add finders

bot/transcode.py

@@ -0,0 +1,46 @@
+import asyncio
+from pathlib import Path
+import shutil
+import subprocess
+
+FFMPEG_BIN = shutil.which("ffmpeg") or "ffmpeg"
+
+async def transcode_to_mobile_mp4(src: Path) -> Path:
+    """
+    Перекодировать видео в MP4, совместимый с мобильными клиентами Telegram:
+    - H.264 (libx264), профиль main
+    - pix_fmt yuv420p
+    - movflags +faststart
+    - AAC 128k
+    Возвращает путь к новому файлу (.tg.mp4).
+    """
+    if not src.exists():
+        raise FileNotFoundError(f"Source file not found: {src}")
+
+    dst = src.with_suffix(".tg.mp4")
+    cmd = [
+        FFMPEG_BIN,
+        "-y",
+        "-i", str(src),
+        "-c:v", "libx264",
+        "-preset", "veryfast",
+        "-crf", "23",
+        "-profile:v", "main",
+        "-pix_fmt", "yuv420p",
+        "-movflags", "+faststart",
+        "-c:a", "aac",
+        "-b:a", "128k",
+        str(dst),
+    ]
+
+    def _run():
+        proc = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        if proc.returncode != 0:
+            raise RuntimeError(f"ffmpeg failed: {proc.stderr.decode('utf-8', errors='ignore')}")
+
+    loop = asyncio.get_running_loop()
+    await loop.run_in_executor(None, _run)
+
+    if not dst.exists():
+        raise RuntimeError("Transcode failed: output file not created")
+    return dst