About video scaling settings

The AppCenter video scaling feature allows you to play clips with different aspect ratios and picture resolutions on the same play channel.

AppCenter handles video scaling as follows:
  • When recording a SD clip, you should specify whether the clip is standard or widescreen video. This sets the clip aspect ratio attribute. This attribute is saved as part of the media file. If the SD clip is played out on a HD channel, the aspect ratio attribute is recognized.
  • SD material that is transferred or recorded into the system, along with its audio and metadata, is upconverted with selected aspect ratio when played on an HD channel. HD material is downconverted along with its audio when played on SD channel. HD and SD clips can be played back-to-back.
  • Agile playout of mixed format clips displays with default or selectable modes such as bars, crop, or stretch on both SD and HD outputs.
  • During play channel setup, you must select the video output for each play channel– standard or high definition. This will determine if the clip picture resolution needs up-conversion or down-conversion.
  • For each play channel you must specify the active format description (AFD) settings to use when the picture image needs to be resized. Selections include crop, bars, halfbars and stretch.
  • There are two settings: Aspect Ratio and Aspect Ratio Conversion. The K2 Summit/Solo system applies these settings as follows:
    • The K2 Summit/Solo system uses the Aspect Ratio setting only when AFD is known and when down-conversion takes place.
    • The K2 Summit/Solo system uses the Aspect Ratio Conversion setting only when AFD is not present or is undefined and either up-conversion or down-conversion takes.
    For example, if you change the Aspect Ratio Conversion setting and then play a clip with AFD present, the output does not change.
  • For the highest video quality, select a video output format that eliminates the need for up or down conversion.
  • AppCenter can play clips with different aspect ratio attributes in a single playlist.
Note: Some video output connectors become inactive for some video type selections. For more information on video output connectors, see the "Configuring the K2 System" section of this Topic Library.

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