About the mpeg-4 encoder pane – Apple Compressor 2 User Manual

Page 154

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154

Chapter 11

Creating MPEG-4 Output Files

 Hinting for streaming: Hinting refers to how a video stream is divided into streamable

pieces. To create streaming video, the streaming server needs some hints about what
data to send out and when. These hints consist of defining a maximum packet size
and maximum packet duration. A hint track contains information needed to stream
your output file. A hint track is created for every streamable media track in the
output file (video and audio), and the streaming server uses the hint track to turn the
media into real-time streams.

About the MPEG-4 Encoder Pane

The MPEG-4 Part 2 Encoder pane allows you to select a variety of streaming types
and options.

The MPEG-4 Part 2 pane contains the following items:

 File Extension field: Displays the MPEG-4 Part 2 file extension mp4 as soon as the

MPEG-4 output format is selected from the File Format pop-up menu, or the ( + )
pop-up menu in the Settings tab of the Presets window.

 Video, Audio, and Streaming buttons: These buttons open the Video, Audio, and

Streaming panes, described next.

 Allow Job segmenting: This checkbox allows you to turn off job segmenting. It is only

relevant if you are using Compressor with distributed processing and with two pass
or multi-pass encoding. (The Compressor 2 distributed processing feature is limited
to computers that have either Final Cut Studio or DVD Studio Pro 4 installed.) Since
the MPEG-4 Part 2 format uses single pass VBR, you can leave this box checked in all
cases for added speed gains with distributed processing. For more information, see
“

Job Segmenting and Two Pass VBR

” on page 136.

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