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Implement len() for FFStream #25

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Implement len() for FFStream #25

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16 changes: 14 additions & 2 deletions ffprobe/ffprobe.py
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Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,18 @@ def __repr__(self):

return template.format(**self.__dict__)

def __len__(self):
"""
Returns the truncated integer duration of the stream (in seconds), if available, defaulting to 0.

Raises a TypeError if called on a stream that is not labelled as video or audio.
"""
if self.is_video() or self.is_audio():
return int(float(self.__dict__.get('duration', '0.0')))

__subclass = f"[{self.__dict__.get('codec_type', None)}]".replace("[]","")
raise TypeError(f"object of type '{self.__class__.__name__}{__subclass}' has no len()")

def is_audio(self):
"""
Is this stream labelled as an audio stream?
Expand Down Expand Up @@ -219,8 +231,8 @@ def frames(self):

def duration_seconds(self):
"""
Returns the runtime duration of the video stream as a floating point number of seconds.
Returns 0.0 if not a video stream.
Returns the runtime duration of the audio/video stream as a floating point number of seconds.
Returns 0.0 if not an audio stream or video stream.
"""
if self.is_video() or self.is_audio():
try:
Expand Down