RTSP Fully Implemented

media-api/main.py

@@ -243,6 +243,12 @@ def generate_transcoded_stream(file_path: pathlib.Path, start_time: float = 0.0)
     Transcode video to H.264 on-the-fly using FFmpeg.
     Streams H.264/MP4 that browsers can actually play.
     """
+    if not file_path.exists():
+        raise HTTPException(status_code=404, detail="Video file not found")
+    
+    if file_path.stat().st_size == 0:
+        raise HTTPException(status_code=500, detail="Video file is empty (0 bytes)")
+    
     # FFmpeg command to transcode to H.264 with web-optimized settings
     cmd = [
         "ffmpeg",
@@ -272,17 +278,27 @@ def generate_transcoded_stream(file_path: pathlib.Path, start_time: float = 0.0)
         
         # Stream chunks
         chunk_size = 8192
+        bytes_yielded = 0
         while True:
             chunk = process.stdout.read(chunk_size)
             if not chunk:
                 break
+            bytes_yielded += len(chunk)
             yield chunk
         
+        # Check for errors
         process.wait()
+        if process.returncode != 0:
+            stderr = process.stderr.read().decode('utf-8', errors='ignore')
+            print(f"FFmpeg error (code {process.returncode}): {stderr}")
+            if bytes_yielded == 0:
+                raise HTTPException(status_code=500, detail=f"FFmpeg transcoding failed: {stderr[:200]}")
         
+    except HTTPException:
+        raise
     except Exception as e:
         print(f"FFmpeg transcoding error: {e}")
-        raise
+        raise HTTPException(status_code=500, detail=f"Transcoding error: {str(e)}")
 
 
 @app.head("/videos/{file_id:path}/stream-transcoded")