Video Dimension Translator

This extension provides two so-called "translators" for the video conversion processes

• VideoOrImageDimensionExceptionTranslator - simply throws an exception when you try to download a video in a bigger resolution than is provided by the video file (as the download formats are not filtered based on resolution).
• VideoDimensionCroppingTranslator - calculates how a video needs to be cropped when the aspect ratio of the source- and target-dimensions are different (e.g. 16:9 to 2:3). Note that this removes image material (either top & bottom or left & right, depending on which way you're going). This may be desirable for certain social media formats.

Properties

To be configured in {home}/appserver/conf/custom.properties

videoDimensionTranslator.license

type: String, required: yes, default: -

The license key for the plugin (product: videoDimensionTranslator), provided by brix.

Setup

in {home}/appserver/spring/conversionProcessDefinitions.xml

VideoOrImageDimensionExceptionTranslator

Available for both video and image downloads, use this as the first bean in the processList

<bean class="com.celum.imagine.conversion.processing.definition.ConversionProcessStep">
  <property name="conversionProcessExecutorName" value="variable-modification"/>
  <property name="parameters">
    <set>
      <bean class="com.celum.imagine.conversion.processing.definition.ConversionProcessStepParameter">
        <property name="parameterName" value="TargetVariable"/>
        <property name="parameterValue" value="dimensionExceptionDummy"/>
      </bean>
      <bean class="com.celum.imagine.conversion.processing.definition.ConversionProcessStepParameter">
        <property name="parameterName" value="Expression"/>
        <property name="parameterValue" value="$translator[VideoOrImageDimensionExceptionTranslator:]"/>
      </bean>
    </set>
  </property>
</bean>

VideoDimensionCroppingTranslator

In DownloadVideo, add an option for cropping in the parameterList:

<bean class="com.celum.imagine.conversion.processing.definition.ConversionProcessDefinitionParameter">
    <!-- video cropping -->
    <property name="identifier" value="videoCropping"/>
    <property name="defaultValue" value="keepOriginal"/>
    <property name="description" value="Choose if the video should be cropped to the specified dimensions"/>
    <property name="label" value="Video Cropping"/>
    <property name="allowedValues">
        <list>
            <value>crop</value>
            <value>keepOriginal</value>
        </list>
    </property>
</bean>

Replace the existing parseEmptyVideoSize with this one:

  <bean id="parseEmptyVideoSize" class="com.celum.imagine.conversion.processing.definition.ConversionProcessStep">
    <property name="conversionProcessExecutorName" value="variable-modification"/>
    <property name="parameters">
      <set>
        <bean class="com.celum.imagine.conversion.processing.definition.ConversionProcessStepParameter">
          <property name="parameterName" value="TargetVariable"/>
          <property name="parameterValue" value="ffmpegResizeParameter"/>
        </bean>
        <bean class="com.celum.imagine.conversion.processing.definition.ConversionProcessStepParameter">
          <property name="parameterName" value="Expression"/>
          <property name="parameterValue" value="$translator[VideoDimensionCroppingTranslator:]"/>
        </bean>
      </set>
    </property>
  </bean>

Now you can set a video download format to use "crop" where desired (needs both width and height to be set).

Compatibility Matrix

Release Notes

1.0

Release: 2021-05-26

Initial Version

1.1

Release: 2021-05-28

Added VideoDimensionCroppingTranslator

1.2

Release: 2021-06-19

Include the video downscaling patch when not in crop-mode

1.3

Released: 2021-08-02

Make the ExceptionTranslator available for images as well

(breaking: now called VideoOrImageDimensionExceptionTranslator)

© brix Solutions AG