403 lines
14 KiB
Python
403 lines
14 KiB
Python
#!/usr/bin/python3
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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 shutil
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from pathlib import Path
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import ox
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from .pi import random
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from .render_kdenlive import KDEnliveProject, _CACHE
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def random_choice(seq, items, pop=False):
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n = n_ = len(items) - 1
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#print('len', n)
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if n == 0:
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if pop:
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return items.pop(n)
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return items[n]
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r = seq()
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base = 10
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while n > 10:
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n /= 10
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#print(r)
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r += seq()
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base += 10
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r = int(n_ * r / base)
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#print('result', r, items)
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if pop:
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return items.pop(r)
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return items[r]
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def chance(seq, chance):
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return (seq() / 10) >= chance
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def get_clip_by_seqid(clips, seqid):
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selected = None
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for i, clip in enumerate(clips):
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if clip['seqid'] == seqid:
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selected = i
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break
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if selected is not None:
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return clips.pop(i)
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return None
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def compose(clips, target=150, base=1024, voice_over=None):
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length = 0
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scene = {
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'front': {
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'V1': [],
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'V2': [],
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},
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'back': {
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'V1': [],
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'V2': [],
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},
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'audio': {
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'A1': [],
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'A2': [],
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'A3': [],
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'A4': [],
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}
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}
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all_clips = clips.copy()
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seq = random(base)
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voice_overs = []
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if voice_over:
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vo_keys = list(voice_over)
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if chance(seq, 0.5):
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voice_overs.append(voice_over[vo_keys[chance(seq, len(vo_keys))]])
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elif len(vo_keys) >= 2:
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vo1 = vo_keys.pop(chance(seq, len(vo_keys)))
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vo2 = vo_keys.pop(chance(seq, len(vo_keys)))
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voice_overs.append(voice_over[vo1])
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if voice_over[vo1]["duration"] + voice_over[vo2]["duration"] < target:
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print("adding second vo")
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voice_overs.append(voice_over[vo2])
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vo_min = sum([vo['duration'] for vo in voice_overs])
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if vo_min > target:
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target = vo_min
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elif vo_min < target:
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offset = (target - vo_min) / 2
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scene['audio']['A3'].append({
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'blank': True,
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'duration': offset
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})
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vo_min += offset
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for vo in voice_overs:
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scene['audio']['A3'].append(vo)
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clip = None
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while target - length > 0 and clips:
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# coin flip which site is visible (50% chance)
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if length:
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remaining = target - length
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remaining = remaining * 1.05 # allow for max of 10% over time
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clips = [c for c in clips if c['duration'] <= remaining]
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if not clips:
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break
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if clip:
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if chance(seq, 0.5):
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next_seqid = clip['seqid'] + 1
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clip = get_clip_by_seqid(clips, next_seqid)
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else:
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clip = None
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if not clip:
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clip = random_choice(seq, clips, True)
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if not clips:
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clips = [c for c in all_clips if c != clip]
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if not clips:
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clips = all_clips.copy()
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if length + clip['duration'] > target and length >= vo_min:
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break
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print('%06.3f %06.3f' % (length, clip['duration']), os.path.basename(clip['original']))
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length += clip['duration']
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if "foreground" not in clip and "animation" in clip:
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fg = clip['animation']
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transparancy = 1
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else:
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fg = clip['foreground']
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if 'foreground2' in clip:
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if 'foreground3' in clip:
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n = seq()
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if n <= 3: # 0,1,2,3
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clip['foreground']
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elif n <= 6: # 4,5,6
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clip['foreground2']
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else: # 7,8,9
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clip['foreground3']
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elif chance(seq, 0.5):
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fg = clip['foreground2']
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transparancy = seq() / 10
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if 'foley' in clip:
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foley = clip['foley']
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else:
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foley = fg
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scene['front']['V2'].append({
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'duration': clip['duration'],
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'src': fg,
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"filter": {
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'transparency': transparancy,
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}
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})
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transparency = seq() / 10
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# coin flip which site is visible (50% chance)
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if chance(seq, 0.5):
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transparency_front = transparency
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transparency_back = 0
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else:
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transparency_back = transparency
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transparency_front = 0
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#transparency_original = seq() / 10
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transparency_original = 1
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if "background" in clip:
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scene['front']['V1'].append({
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'duration': clip['duration'],
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'src': clip['background'],
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"filter": {
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'transparency': transparency_front
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}
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})
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scene['back']['V2'].append({
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'duration': clip['duration'],
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'src': clip['background'],
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"filter": {
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'transparency': transparency_back
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}
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})
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else:
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scene['front']['V1'].append({
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'duration': clip['duration'],
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'src': clip['animation'],
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"filter": {
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'transparency': 0,
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}
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})
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scene['back']['V2'].append({
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'duration': clip['duration'],
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'src': clip['original'],
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"filter": {
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'transparency': 0,
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}
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})
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scene['back']['V1'].append({
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'duration': clip['duration'],
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'src': clip['original'],
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"filter": {
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'transparency': transparency_original,
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}
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})
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# 50 % chance to blur original from 0 to 30
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if chance(seq, 0.5):
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blur = seq() * 3
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if blur:
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scene['back']['V1'][-1]['filter']['blur'] = blur
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scene['audio']['A1'].append({
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'duration': clip['duration'],
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'src': clip['original'],
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})
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# TBD: Foley
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scene['audio']['A2'].append({
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'duration': clip['duration'],
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'src': foley,
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})
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print("scene duration %0.3f (target: %0.3f, vo_min: %0.3f)" % (length, target, vo_min))
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return scene
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def get_scene_duration(scene):
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duration = 0
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for key, value in scene.items():
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for name, clips in value.items():
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for clip in clips:
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duration += clip['duration']
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return duration
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def render(root, scene, prefix=''):
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fps = 24
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files = []
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for timeline, data in scene.items():
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#print(timeline)
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project = KDEnliveProject(root)
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tracks = []
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for track, clips in data.items():
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#print(track)
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for clip in clips:
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project.append_clip(track, clip)
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path = os.path.join(root, prefix + "%s.kdenlive" % timeline)
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with open(path, 'w') as fd:
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fd.write(project.to_xml())
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files.append(path)
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if timeline == "audio":
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duration = project.get_duration()
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for track, clips in data.items():
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project = KDEnliveProject(root)
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for clip in clips:
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project.append_clip(track, clip)
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track_duration = project.get_duration()
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delta = duration - track_duration
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if delta > 0:
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project.append_clip(track, {'blank': True, "duration": delta/24})
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path = os.path.join(root, prefix + "%s-%s.kdenlive" % (timeline, track))
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with open(path, 'w') as fd:
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fd.write(project.to_xml())
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files.append(path)
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return files
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def get_fragments(clips, voice_over):
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import itemlist.models
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import item.models
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from collections import defaultdict
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fragments = []
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for l in itemlist.models.List.objects.filter(status='featured').order_by('name'):
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if l.name.split(' ')[0].isdigit():
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fragment = {
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'name': l.name,
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'tags': [t['value'] for t in l.query['conditions'][1]['conditions']],
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'description': l.description
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}
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fragment["id"] = int(fragment['name'].split(' ')[0])
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fragment['clips'] = []
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for clip in clips:
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if set(clip['tags']) & set(fragment['tags']):
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fragment['clips'].append(clip)
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fragment["voice_over"] = voice_over.get(str(fragment["id"]), {})
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fragments.append(fragment)
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fragments.sort(key=lambda f: ox.sort_string(f['name']))
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return fragments
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def render_all(options):
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prefix = options['prefix']
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duration = int(options['duration'])
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base = int(options['offset'])
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_cache = os.path.join(prefix, "cache.json")
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if os.path.exists(_cache):
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with open(_cache) as fd:
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_CACHE.update(json.load(fd))
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with open(os.path.join(prefix, "clips.json")) as fd:
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clips = json.load(fd)
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with open(os.path.join(prefix, "voice_over.json")) as fd:
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voice_over = json.load(fd)
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fragments = get_fragments(clips, voice_over)
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with open(os.path.join(prefix, "fragments.json"), "w") as fd:
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json.dump(fragments, fd, indent=2, ensure_ascii=False)
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position = target_position = 0
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target = fragment_target = duration / len(fragments)
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base_prefix = os.path.join(prefix, 'render', str(base))
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for fragment in fragments:
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fragment_id = int(fragment['name'].split(' ')[0])
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name = fragment['name'].replace(' ', '_')
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if fragment_id < 10:
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name = '0' + name
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if not fragment['clips']:
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print("skipping empty fragment", name)
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continue
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fragment_prefix = os.path.join(base_prefix, name)
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os.makedirs(fragment_prefix, exist_ok=True)
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scene = compose(fragment['clips'], target=target, base=base, voice_over=fragment['voice_over'])
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scene_duration = get_scene_duration(scene)
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print("%s %6.3f -> %6.3f (%6.3f)" % (name, target, scene_duration, fragment_target))
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position += scene_duration
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target_position += fragment_target
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if position > target_position:
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target = fragment_target - (position-target_position)
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print("adjusting target duration for next fragment: %6.3f -> %6.3f" % (fragment_target, target))
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elif position < target_position:
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target = target + 0.1 * fragment_target
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timelines = render(prefix, scene, fragment_prefix[len(prefix) + 1:] + '/')
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with open(os.path.join(fragment_prefix, 'scene.json'), 'w') as fd:
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json.dump(scene, fd, indent=2, ensure_ascii=False)
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if not options['no_video']:
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for timeline in timelines:
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print(timeline)
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ext = '.mp4'
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if '/audio' in timeline:
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ext = '.wav'
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cmd = [
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'xvfb-run', '-a',
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'melt', timeline,
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'-quiet',
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'-consumer', 'avformat:%s' % timeline.replace('.kdenlive', ext),
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]
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if ext == '.wav':
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cmd += ['vn=1']
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else:
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cmd += ['an=1', 'vcodec=libx264', 'x264opts=keyint=1', 'crf=15']
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subprocess.call(cmd)
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if ext == '.wav' and timeline.endswith('audio.kdenlive'):
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cmd = [
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'ffmpeg', '-y',
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'-nostats', '-loglevel', 'error',
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'-i',
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timeline.replace('.kdenlive', ext),
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timeline.replace('.kdenlive', '.mp4')
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]
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subprocess.call(cmd)
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os.unlink(timeline.replace('.kdenlive', ext))
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fragment_prefix = Path(fragment_prefix)
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cmds = []
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for src, out1, out2 in (
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("audio-A1.wav", "fl.wav", "fr.wav"),
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("audio-A2.wav", "fc.wav", "lfe.wav"),
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("audio-A3.wav", "bl.wav", "br.wav"),
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):
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cmds.append([
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"ffmpeg", "-y",
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"-nostats", "-loglevel", "error",
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"-i", fragment_prefix / src,
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"-filter_complex",
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"[0:0]pan=1|c0=c0[left]; [0:0]pan=1|c0=c1[right]",
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"-map", "[left]", fragment_prefix / out1,
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"-map", "[right]", fragment_prefix / out2,
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])
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cmds.append([
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"ffmpeg", "-y",
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"-nostats", "-loglevel", "error",
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"-i", fragment_prefix / "fl.wav",
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"-i", fragment_prefix / "fr.wav",
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"-i", fragment_prefix / "fc.wav",
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"-i", fragment_prefix / "lfe.wav",
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"-i", fragment_prefix / "bl.wav",
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"-i", fragment_prefix / "br.wav",
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"-filter_complex", "[0:a][1:a][2:a][3:a][4:a][5:a]amerge=inputs=6[a]",
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"-map", "[a]", "-c:a", "aac", fragment_prefix / "audio-5.1.mp4"
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])
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cmds.append([
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"ffmpeg", "-y",
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"-nostats", "-loglevel", "error",
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"-i", fragment_prefix / "back.mp4",
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"-i", fragment_prefix / "audio-5.1.mp4",
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"-c", "copy",
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fragment_prefix / "back-5.1.mp4",
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])
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for cmd in cmds:
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#print(" ".join([str(x) for x in cmd]))
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subprocess.call(cmd)
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shutil.move(fragment_prefix / "back-5.1.mp4", fragment_prefix / "back.mp4")
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for fn in (
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"audio-5.1.mp4", "fl.wav", "fr.wav", "fc.wav", "lfe.wav", "bl.wav", "br.wav",
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):
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fn = fragment_prefix / fn
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if os.path.exists(fn):
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os.unlink(fn)
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print("Duration - Target: %s Actual: %s" % (target_position, position))
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with open(_cache, "w") as fd:
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json.dump(_CACHE, fd)
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