Update app to only look at first minute of video to speed up video processing

app.py

@@ -35,7 +35,7 @@ def find_frames(url, model, desc, top_k, text):
     height = int(video_stream['height'])
     out, _ = (
         ffmpeg
-        .input(url, t=120)
+        .input(url, t=60)
         .output('pipe:', format='rawvideo', pix_fmt='rgb24')
         .run(capture_stdout=True)
     )