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Encoding Video for Wi-Fi and EDGE

Because users may be connected to the Internet using either Wi-Fi or EDGE, you need to provide alternate media for these different connection speeds. You can use QuickTime Pro, the QuickTime API, or any Apple applications that provide iPhone exporters to encode your video for Wi-Fi and EDGE. This section contains specific instructions for QuickTime Pro 7.2.1, QuickTime Pro 7.2, and QuickTime Pro 7.1.6.

In this section:

Using QuickTime Pro 7.2.1
Using QuickTime Pro 7.2
Using QuickTime Pro 7.1.6

Using QuickTime Pro 7.2.1

Follow these steps to export video using QuickTime Pro 7.2.1:

1. Open your movie using QuickTime Player Pro.

2. Choose File > Export for Web.

   A dialog appears.

3. Enter the file name prefix, location of your export, and set of versions to export as shown in Figure 8-1.

   
   

   Figure 8-1  Export movie panel

   

4. Click Export.

   QuickTime Player Pro saves these versions of your QuickTime movie, along with a reference movie, poster image, and ReadMe.html file to the specified location. See the ReadMe.html file for instructions on embedding the generated movie in your webpage, including sample HTML.

Using QuickTime Pro 7.2

You use the following QuickTime Pro 7.2 exporters to prepare video content for iPhone:

• Movie to iPhone prepares movies for display over Wi-Fi.

• Movie to iPhone (Cellular) prepares movies for display over EDGE.

Follow these steps to export video for iPhone using QuickTime Pro 7.2:

1. Launch QuickTime Player Pro.

2. Choose File > Export.

   A dialog appears.

3. Enter the filename and location of your export as shown in Figure 8-2.

   
   

   Figure 8-2  Save exported file as dialog

   

4. Choose Movie to iPhone from the Export pop-up menu as shown in Figure 8-3.

   
   

   Figure 8-3  Export menu items

   

5. Click Save to export the movie for display over Wi-Fi.

6. Repeat steps 2 through 5 except this time choose Movie to iPhone (Cellular) from the Export pop-up menu to export the movie for display over EDGE.

   Save the EDGE encoded file to the same folder but use a different filename—for example, MyMovie-cell.3pg.

7. Use these files to create a reference movie as described in “Creating a Reference Movie”

Using QuickTime Pro 7.1.6

For QuickTime Pro 7.1.6 and earlier, use these exporters and settings:

• The Movie to MPEG-4 exporter with the following settings prepares movies for Wi-Fi:

  • In the H.264 video options, make sure you restrict the encoder to use the Baseline profile, and select "Faster encode (Single-pass)" encoding in the Video Options dialog.

  • Video settings: 900 kbit/sec, H.264, 480 x 360; frame rate: current; preserve aspect ratio using: Fit within size

  • Audio settings: 128 kbit, AAC-LC

  • .mp4 file

• The Movie to 3G exporter with the following settings prepares movies for EDGE:

  • Video settings: 64 kbit, H.264, 176 x 144; frame rate: 10 or 15; preserve aspect ratio using: Letterbox or Crop

  • Audio settings: 16 kbit, AAC-LC

  • .3gp file

Follow the instructions in “Creating a Reference Movie” to create a reference movie using these exported files.

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