OpenQuickTime Sound Options Dialog Box (GNU/Linux)

The OpenQuickTime Sound Options dialog box (titled MediaSettings) allows you to configure the audio compression settings when exporting a QuickTime movie on Linux.

On GNU/Linux, Harmony uses the OpenQuickTime framework to export QuickTime movies. This framework uses its own user interfaces to allow you to configure the video and audio compression settings for a movie. Because OpenQuickTime only comes bundled with non-prorprietary codecs, its compression options are limited.
NOTES

  1. From the top menu, select File > Export > Movie.

    The Export Movie dialog box appears.

  1. In the Movie Format drop-down, select QuickTime Movie (*.mov).

  1. Click on the Sound Options button.

  1. In the top menu, select File > Export > OpenGL Frames.

    The Export OpenGL Frames dialog box appears.

  2. In the Format section, select Movie.
  3. In the Movie Format drop-down, select QuickTime Movie (*.mov).

  4. Click on the Sound Options button.

  1. In the Node view, locate your scene's Write node.

  1. Open the Write node's Layer Properties by doing one of the following:

    • Click on the yellow square at the left end of the Write node.

    • Right-click on the Write node, then select Layer Properties.

    The Write node's Layer Properties dialog appears.

  1. In the Write node's Layer Properties, enable the Movie option.

  1. To the right of the Movie check box, open the drop-down menu and select QuickTime Movie (*.mov).

  1. To the right of Sound Options, click Customize.

Parameter Description

codec

Lets you select a codec. By default, the following codecs will be available:

  • A-Law 2:1: This codec uses logarithms to compress audio data. The resulting audio stream requires half the disk space of uncompressed audio data, but is of noticeably lower quality.
  • IMA 4:1: This codec compresses audio data to require a quarter of the disk space required for uncompressed audio data. It is not supported by a lot of software.
  • Twos Complement - Little Endian PCM: A standard uncompressed audio codec.
  • Twos Complement - Big Endian PCM: A legacy standard uncompressed audio codec. This codec may be compatible with older editing interfaces.
  • (mu)-Law 2:1: Similarly to A-Law, this codec uses logarithms to compress audio data. The resulting audio stream requires half the disk space of uncompressed audio data, but is of noticeably lower quality.
NOTE It is recommended to leave this option to its default value, Twos Complement - Little Endian PCM, as it is commonly used for storing uncompressed audio. Other encoding formats are likely to sacrifice audio quality for negligible savings in disk space.
Sample rate

The sample rate at which to export your scene's audio. The only available option is 22050 Hz, as it is the sample rate used internally by Harmony.