Use Microsoft Expression encoder to Convert audio into a video with a background image or background music

Microsoft Expression encoder is a part of Microsoft expression. Its main function is to convert and recode media files, such as converting video or audio files into formats supported by the web, you can also Convert audio and video file formats to the formats supported by Microsoft smooth streaming or Silverlight media file formats. Encoder provides the function is very powerful, and very professional, you can go to Microsoft official site to view the introduction and download the use of version, http://www.microsoft.com/download/en/details.aspx? Id = 19652.

For more information about how to convert files in the smooth streaming format in encoder, seeArticleHttp://www.cnblogs.com/jaxu/archive/2010/01/08/1642143.html.

This article describes how to convert audio files to video formats in encoder and add background images or background music during playback.

1. open expression encoder to import an audio file you want to convert. Click the import button below the encoder form. After the audio file is imported, encoder displays the relevant information of the audio file in media content, for example:

2. Select the encode tab on the right of the form and select the output format. Because the imported media file is in the audio format, the video check box is not selected by default. Select video, and then select different Video and Audio Encoding formats as needed. Encoder provides many options for media file conversion, such as file capture clips, size modification, bit rate, frame rate, and so on.

3. Select the location of the output file in the output tab, and click encode at the bottom of the form to start the conversion. The duration of conversion depends on the size of the converted file and the performance of the machine. Generally, the conversion time of dozens of megabytes is about several minutes.

4. Because the audio file is converted to the video format, there is no screen for playing in Windows Media Player after the conversion, that is, the user experience is not good. Encoder allows you to provide an overlay image for a video, that is, an image placed above the video during video playback. You can use this function to add a background image. In the settings window, select the enhance tab, select Add overlay in visual overlay, and select the image you want to add in the displayed dialog box. You can also set the display time range, transparency, size, and position of the image in the video. Here we directly select maintain aspect radio, which means that the aspect ratio of the image is fixed. In this way, when you zoom in or out the video, the image size is automatically adjusted. Similarly, you can add background music in the audio overlay, which is similar to visual overlay.

You can see the green duration at the top of the progress bar and the file name of the visual overlay image you are using. You can select the time range during which the visual overlay image will be displayed. Of course, if the file you want to convert is a video file that contains real video content, you can use this function to add images or advertisements that describe the content. The following figure shows the effect of playback in Windows Media Player after conversion.