Update presets for faster

app/routers/videos.py

@@ -172,10 +172,11 @@ async def stream_video(video_id: str, current_user: dict = Depends(is_user)):
             '-movflags', 'frag_keyframe+empty_moov',
             '-f', 'mp4',
             '-codec:v', 'libx264',
-            '-preset', 'veryfast',
+            '-preset', 'ultrafast',
             '-crf', '28',
             '-codec:a', 'aac',
             '-b:a', '128k',
+            '-vf', '"scale=iw/2:ih/2"',
             '-loglevel', 'warning',
             '-hide_banner',
             'pipe:1'