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2e6f68f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | #!/usr/bin/env python3
"""Standalone CSV shape and ffprobe helpers for the video converter."""
from __future__ import annotations
import csv
import json
import subprocess
from pathlib import Path
def probe_ts_shape(path: str) -> tuple[int, int]:
with Path(path).open(encoding="utf-8", newline="") as handle:
reader = csv.reader(handle)
header = next(reader)
columns = sum(name.lower() not in {"timestamp", "time", "datetime"} for name in header)
return sum(1 for _ in reader), columns
def probe_video_meta(path: str) -> tuple[int, int, float, int, float]:
result = subprocess.run(
["ffprobe", "-v", "error", "-select_streams", "v:0", "-show_entries",
"stream=width,height,avg_frame_rate,nb_frames,duration:format=duration", "-of", "json", path],
capture_output=True, text=True, timeout=60, check=True,
)
data = json.loads(result.stdout)
stream = data["streams"][0]
numerator, denominator = stream["avg_frame_rate"].split("/")
fps = float(numerator) / float(denominator)
duration = float(stream.get("duration", data.get("format", {}).get("duration", 0)))
frame_count = stream.get("nb_frames", "N/A")
frames = int(frame_count) if frame_count != "N/A" else round(duration * fps)
return int(stream["width"]), int(stream["height"]), fps, frames, duration
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