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This commit is contained in:
Karl Kroening 2018-05-09 01:26:28 -05:00
parent 1e63419a93
commit c162eab2a9
2 changed files with 13 additions and 6 deletions
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17
ffmpeg/nodes.py
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@ -49,12 +49,11 @@ class Stream(object):
Select a component (audio, video) of the stream. Select a component (audio, video) of the stream.
Example: Example:
Process the audio and video portions of a stream independently:: Process the audio and video portions of a stream independently::
input = ffmpeg.input('in.mp4') input = ffmpeg.input('in.mp4')
audio = input['a'].filter_("aecho", 0.8, 0.9, 1000, 0.3) audio = input[:'a'].filter_("aecho", 0.8, 0.9, 1000, 0.3)
video = input['v'].hflip() video = input[:'v'].hflip()
out = ffmpeg.output(audio, video, 'out.mp4') out = ffmpeg.output(audio, video, 'out.mp4')
""" """
if self.selector is not None: if self.selector is not None:
@ -134,8 +133,16 @@ class Node(KwargReprNode):
def __getitem__(self, item): def __getitem__(self, item):
"""Create an outgoing stream originating from this node; syntactic sugar for ``self.stream(label)``. """Create an outgoing stream originating from this node; syntactic sugar for ``self.stream(label)``.
It can also be used to apply a selector: e.g. ``node[0:'audio']`` returns a stream with label 0 and It can also be used to apply a selector: e.g. ``node[0:'a']`` returns a stream with label 0 and
selector ``'audio'``, which is the same as ``node.stream(label=0, selector='audio')``. selector ``'a'``, which is the same as ``node.stream(label=0, selector='a')``.
Example:
Process the audio and video portions of a stream independently::
input = ffmpeg.input('in.mp4')
audio = input[:'a'].filter_("aecho", 0.8, 0.9, 1000, 0.3)
video = input[:'v'].hflip()
out = ffmpeg.output(audio, video, 'out.mp4')
""" """
if isinstance(item, slice): if isinstance(item, slice):
return self.stream(label=item.start, selector=item.stop) return self.stream(label=item.start, selector=item.stop)

2
ffmpeg/tests/test_ffmpeg.py
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@ -175,7 +175,7 @@ def test_filter_with_selector():
] ]
def test_filter_with_bad_selectors(): def test_get_item_with_bad_selectors():
input = ffmpeg.input(TEST_INPUT_FILE1) input = ffmpeg.input(TEST_INPUT_FILE1)
with pytest.raises(ValueError) as excinfo: with pytest.raises(ValueError) as excinfo: