def build_side_by_side()

in scripts/generate_video_side_by_side_standalone.py [0:0]

• 83 lines of code
• 4 McCabe index (conditional complexity)

def build_side_by_side(base_video, new_video, base_ind, new_ind, output_dir, filename):
    before_vid = pathlib.Path(output_dir, "before.mp4")
    after_vid = pathlib.Path(output_dir, "after.mp4")
    before_cut_vid = pathlib.Path(output_dir, "before-cut.mp4")
    after_cut_vid = pathlib.Path(output_dir, "after-cut.mp4")
    before_rs_vid = pathlib.Path(output_dir, "before-rs.mp4")
    after_rs_vid = pathlib.Path(output_dir, "after-rs.mp4")

    for apath in (
        before_vid,
        after_vid,
        before_cut_vid,
        after_cut_vid,
        before_rs_vid,
        after_rs_vid,
    ):
        if apath.exists():
            apath.unlink()

    overlay_text = (
        "fps=fps=60,drawtext=text={}\\\\ :fontsize=(h/30):fontcolor=black:y=10:"
        + "timecode=00\\\\:00\\\\:00\\\\:00:rate=60*1000/1001:fontcolor=white:x=(w-tw)/2:"
        + "y=10:box=1:boxcolor=0x00000000@1[vid]"
    )
    common_options = [
        "-map",
        "[vid]",
        "-c:v",
        "libx264",
        "-crf",
        "18",
        "-preset",
        "veryfast",
    ]

    # Cut the videos
    subprocess.check_output(
        ["ffmpeg", "-i", str(base_video), "-vf", "select=gt(n\\,%s)" % base_ind]
        + [str(before_cut_vid)]
    )
    subprocess.check_output(
        ["ffmpeg", "-i", str(new_video), "-vf", "select=gt(n\\,%s)" % new_ind]
        + [str(after_cut_vid)]
    )

    # Resample
    subprocess.check_output(
        ["ffmpeg", "-i", str(before_cut_vid), "-filter:v", "fps=fps=60"]
        + [str(before_rs_vid)]
    )
    subprocess.check_output(
        ["ffmpeg", "-i", str(after_cut_vid), "-filter:v", "fps=fps=60"]
        + [str(after_rs_vid)]
    )

    # Generate the before and after videos
    subprocess.check_output(
        [
            "ffmpeg",
            "-i",
            str(before_rs_vid),
            "-filter_complex",
            overlay_text.format("firefox"),
        ]
        + common_options
        + [str(before_vid)]
    )
    subprocess.check_output(
        [
            "ffmpeg",
            "-i",
            str(after_rs_vid),
            "-filter_complex",
            overlay_text.format("chrome"),
        ]
        + common_options
        + [str(after_vid)]
    )

    subprocess.check_output(
        [
            "ffmpeg",
            "-i",
            str(before_vid),
            "-i",
            str(after_vid),
            "-filter_complex",
            "[0:v]pad=iw*2:ih[int];[int][1:v]overlay=W/2:0[vid]",
        ]
        + common_options
        + [str(pathlib.Path(output_dir, filename))]
    )