/** @brief Build a MLT Renderer
* @param winid The parent widget identifier (required for SDL display). Set to 0 for OpenGL rendering
* @param profile The MLT profile used for the capture (default one will be used if empty). */
/** @brief Build a MLT Renderer
* @param winid The parent widget identifier (required for SDL display). Set to 0 for OpenGL rendering
* @param profile The MLT profile used for the capture (default one will be used if empty). */