Traceback (most recent call last):


 "/usr/local/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 2065, in post_process

files_to_delete, info = pp.run(info)


 "/usr/local/lib/python2.7/dist-packages/youtube_dl/postprocessor/ffmpeg.py", line 512, in run

self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args)


 "/usr/local/lib/python2.7/dist-packages/youtube_dl/postprocessor/ffmpeg.py", line 235, in run_ffmpeg_multiple_files

raise FFmpegPostProcessorError(msg)
FFmpegPostProcessorError: Conversion failed!

Traceback (most recent call last):


 "train.py", line 347, in <module>

cli_main()


 "train.py", line 343, in cli_main

main(args)


 "train.py", line 82, in main

train(args, trainer, task, epoch_itr)


 "train.py", line 112, in train

shuffle=False,


 "/data/houwei/fairseq/fairseq/data/iterators.py", line 182, in next_epoch_itr

self.dataset.set_epoch(self.epoch)


 "/data/houwei/fairseq/fairseq/data/nested_dictionary_dataset.py", line 116, in set_epoch

ds.set_epoch(epoch)


 "/data/houwei/fairseq/fairseq/data/base_wrapper_dataset.py", line 51, in set_epoch

self.dataset.set_epoch(epoch)


 "/data/houwei/fairseq/fairseq/data/base_wrapper_dataset.py", line 51, in set_epoch

self.dataset.set_epoch(epoch)
AttributeError: 'MMapIndexedDataset' object has no attribute 'set_epoch'
