Error with dataloader

[thematrixduo]

I got this error message while running dataloader with 40 workers to load Howto100M dataset. Just wondering if you ever encountered this. if not don't worry, it might be some problem with my setup.

-- Process 0 terminated with the following error:
Traceback (most recent call last):
File "/opt/conda/lib/python3.8/site-packages/torch/multiprocessing/spawn.py", line 19, in _wrap
fn(i, *args)
File "/workspace/pytorch_code/mmssl_graph/train_MILNCE.py", line 207, in main_worker
train(train_loader, model, criterion, optimizer, scheduler, epoch, train_dataset, writer, args)
File "/workspace/pytorch_code/mmssl_graph/train_MILNCE.py", line 225, in train
for i_batch, sample_batch in enumerate(train_loader):
File "/opt/conda/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 435, in next
data = self._next_data()
File "/opt/conda/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 1065, in _next_data
return self._process_data(data)
File "/opt/conda/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 1111, in _process_data
data.reraise()
File "/opt/conda/lib/python3.8/site-packages/torch/_utils.py", line 428, in reraise
raise self.exc_type(msg)
TypeError: init() missing 2 required positional arguments: 'stdout' and 'stderr'

Environment

• PyTorch Version (e.g., 1.0): 1.7.0
• OS (e.g., Linux): Ubuntu 18.04
• How you installed PyTorch (conda, pip, source): pip
• Build command you used (if compiling from source):
• Python version: 3.8
• CUDA/cuDNN version: 11.1
• GPU models and configuration: Tesla V100
• Any other relevant information: Running with Docker container

[antoine77340]

Hi,
This might be due to a decoding error in ffmpeg.
Most people encounter this problem because they either have the wrong video paths or corrupted videos.

[thematrixduo]

Thanks. I identified this video file which causes the error: HowTo100M/qMqUiprqXwU.mp4
Not sure if it is corrupted during downloading though. You might want to give it a check.
--------EDIT--------
I tried to download this video file again. But it still causes the same error. I would suggest you to give it a check.