use pyav read the video data, throw "local variable 'start_end_delta_time' referenced before assignment". A BUG

[StawEndl]

i report some bug,maybe.

Traceback (most recent call last): File "tools/run_net.py", line 60, in <module> main() File "tools/run_net.py", line 41, in main launch_job(cfg=cfg, init_method=args.init_method, func=train) File "/home/mopanzhong/rope_detection/SlowFast-main/slowfast/utils/misc.py", line 312, in launch_job func(cfg=cfg) File "/home/mopanzhong/rope_detection/SlowFast-main/tools/train_net.py", line 708, in train train_epoch( File "/home/mopanzhong/rope_detection/SlowFast-main/tools/train_net.py", line 86, in train_epoch for cur_iter, (inputs, labels, index, time, meta) in enumerate(train_loader): File "/home/mopanzhong/.local/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 521, in __next__ data = self._next_data() File "/home/mopanzhong/.local/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 1203, in _next_data return self._process_data(data) File "/home/mopanzhong/.local/lib/python3.8/site-packages/torch/utils/data/dataloader.py", line 1229, in _process_data data.reraise() File "/home/mopanzhong/.local/lib/python3.8/site-packages/torch/_utils.py", line 434, in reraise raise exception UnboundLocalError: Caught UnboundLocalError in DataLoader worker process 0. Original Traceback (most recent call last): File "/home/mopanzhong/.local/lib/python3.8/site-packages/torch/utils/data/_utils/worker.py", line 287, in _worker_loop data = fetcher.fetch(index) File "/home/mopanzhong/.local/lib/python3.8/site-packages/torch/utils/data/_utils/fetch.py", line 49, in fetch data = [self.dataset[idx] for idx in possibly_batched_index] File "/home/mopanzhong/.local/lib/python3.8/site-packages/torch/utils/data/_utils/fetch.py", line 49, in <listcomp> data = [self.dataset[idx] for idx in possibly_batched_index] File "/home/mopanzhong/rope_detection/SlowFast-main/slowfast/datasets/kinetics.py", line 344, in __getitem__ frames, time_idx, tdiff = decoder.decode( File "/home/mopanzhong/rope_detection/SlowFast-main/slowfast/datasets/decoder.py", line 627, in decode return frames_out, start_end_delta_time, time_diff_aug UnboundLocalError: local variable 'start_end_delta_time' referenced before assignment

i use the pyav_decode functiopn to read the video, but this function return the decode_all_video which is False. When decode_all_video is False, the start_end_delta_time is not created.

if you fix this bug, please tell me.

[haooooooqi]

Thanks for playing with PySF!
Seems you have modified the code, I don't see start_end_delta_time at line 627