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FFmpegPostProcessor: decode stderr first and then get the last line (closes #837)
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@ -85,8 +85,9 @@ class FFmpegPostProcessor(PostProcessor):
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout,stderr = p.communicate()
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if p.returncode != 0:
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stderr = stderr.decode('utf-8', 'replace')
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msg = stderr.strip().split('\n')[-1]
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raise FFmpegPostProcessorError(msg.decode('utf-8', 'replace'))
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raise FFmpegPostProcessorError(msg)
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def _ffmpeg_filename_argument(self, fn):
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# ffmpeg broke --, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details
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