Tracs validation added. A warning is thrown if the input contains a video strem, but the requested output format doesn't support it

web/backend/api/info.py

@@ -0,0 +1,35 @@
+"""Endpoint to retrieve stream information for an uploaded file."""
+
+from fastapi import APIRouter, HTTPException
+
+from backend.config import settings
+from backend.services.file_manager import FileManager
+from backend.services.task_manager import task_manager
+from backend.ffmpeg import get_stream_info
+
+router = APIRouter(prefix="/api", tags=["info"])
+
+
+@router.get("/info/{task_id}")
+async def get_task_info(task_id: str):
+    """
+    Return stream information (has_audio, has_video, has_subtitle) for the uploaded file.
+    """
+    if not task_manager.has_task(task_id):
+        raise HTTPException(status_code=404, detail=f"Task {task_id} not found")
+
+    input_path = FileManager.get_input_path(task_id)
+    if not input_path or not input_path.exists():
+        raise HTTPException(status_code=404, detail="Input file not found")
+
+    try:
+        info = get_stream_info(str(input_path))
+        return {
+            "task_id": task_id,
+            "has_audio": info["has_audio"],
+            "has_video": info["has_video"],
+            "has_subtitle": info["has_subtitle"],
+            "audio_codec": info["audio_codec"],
+        }
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Failed to retrieve stream info: {str(e)}")