Clarify effective pixel aspect ratio value #193
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Included errata against REC Clarified the meaning of 'green' Fixed examples 4 and 10 Clarified rendering semantics of smpte:backgroundImage
nigelmegitt
approved these changes
Jan 12, 2017
| <p class='note'> | ||
| The <code>ittp:aspectRatio</code> parameter effectively defines the display aspect ratio (DAR) of the root container, while | ||
| the <code>tts:extent</code> style property on the root element effectively defines the storage aspect ratio (SAR) of the root container. | ||
| As a result, when both <code>tts:extent</code> and <code>ittp:aspectRatio</code> are specified on the <code>tt</code> element, the effective pixel aspect ratio (PAR) of the root container is equal to the ratio of the DAR to the SAR. |
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Looks good, on the understanding that ttp:pixelAspectRatio is prohibited.
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Closes #184