74 lines
1.6 KiB
Python
Executable File
74 lines
1.6 KiB
Python
Executable File
#!/usr/bin/python
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import os
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import time
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import sys
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import json
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import mlt
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from PyQt5 import QtWidgets
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# Avoid segfault in webvfx
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app = QtWidgets.QApplication(sys.argv)
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#mlt.mlt_log_set_level(40) # verbose
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mlt.Factory.init()
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tractor = mlt.Tractor()
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tractor.mark_in = -1
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tractor.mark_out = -1
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multitrack = tractor.multitrack()
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source = sys.argv[1]
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target = source.replace('.json', '.audio.xml')
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with open(source) as fd:
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data = json.load(fd)
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music = mlt.Playlist()
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vocals = mlt.Playlist()
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fps = 60
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profile = mlt.Profile("atsc_1080p_%d" % fps)
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def add_clip(playlist, file_, duration):
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in_ = 0
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if not isinstance(file_, str):
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file_ = file_.encode('utf-8')
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clip = mlt.Producer(profile, file_)
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clip.set_in_and_out(in_, in_+duration-1)
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playlist.append(clip)
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def add_blank(playlist, length):
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playlist.blank(length)
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for clip in data['music']:
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frames = int(clip['duration'] * fps)
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if clip.get('blank'):
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add_blank(music, frames)
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else:
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add_clip(music, clip['path'], frames)
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for clip in data['vocals']:
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frames = int(clip['duration'] * fps)
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if clip.get('blank'):
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add_blank(vocals, frames)
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else:
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add_clip(vocals, clip['path'], frames)
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multitrack.connect(vocals, 0)
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multitrack.connect(music, 1)
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composite = mlt.Transition(profile, "mix")
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composite.set("start", 0.01)
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composite.set("end", 0.01)
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composite.set("combine", 1)
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tractor.plant_transition(composite)
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consumer = 'xml'
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consumer = mlt.Consumer(profile, consumer, target)
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consumer.connect(tractor)
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#consumer.set("real_time", -2)
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consumer.start()
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