mirror of
https://github.com/Findus23/BBBtoVideo.git
synced 2024-09-18 12:53:45 +02:00
81 lines
2.3 KiB
Python
81 lines
2.3 KiB
Python
import subprocess
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from pathlib import Path
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from typing import Optional
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import cv2
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import numpy as np
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from config import fps, pointer_size, start, end
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from cursor import Cursor
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from download import fetch_file
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from metadata import Metadata
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from shapes import Shapes
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metadata = Metadata(fetch_file("metadata.xml"))
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print(f'found "{metadata.meetingName}"')
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print(f"starting on {metadata.starttime}")
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cursor = Cursor(fetch_file("cursor.xml"))
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shapes = Shapes(fetch_file("shapes.svg"))
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for slide in shapes.slides:
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a = slide.file # pre-download slide images
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audio = fetch_file("video/webcams.webm", show_progress=True)
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print("start generating video")
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if start is None:
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time = 0
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else:
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time = start
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if end is None:
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end = metadata.duration
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print(end)
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frame_len = 1 / fps
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slide_id = -1
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video_file = Path("without_audio.mp4")
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fourcc = cv2.VideoWriter_fourcc(*'MP4V')
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print(shapes.maxwidth, shapes.maxheight)
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out = cv2.VideoWriter(str(video_file), fourcc, fps, (shapes.maxwidth, shapes.maxheight))
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slide = shapes.slides[0]
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image: Optional[np.ndarray] = None
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print()
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while time <= end:
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frame = np.zeros((shapes.maxheight, shapes.maxwidth, 3))
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while time > slide.end or image is None:
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slide_id += 1
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slide = shapes.slides[slide_id]
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image: np.ndarray = cv2.imread(str(slide.file))
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frame[0:slide.height, 0:slide.width] = image
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x_frac = cursor.xspline(time)
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y_frac = cursor.yspline(time)
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if not (np.isnan(x_frac) or np.isnan(y_frac)):
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cursor_x = int(round(x_frac * slide.width))
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cursor_y = int(round(y_frac * slide.height))
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if -pointer_size <= cursor_x <= slide.width + pointer_size and -pointer_size <= cursor_y <= slide.height + pointer_size:
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frame[cursor_y - pointer_size:cursor_y + pointer_size,
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cursor_x - pointer_size:cursor_x + pointer_size] = np.array([0, 0, 255], dtype=np.uint8)
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else:
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cursor_x = None
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cursor_y = None
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print(f"{time:.2f}/{end:.2f} {slide_id} {cursor_x} {cursor_y} ", end="\r", flush=True)
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out.write(frame.astype(np.uint8))
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time += frame_len
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out.release()
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print()
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command = [
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"ffmpeg", "-i", str(video_file), "-ss", str(start), "-to", str(end), "-i", str(audio), "-ss", str(0), "-c",
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"copy",
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"output.mp4",
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"-y"
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]
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print("merge video with audio")
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print(" ".join(command))
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subprocess.run(command)
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