How to Add Audio to Video

Written by Ross MacIver

Digital media is everywhere you look. Music and video production have made it torepparttar grass roots level thanks torepparttar 137134 affordability and widespread use of powerful computers. Inexpensive digital video cameras are widely available, and older analog video cameras can be connected to a computer through a video card to download movies torepparttar 137135 computer for editing, storage, and distribution to friends and relatives overrepparttar 137136 internet.

It has become fairly easy to edit your own videos, and there are many software packages available aimed atrepparttar 137137 amateur. The Windows operating system has its own video editing package called Windows Movie Maker that allows you to produce professional-looking videos.

As you explore this exciting new world, you will inevitably come up withrepparttar 137138 need to editrepparttar 137139 audio portion of your video file. The sound quality of most video cameras is not great, so you may want to processrepparttar 137140 sound or replace it all together with music or voice-overs.

It is very easy to separaterepparttar 137141 audio fromrepparttar 137142 video. Free software packages that do this task include Windows Media Encoder from Microsoft (if you are working with WMV video files) and VirtualDub (if you are working with AVI files). Either of these programs (and many others) allow you to saverepparttar 137143 audio portion of video file quickly and easily.

Successful Motor Protection Formulae

Written by Thomas Yoon

As we have discussed before, all overload relays have one major limitation - because they operate on line current, they do not directly senserepparttar motor temperatures.

However, with proper heater selection and careful attention to repparttar 137001 factors that affect heater performance,repparttar 137002 overload relay can work extremely well to protectrepparttar 137003 motors.

Some of these factors that need close attention are:

Motor full load current Motor temperature rise rating Service factor Ambient temperature atrepparttar 137004 motor and atrepparttar 137005 protector Motor locked rotor current ratio Starting time Duty cycle Locked rotor endurance time.

If attention is not given to these factors,repparttar 137006 overload relay will perform poorly. The other factor to be considered is maintenance. Below are some maintenance routines:

Cleaning - The overload relays should be cleaned periodically. Dirt or dust created byrepparttar 137007 operating conditions inrepparttar 137008 plant tends to settle aroundrepparttar 137009 moving parts inrepparttar 137010 device and prevent it from operating properly.

Tightening connections - Because most overload relays make use of current flowing through heater elements to sense overloaded conditions, it is important thatrepparttar 137011 electrical terminals are not loose. Loose electrical connections can create extra heat and cause false tripping ofrepparttar 137012 relays.

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