mirror of
https://github.com/kuhyx/testsAndMisc.git
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Krzysztof kuhy Rudnicki
c985160d17
Split 16+ files. 27 files still need splitting. See session notes.
116 lines
2.9 KiB
Python
116 lines
2.9 KiB
Python
"""Shared constants and helpers for Q24 object detection visualization."""
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from __future__ import annotations
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import logging
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import os
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from pathlib import Path
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import numpy as np
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os.environ["FFMPEG_BINARY"] = "/usr/bin/ffmpeg"
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from moviepy import (
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ColorClip,
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CompositeVideoClip,
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TextClip,
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VideoClip,
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)
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from moviepy.video.fx import FadeIn, FadeOut
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# ── Constants ─────────────────────────────────────────────────────
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W, H = 1280, 720
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FPS = 24
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STEP_DUR = 7.0
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HEADER_DUR = 4.0
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FONT_B = "/usr/share/fonts/TTF/DejaVuSans-Bold.ttf"
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FONT_R = "/usr/share/fonts/TTF/DejaVuSans.ttf"
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OUTPUT_DIR = Path(__file__).resolve().parent / "videos"
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OUTPUT_DIR.mkdir(parents=True, exist_ok=True)
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OUTPUT = str(OUTPUT_DIR / "q24_object_detection.mp4")
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BG_COLOR = (15, 20, 35)
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_logger = logging.getLogger(__name__)
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# Re-export numpy for sub-modules that need it alongside constants.
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__all__ = [
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"BG_COLOR",
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"FONT_B",
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"FONT_R",
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"FPS",
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"HEADER_DUR",
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"OUTPUT",
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"OUTPUT_DIR",
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"STEP_DUR",
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"H",
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"W",
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"_logger",
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"_make_header",
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"_tc",
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"_text_slide",
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"np",
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]
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def _tc(**kwargs: object) -> TextClip:
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"""TextClip wrapper that adds enough bottom margin to prevent clipping."""
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fs = kwargs.get("font_size", 24)
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m = int(fs) // 3 + 2
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kwargs["margin"] = (0, m)
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return TextClip(**kwargs)
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def _make_header(
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title: str, subtitle: str, duration: float = HEADER_DUR
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) -> CompositeVideoClip:
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"""Create a title/subtitle header slide."""
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bg = ColorClip(size=(W, H), color=BG_COLOR).with_duration(duration)
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t = (
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_tc(
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text=title,
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font_size=48,
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color="white",
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font=FONT_B,
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)
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.with_duration(duration)
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.with_position(("center", 260))
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)
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s = (
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_tc(
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text=subtitle,
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font_size=24,
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color="#90CAF9",
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font=FONT_R,
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)
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.with_duration(duration)
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.with_position(("center", 340))
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)
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return CompositeVideoClip([bg, t, s], size=(W, H)).with_effects(
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[FadeIn(0.5), FadeOut(0.5)]
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)
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def _text_slide(
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lines: list[tuple[str, int, str, str, tuple[str | int, str | int]]],
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duration: float = STEP_DUR,
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) -> CompositeVideoClip:
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"""Create a text-only slide from a list of (text, size, color, font, pos)."""
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bg = ColorClip(size=(W, H), color=BG_COLOR).with_duration(duration)
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clips: list[VideoClip] = [bg]
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for text, font_size, color, font, pos in lines:
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tc = (
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_tc(
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text=text,
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font_size=font_size,
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color=color,
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font=font,
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)
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.with_duration(duration)
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.with_position(pos)
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)
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clips.append(tc)
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return CompositeVideoClip(clips, size=(W, H)).with_effects(
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[FadeIn(0.3), FadeOut(0.3)]
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)
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