283 lines
7.5 KiB
Python
Executable file
283 lines
7.5 KiB
Python
Executable file
#!/usr/bin/python
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from argparse import ArgumentParser
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import json
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import os
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import subprocess
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import sys
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import time
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import ox
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import mlt
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from PyQt5 import QtWidgets
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usage = "usage: %(prog)s [options] json"
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parser = ArgumentParser(usage=usage)
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parser.add_argument('-p', '--prefix', dest='prefix', help='version prefix', default='.')
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parser.add_argument('files', metavar='path', type=str, nargs='*', help='json source file')
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opts = parser.parse_args()
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if 'performance' in opts.prefix:
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version = 'performance'
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else:
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version = 'main'
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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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def add_color(playlist, color, duration):
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red = mlt.Producer(profile, 'color:' + color)
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red.set_in_and_out(0, duration)
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playlist.append(red)
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def add_clip(playlist, clip, in_, duration):
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file_ = clip['path']
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if not isinstance(file_, str):
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file_ = file_.encode('utf-8')
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info = ox.avinfo(file_)
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tractor = mlt.Tractor(profile)
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tracks = tractor.multitrack()
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video = mlt.Playlist()
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c = mlt.Producer(profile, file_)
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c.set_in_and_out(in_, in_+duration-1)
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video.append(c)
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tracks.connect(video, 0)
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if not info.get('audio'):
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audio = mlt.Playlist()
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add_silence(audio, duration)
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tracks.connect(audio, 1)
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else:
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volume = mlt.Filter(profile, "volume")
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if clip.get('tag', '') == 'gong':
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volume.set("gain", '0.8')
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# Vocal Cords in Action
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elif clip.get('id', '').split('/')[0] in ('EBB', 'ECE', 'ECK', 'ECJ') and \
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clip.get('tag', '') in ('vagina', 'voice'):
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volume.set("gain", '0.4')
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else:
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volume.set("gain", '0.12')
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tractor.plant_filter(volume)
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playlist.append(tractor)
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def add_audio_clip(playlist, file_, duration, 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_silence(playlist, length):
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file_ = 'silence.wav'
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add_audio_clip(playlist, file_, length)
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def add_blank(playlist, length):
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playlist.blank(length)
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def add_text(playlist, value, length):
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if not isinstance(value, str):
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value = value.encode('utf-8')
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text = mlt.Producer(profile, 'webvfx:text.html')
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text.set('transparent', 1)
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text.set('title', value)
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text.set('length', length)
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playlist.append(text)
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def mix_audio_tracks(a, b, ratio, combine=False):
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tractor = mlt.Tractor(profile)
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audio = tractor.multitrack()
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audio.connect(a, 0)
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audio.connect(b, 1)
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mix = mlt.Transition(profile, "mix")
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mix.set("start", ratio)
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mix.set("end", ratio)
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#mix.set("always_active", 1)
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if combine:
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mix.set("combine", 1)
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tractor.plant_transition(mix)
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return tractor
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def save_xml(track, filename):
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consumer = mlt.Consumer(profile, 'xml', filename)
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consumer.connect(track)
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consumer.start()
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# main
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fps = 60
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profile = mlt.Profile("atsc_1080p_%d" % fps)
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#profile.set_explicit(1)
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source = opts.files[0]
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target = source.replace('.json', '.xml')
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target_audio = source.replace('.json', '.audio.xml')
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target_audio_wav = target_audio + '.wav'
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target_vocals = source.replace('.json', '.vocals.xml')
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target_music = source.replace('.json', '.music.xml')
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target_drones = source.replace('.json', '.drones.xml')
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target_source = source.replace('.json', '.source.xml')
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gongs_wav = source.replace('.json', '.gongs.wav')
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with open(source) as fd:
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data = json.load(fd)
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video = mlt.Playlist()
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overlay = mlt.Playlist()
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music = mlt.Playlist()
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vocals = mlt.Playlist()
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drones0 = mlt.Playlist()
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drones1 = mlt.Playlist()
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gongs = mlt.Playlist()
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# hide Set to 1 to hide the video (make it an audio-only track),
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# 2 to hide the audio (make it a video-only track),
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# or 3 to hide audio and video (hidden track).
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drones0.set("hide", 1)
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drones1.set("hide", 1)
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gongs.set("hide", 1)
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vocals.set("hide", 1)
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music.set("hide", 1)
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for clip in data['clips']:
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frames = int(clip['duration'] * fps)
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if not frames:
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continue
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if clip.get('black'):
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add_color(video, 'black', frames)
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else:
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#print(clip['duration'], clip['path'])
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if not os.path.exists(clip['path']):
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print(clip['path'], 'is missing')
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sys.exit(1)
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# fixme seconds to fps!
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in_ = int(clip['in'] * fps)
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add_clip(video, clip, in_, frames)
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add_color(video, 'black', 60)
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for clip in data['text']:
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frames = int(clip['duration'] * fps)
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if not frames:
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continue
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if clip.get('blank'):
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add_blank(overlay, frames)
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else:
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add_text(overlay, clip['text'], frames)
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for clip in data['music']:
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frames = int(clip['duration'] * fps)
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if not frames:
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continue
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if clip.get('blank'):
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add_silence(music, frames)
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else:
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add_audio_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 not frames:
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continue
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if clip.get('blank'):
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add_silence(vocals, frames)
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else:
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add_audio_clip(vocals, clip['path'], frames)
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for name, plist in (
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('drones0', drones0),
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('drones1', drones1),
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):
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for clip in data[name]:
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frames = int(clip['duration'] * fps)
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if clip.get('blank'):
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add_silence(plist, frames)
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else:
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add_audio_clip(plist, clip['path'], frames)
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duration = sum(clip['duration'] for clip in data['clips'])
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save_xml(vocals, target_vocals)
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video.set("hide", 1)
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save_xml(video, target_source)
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video.set("hide", 0)
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# mix drones
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drones = mix_audio_tracks(drones0, drones1, 0.5)
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save_xml(drones, target_drones)
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save_xml(music, target_music)
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if version == 'performance':
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# render gongs
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render_gongs = not os.path.exists(gongs_wav)
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if not render_gongs:
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render_gongs = os.path.getmtime(source) > os.path.getmtime(gongs_wav)
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if render_gongs:
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subprocess.call([
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# offset in pi, duration, number of tracks, target
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'./render_gongs.py',
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str(data['gongs']['offset']),
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str(duration),
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str(data['gongs']['tracks']),
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gongs_wav
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])
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# load gongs
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add_audio_clip(gongs, gongs_wav, int(duration * fps), int(5*fps))
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# mix gongs + music
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mtractor = mix_audio_tracks(gongs, music, 0.15)
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else:
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# mix drones + music
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mtractor = mix_audio_tracks(drones, music, 0.3)
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norm = mlt.Filter(profile, "volume")
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# lower volume
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if version == 'performance':
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norm.set("gain", "-6dB")
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else:
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norm.set("gain", "-12dB")
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mtractor.plant_filter(norm)
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# background and vocals
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# vocals are on extra track now
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#atractor = mix_audio_tracks(vocals, mtractor, 0.4)
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atractor = mtractor
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save_xml(atractor, target_audio)
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'''
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'''
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subprocess.call([
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'qmelt', target_audio, '-consumer', 'avformat:' + target_audio_wav,
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])
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audiomix = mlt.Playlist()
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add_audio_clip(audiomix, target_audio_wav, int(duration * fps))
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# mix video + audio
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#tractor = mix_audio_tracks(atractor, video, 0.29)
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# with vocals to background 0.4 -> 0.29
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# with vocals as extra track 0.725
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#tractor = mix_audio_tracks(audiomix, video, 0.5)
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tractor = mix_audio_tracks(audiomix, video, 0.6)
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output = mlt.Tractor(profile)
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output_tracks = output.multitrack()
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output_tracks.connect(tractor, 0)
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output_tracks.connect(overlay, 1)
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norm = mlt.Filter(profile, "volume")
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#norm.set("gain", "-6dB")
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norm.set("gain", "6dB")
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output.plant_filter(norm)
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composite = mlt.Transition(profile, "composite")
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#composite.set('fill', 1)
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output.plant_transition(composite)
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save_xml(output, target)
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