Video Decoder.
Q2: Why I cannot see Window Media Video 9 codec in Video Compressor?
A2: You need download Windows Media Video9 VCM.
Q3: I use videoedit converter pro to output SVCD file. I burn this file in CD and playback from home dvd player. The video very slow, Why?
A3: You must set Video bit rate =2000 or 2376, Audio bit rate=224.
Q4: Can I convert avi,mpeg to WMV?
A4: Yes.
Q5: Can I convert letter box to full-screen?
A5: Yes. You can select different stretch mode.
Q6: I have 900 Mb movie file, VideoEdit Converter Pro support convert this file?
A6: Yes. VideoEdit Converter Pro can convert any file size media file.
Q7: When I select convert mpeg file, how can I reduce the waiting time?
A7: You can select VBR mode and select smaller quality value, because it will effect the encoding time.
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WMV Profile Editor ActiveX Control
Q1: What is CBR?
Q2: What is VBR?
Q3: What is buffer Window?
Q1: What is CBR?
A1: Constant bit rate encoding is the default method of encoding with wmv file. When using CBR encoding, you specify the target bit rate for a stream, and the codec uses whatever amount of compression is necessary to achieve it.
With CBR encoding the bit rate and size of the encoded stream are known prior to encoding. For example, if you are encoding a three minute song at 32,000 bits per second, you know that the file size will be about 704 kilobytes (32,000 bps x 180 seconds / 8 bits per byte / 1,024). You also know that the bandwidth required to stream the encoded content is about 32,000 bits per second.
Q2: What is VBR?
A2: Variable bit rate (VBR) encoding is an alternative to constant bit rate encoding and is supported by some codecs. Where CBR encoding strives to maintain the bit rate of the encoded media, VBR strives to achieve the best possible quality of the encoded media.
The quality of encoded content is determined by the amount of data that is lost when the content is compressed and decompressed. Many factors affect the loss of data in the compression process, but in general, the more complex the original data and the higher the compression ratio, the more detail is lost in the compression process.
Q3: What is buffer Window?
A3: The buffer window is measured in time and specifies how much content can be buffered. The capacity of the imaginary bucket can be found using the buffer window. For example, if you have a stream with a bit rate of 32 Kbps and a buffer window of 3 seconds, the buffer is sized to hold 3 seconds of 32 Kbps content, or 12,000 bytes (32,000 bits per second x 3 seconds / 8 bits per byte).
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