add precreated output array

app.py

@@ -122,6 +122,7 @@ def inference_step(vid, start_sec, duration, out_fps, interpolate):
 
 def predict_fn(filepath, start_sec, duration, out_fps, interpolate):
     # out_fps=12
+    gc.collect()
     vid = EncodedVideo.from_path(filepath)
     for i in range(duration):
         video, audio, fps, audio_fps = inference_step(
@@ -133,10 +134,13 @@ def predict_fn(filepath, start_sec, duration, out_fps, interpolate):
         )
         gc.collect()
         if i == 0:
-            video_all = video
+            #video_all = video
+            video_all = np.zeros((duration*out_fps, *video.shape[1:])).astype('uint8')
+            video_all[i*out_fps:(i+1)*out_fps,...] = video.astype('uint8')
             audio_all = audio
         else:
-            video_all = np.concatenate((video_all, video))
+            #video_all = np.concatenate((video_all, video))
+            video_all[i*out_fps:(i+1)*out_fps,...] = video.astype('uint8')
             audio_all = np.hstack((audio_all, audio))
 
     write_video(