[SOLUTIONS] Insights for setting up

[gycka]

I was setting this up in the end of August, 2019. Here are some findings that you need to do/change to make this work:

• scipy.misc.imsave() has been deprecated (in SciPy 1.0.0), instead, use import imageio and imageio.imwrite()
• cv2.createOptFlow_DualTVL1() did not work with opencv 4.X.X (pip install opencv-python). If installed this way, remove it (pip uninstall opencv-python) and install its different version (pip install opencv-contrib-python). Next, change cv2.createOptFlow_DualTVL1() to dtvl1=cv2.optflow.DualTVL1OpticalFlow_create()
• I had problems with the skvideo.io.vread() function. I had both ffmpeg/ffprobe installed using pip, but that did not work. I had success with conda install -c mrinaljain17 ffmpeg, but you can also install it from source.
• As I had a different dataset setup than the author (I simply extracted UCF101 dataset, so my paths looked like this: ../../UCF-101/ApplyEyeMakeup/v_ApplyEyeMakeup_g01_c01.avi, which I believe is the norm). Due to this, I had to remove the second argument for os.path.join() function found right after the main function and args = ... For example, the first line became data_root=os.path.join(args.data_root)
• If you are not parsing any arguments, change the default value for data_root. For example, parser.add_argument('--data_root',default='../../Downloads/UCF-101',type=str)

Hope this helps. Thank you for the scripts.

[sanolans]

Hi! I followed your solution but I'm getting the following error: NameError: name 'videos_root' is not defined. Did you encounter this error and how did you resolve it if you did?

Error details:
`runfile('D:/Clones/py-denseflow-master/denseflow1.py', wdir='D:/Clones/py-denseflow-master')
find 13320 videos.
get videos list done!
Traceback (most recent call last):

File "", line 1, in
runfile('D:/Clones/py-denseflow-master/denseflow1.py', wdir='D:/Clones/py-denseflow-master')

File "C:\Users\sancy\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 827, in runfile
execfile(filename, namespace)

File "C:\Users\sancy\Anaconda3\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 110, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

File "D:/Clones/py-denseflow-master/denseflow1.py", line 184, in
pool.map(dense_flow,zip(video_list,flows_dirs,[step]*len(video_list),[bound]*len(video_list)))

File "C:\Users\sancy\Anaconda3\lib\multiprocessing\pool.py", line 290, in map
return self._map_async(func, iterable, mapstar, chunksize).get()

File "C:\Users\sancy\Anaconda3\lib\multiprocessing\pool.py", line 683, in get
raise self._value

NameError: name 'videos_root' is not defined`

[g2-bernotas]

@sanolans it seems that you somehow have deleted (?) videos_root variable. If you check the original code on this repository (denseflow.py) line 163 you will see that variable. I slightly modified it due to my set up, so it simply became:

args=parse_args()
data_root=os.path.join(args.data_root)
videos_root=os.path.join(data_root)

If you need further help, please provide your main code (denseflow.py -> if name=='main'.

[sanolans]

Thanks for replying, its working now. However it stop after processing a number of videos, so I have to restart it.

[Malithi-gif]

Can anyone help me?