NVIDIA / NVIDIA/DALI

Code hang when dealing with a .avi video

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#3,312 2 comments 0 reactions 1 assignee View on GitHub

@awolant is already working on this.

Since Sep 3, 2021.

enhancement Video
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C++
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Description

Hi,

We are encountering a problem when processing a .avi video.
Could you please help us?

We have uploaded the video to google drive: https://drive.google.com/file/d/10W1T9nkW1oxxQmdV0cURBgpOD5e5nT6y/view?usp=sharing.

Code:

from nvidia.dali import pipeline_def
import nvidia.dali.fn as fn

@pipeline_def
def video_pipe(filenames):
    videos = fn.readers.video(device="gpu", filenames=filenames,
                              sequence_length=sequence_length, shard_id=0, num_shards=1)
    return videos

if __name__ == '__main__':
    batch_size = 1
    sequence_length = 8
    video_files = [
        './IamLegendII_eat_h_nm_np1_le_goo_8.avi']
    n_iter = 6

    pipe = video_pipe(batch_size=batch_size, num_threads=2,
                      device_id=0, filenames=video_files, seed=123456)
    pipe.build()

    for i in range(n_iter):
        pipe_out = pipe.run() # code will hang in this line
        sequences_out = pipe_out[0].as_cpu().as_array()
        print(sequences_out.shape)

This code hanged in pipe_out = pipe.run().
The python=3.8, cuda=10.1, and dali=1.5.0. We also tried cuda=11.1 and the problem still remains.

We are looking forward to your help and appreciate your hard work!

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