7.2

Chapter 4 Exporting Files with QuickTime Pro 51
3G File Format Export Options
After you choose File > Export and click Options, the first two items in the File Format
pop-up menu are the standard formats.
 3GPP is for GSM networks. With this format, you can use:
 MPEG-4, H.263, or H.264 video
 AAC or AMR audio
 3G timed text
 3GPP2 is for CDMA 2000 networks. With this format, you can use:
 MPEG-4, H.263, or H.264 video
 AAC, AMR, or QCELP audio
 3G timed text
 Movie fragments (enables playback to start sooner for longer movies, since only
the fragment, not the whole movie, must fit on the handset)
The remaining formats are provided for specific networks. With these formats, you can
restrict distribution so that a file can’t be shared from the recipient’s phone (set this
option in the Advanced pane). These formats may limit the acceptable file size or data
rate; check with the service provider for more information.
 3GPP (Mobile MP4) is for NTT DoCoMo’s i-motion 3G service. With this format, you
can use the 3GPP options described above.
 3GPP2 (EZmovie) is for KDDI’s 3G network service. This format provides the same
options as 3GPP2 (described above), except for AMR audio support.
 AMC (EZmovie) is for KDDI subscribers with AMC-capable phones. With this format,
you can use:
 MPEG-4 video
 QCELP audio
 KDDI’s text format
3G Video Export Options
 Video Format: If your source movie has only one video track and it is already
compressed, you can choose “Pass through” (so that the video doesn’t get
compressed again).
 Data Rate: The more kilobits per second (kbps), the better the movie quality. For
best playback, however, don’t choose a data rate higher than the available
bandwidth.
 Optimized for: If you choose H.264 from the Video Format pop-up menu, choose
your intended delivery method from the “Optimized for” pop-up menu. This setting
tells the codec how much the data rate can vary above and below the data rate you
choose.