World Conquest Chronicles

World Conquest Chronicles

Auto-lesson, v1.1

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Utility for a generation of video lessons from separate phrases as frames.

Generate speeches from phrases via Google Text-To-Speech API and combine them with a video track.

Change Log

  • phrases:
    • support a language specification (ISO 639-1 language code) for each phrase (see below for details);
  • audio:
    • generate speeches from phrases via Google Text-To-Speech API (in MP3 format);
    • generate a sound track from speeches (in MP3 format);
    • support a specification of an additionally gap between speeches;
  • video:
    • combine video and sound tracks (in AVI format with Xvid (MPEG-4) codec);
    • set a duration of each frame equal to a corresponding speech;
    • support a specification of an additionally gap between frames.

Features

  • phrases:
    • read of phrases from stdin;
    • support single-line and multiline phrases (each phrase is separated from another by a double newline);
    • support a language specification (ISO 639-1 language code) for each phrase (see below for details);
  • frames:
    • generate frames from phrases (in PNG format);
    • support only a plain background;
    • align a phrase on a center of a frame;
    • split a phrase to lines for to fit it into a frame (support a specification of a frame padding);
    • frame settings:
      • background:
        • width;
        • height;
        • padding;
        • color;
      • text:
        • font (it supports only TrueType fonts);
        • size;
        • color;
  • audio:
    • generate speeches from phrases via Google Text-To-Speech API (in MP3 format);
    • generate a sound track from speeches (in MP3 format);
    • support a specification of an additionally gap between speeches;
  • video:
    • generate a video from frames and a sound track (in AVI format with Xvid (MPEG-4) codec);
    • set a duration of each frame equal to a corresponding speech;
    • support a specification of an additionally gap between frames;
    • output a generated video to a specified file.

Phrases Format

Grammar in an EBNF:

phrase list = phrase, {PHRASE SEPARATOR, phrase};
phrase = language specification, paragraph;
language specification = LANGUAGE CODE, ":";
paragraph = ANY TEXT - PHRASE SEPARATOR;

PHRASE SEPARATOR = ? /(\r\n|\n\r|\n|\r){2}/ ?;
LANGUAGE CODE = ? /en|ru|.../i ?; (* see ISO 639-1 *)
ANY TEXT = ? /.+/s ?;

Example:

EN: Beauty lies in lover's eyes.

RU: Красота — в глазах любящего.

Screenshots