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61 lines
1.8 KiB
61 lines
1.8 KiB
6 years ago
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# -*- coding: utf-8 -*-
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# Copyright 2018 Mike Fährmann
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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"""Convert pixiv ugoira to webm"""
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from .common import PostProcessor
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import subprocess
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import tempfile
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import zipfile
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class UgoiraPP(PostProcessor):
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def __init__(self, pathfmt, options):
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PostProcessor.__init__(self)
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def run(self, pathfmt):
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if pathfmt.keywords["extension"] != "txt":
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return
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framelist = []
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# get frames and their durations
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with pathfmt.open("r") as file:
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for line in file:
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name, _, duration = line.partition(" ")
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framelist.append((name, int(duration.rstrip())))
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# list the last frame twice to prevent it from only being
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# displayed for a very short time
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framelist.append((name, int(duration.rstrip())))
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with tempfile.TemporaryDirectory() as tempdir:
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# extract frames
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pathfmt.set_extension("zip")
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with zipfile.ZipFile(pathfmt.realpath) as zfile:
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zfile.extractall(tempdir)
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# write ffconcat file
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ffconcat = tempdir + "/ffconcat.txt"
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with open(ffconcat, "w") as file:
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file.write("ffconcat version 1.0\n")
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for name, duration in framelist:
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file.write("file '{}'\n".format(name))
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file.write("duration {}\n".format(duration / 1000))
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# invoke ffmpeg
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pathfmt.set_extension("webm")
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args = ["ffmpeg", "-i", ffconcat, pathfmt.realpath]
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subprocess.Popen(args).wait()
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# mark framelist file for deletion
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pathfmt.delete = True
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__postprocessor__ = UgoiraPP
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