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Commit f0fbadb

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auneriauneri
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Force frame rate of FFMpegFileWriter input
The output video file was observed to skip frames, when input frame rate does not match output (e.g., when fps=1, or interval=1000). See https://www.ffmpeg.org/ffmpeg.html#Description for a description of the solution.
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‎lib/matplotlib/animation.py

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+1-1Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -446,7 +446,7 @@ class FFMpegFileWriter(FileMovieWriter, FFMpegBase):
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def _args(self):
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# Returns the command line parameters for subprocess to use
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# ffmpeg to create a movie using a collection of temp images
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return [self.bin_path(), '-i', self._base_temp_name(),
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return [self.bin_path(), '-r', str(self.fps), '-i', self._base_temp_name(),
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'-vframes', str(self._frame_counter),
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'-r', str(self.fps)] + self.output_args
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