Auto-lesson, v1.3

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

Support a watermark in a frame, the slow mode of Google Text-To-Speech API and a language specification for all even and odd phrases simultaneously.

Change Log

• phrases:
  • support a language specification for all even and odd phrases simultaneously;
  • make an individual language specification optional;
• frames:
  • support a watermark in a frame (optional):
    • watermark settings:
      • text;
      • font (it always uses the text font);
      • size;
      • color;
• audio:
  • support the slow mode of Google Text-To-Speech API:
    • support a separately specification of a speed mode for even and odd phrases;
• fix bugs:
  • last frame hasn't any duration.

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; can be disabled);
    • for all even and odd phrases simultaneously;
• 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);
  • support a watermark in a frame (optional);
  • frame settings:
    • background:
      • width;
      • height;
      • padding;
      • color;
    • text:
      • font (it supports only TrueType fonts);
      • size;
      • color;
    • watermark:
      • text;
      • font (it always uses the text font);
      • 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;
  • support the slow mode of Google Text-To-Speech API:
    • support a separately specification of a speed mode for even and odd phrases;
• 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 (optionally);
  • upload a generated video to YouTube (optionally):
    • separate mode for an authorization in YouTube API;
    • YouTube video settings:
      • title;
      • description;
      • tags;
      • YouTube category;
    • retry upload a video on errors:
      • retrying settings:
        • maximal number of tries;
        • delay between tries.

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:

Beauty lies in lover's eyes.

RU: Красота — в глазах любящего.

Screenshots

Begin of a generation