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Table of Contents
Troubleshooting Audio and Video
We have provided an ActiveX Control (the Microsoft® NetShow Player) so that you can view and hear multimedia documentation. To pause a multimedia video, tour, or demonstration in progress, click on the player. To restart, click again.
If you cannot hear multimedia pieces at all
- Verify that the volume is not turned all the way down, and that the mute option is not selected.
- Verify that you have a sound card installed. Consult your computer’s documentation to see if your computer came with a sound card installed. You may also need speakers or headphones to hear audio.
- If you do not have a sound card installed, review your computer’s documentation, or contact your computer’s manufacturer for a list of compatible sound cards.
- If you do have a sound card installed, verify that the audio driver is installed. To do this, double-click the Multimedia icon in Control Panel. After the Multimedia Properties dialog box appears, click the Devices tab, then double-click the Audio Devices node. If no driver is listed under Audio Devices, then you do not have an audio driver installed. Contact your computer manufacturer, computer documentation, or sound card manufacturer for the correct and most current audio driver for your particular sound card.
- If you do have an audio driver installed, verify that it is the most current version. Contact the sound card manufacturer or the manufacturer’s Web site for the latest information on your particular sound card.
If multimedia pieces have poor sound quality
- Open Sound Recorder (click Start, point to Programs, point to Accessories, point to Multimedia, and select Sound Recorder).
- In the File menu of Sound Recorder, click Open, navigate to the Winnt\Media or Windows\Media folder (depending on your operating system), and select the file named The Microsoft Sound.wav. Click the Open button to open the file.
- Play the sound. If the audio quality is acceptable, proceed to the next step. If not, verify that your sound device is correctly installed.
- On the File menu of Sound Recorder, select Save As.
- In the Save As dialog box, click Change. The Sound Selection dialog box appears.
- In the Format list, click MPEG Layer-3.
- In the Attributes list, click 18 kBit/s, 11,025 Hz, Mono 2 kb/sec.
- Click OK.
- In the Save As dialog box, type test.wav in the File name box, then click Save. You are saving a compressed version of the file.
- In Sound Recorder, open Test.wav, the compressed file you saved in the previous step.
- Play the compressed file. If sound quality is poor, verify that you have the correct and most current audio driver installed for your particular sound card. To find out more information on your sound card, contact the computer manufacturer (if you purchased your computer with a sound card pre-installed), the sound card manufacturer, the sound card documentation, or the sound card manufacturer’s Web site.
If multimedia pieces stop and start unexpectedly
- Start the multimedia piece with which you are having difficulty.
- Right-click the NetShow player.
- Click Properties.
- In the Microsoft NetShow Player Properties dialog box, click the Advanced tab.
- In the Buffering section, Click the Buffer seconds of data button. Increase the value in the box to 30, 40, 50, or 60.
Note The greater the buffering value, the longer you will have to wait for the video to start.
- Click the Apply button.
- Click the OK button.
- Click Refresh to restart the multimedia piece.
Note Microsoft NetShow uses standard Windows compression codecs (compression/decompression software). If you have poorly implemented or incorrect sound card drivers installed, you may observe the following:
- Sounds that use these standard codecs may perform poorly.
- Some files play correctly despite bad or mismatched drivers (for example, you have a sound card based on the ESS chipset, which has Soundblaster functionality, and you are using SoundBlaster drivers rather than the ESS AudioDrive drivers), but others will not. This problem is not unique to NetShow, the same issues apply to virtually any multimedia program that uses Windows sound codecs and compressed audio files.
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