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Make sure item is instance of slice in __getitem__

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Davide Depau 2017-12-21 15:55:36 +01:00
parent 3f671218a6
commit c2c6a864d2
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1 changed files with 1 additions and 1 deletions
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ffmpeg/nodes.py
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@ -49,7 +49,7 @@ class Stream(object):
Please note that this can only be used to select a substream that already exist. If you want to split
the stream, use the `split` filter.
"""
if item.start != None:
if not isinstance(item, slice) or item.start is not None:
raise ValueError("Invalid syntax. Use 'stream[:\"something\"]', not 'stream[\"something\"]'.")
return self.node.stream(select=item.stop)