probe.py

import json
import subprocess
from pathlib import Path

def ffprobe_json(path: Path) -> dict:
    cmd = [
        "ffprobe", "-v", "error",
        "-print_format", "json",
        "-show_format", "-show_streams",
        str(path)
    ]
    p = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
    if p.returncode != 0:
        return {"error": p.stderr[-1600:]}
    try:
        return json.loads(p.stdout)
    except Exception:
        return {"error": "Failed to parse ffprobe output."}