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TTXT/TX3G decoder

Register name used to load filter: ttxtdec
This filter may be automatically loaded during graph resolution.

This filter decodes TTXT/TX3G streams into a BIFS scene graph of the compositor filter.
The TTXT documentation is available at

In stand-alone rendering (no associated video), the filter will use:

  • Width and Height properties of input pid if any
  • otherwise, osize option of compositor if set
  • otherwise, txtw and txth


texture (bool, default: false): use texturing for output text
outline (bool, default: false): draw text outline
txtw (uint, default: 400): default width in standalone rendering
txth (uint, default: 200): default height in standalone rendering