Gluoncv TSN tuto: ucf101.py not working

1

Hi,

I’m trying to do this tuto https://gluon-cv.mxnet.io/build/examples_action_recognition/dive_deep_ucf101.html because the dataset can’t be downloaded by gluoncv.data (unsure if this is expected or an error), I’m using this tuto to prepare it https://gluon-cv.mxnet.io/build/examples_datasets/ucf101.html#sphx-glr-build-examples-datasets-ucf101-py - yet this doesn’t work either:

python ucf101.py returns
Traceback (most recent call last):
File “ucf101.py”, line 357, in
download_ucf101(args)
File “ucf101.py”, line 345, in download_ucf101
rf.extractall(path=target_dir)
File “/home/ec2-user/anaconda3/envs/JupyterSystemEnv/lib/python3.6/site-packages/rarfile.py”, line 820, in extractall
self._extract(fnlist, path, pwd)
File “/home/ec2-user/anaconda3/envs/JupyterSystemEnv/lib/python3.6/site-packages/rarfile.py”, line 887, in _extract
check_returncode(p, output)
File “/home/ec2-user/anaconda3/envs/JupyterSystemEnv/lib/python3.6/site-packages/rarfile.py”, line 2868, in check_returncode
raise exc(msg)
rarfile.RarWriteError: Write error [5]: b’Write error in the file /home/ec2-user/.mxnet/datasets/ucf101/UCF-101/PlayingSitar/v_PlayingSitar_g23_c01.avi\nInappropriate ioctl for device’

hardware is EC2 P3.2xl machine
unrar was installed with

wget https://www.rarlab.com/rar/rarlinux-x64-5.5.0.tar.gz
tar -zxvf rarlinux-x64-5.5.0.tar.gz
cd rar
sudo cp -v rar unrar /usr/local/bin/

because the snippet provided doesn’t work in the linux of the SageMaker EC2s

2

I tried to reproduce the problem but for me the script is running fine. I installed the tools via the package manager:

sudo apt-get install unrar
pip install rafile
3

nice good to know! how did you sudo apt-get install unrar ? on some flavors of linux on EC2 (eg the one in SageMaker EC2s) this is not recognized. Which machine do you use?

4

I tried it out on Ubuntu DLAMI. You are right that on SageMaker this does not work. Can you try to install a different version of rarlinux?