mlt generation
This commit is contained in:
j
commit
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generate mtl timeline for clips from a pan.do/ra instance
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run generate.py to create a temorary json playlist.
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and use timeline.py to convert it into a kdenlive project
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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import json
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import ox
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import os
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api = ox.API('https://0xdb.org/api/')
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config = json.load(open(os.path.expanduser('~/.ox/client.json')))
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api.signin(username=config['username'], password=config['password'])
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def get_files(item):
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files = api.findFiles({
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"keys": [
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"selected",
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#"path",
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"part",
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"language",
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"type",
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"duration",
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"instances"
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],
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"query": {
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"conditions":[{
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"key": "id",
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"value": item,
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"operator": "=="
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}]
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},
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"range": [0, 100],
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"sort": [{"key": "path", "operator": "+"}]
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})['data']['items']
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files = filter(lambda f: f['type'] == 'video' and f['selected'], files)
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for f in files:
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f['path'] = f['instances'][0]['path']
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del f['instances']
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return files
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def get_clips(terms):
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clips = []
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for term in terms:
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r = api.findClips({
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"keys":["position","annotations","id","in","out","videoRatio", "parts"],
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"query":{"conditions":[{"operator":"=","key":"subtitles","value":term}],
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"operator":"&"},
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"range":[0,1000],
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"sort":[{"operator":"+","key":"position"}],
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#"sort":[{"operator":"+","key":"year"}],
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"itemsQuery":{
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"operator":"&",
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"conditions":[{"operator":"=","key":"subtitles","value":term}]
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}
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})
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if not 'data' in r or not 'items' in r['data']:
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print r
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clips += r['data']['items']
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cache = {}
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playlist = []
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clips.sort(key=lambda c: c['in'])
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for clip in clips:
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id = clip['id'].split('/')[0]
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part = 1
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if not id in cache:
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cache[id] = get_files(id)
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data = cache[id]
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position = 0
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#FIXME: handle clips that span across parts
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for part, f in enumerate(data):
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if clip['in'] < position + f['duration']:
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clip_in = clip['in'] - position
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clip_out = clip['out'] - position
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break
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else:
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position += f['duration']
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path = f['path']
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print path, clip_in, clip_out
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subtitles = ''
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for a in clip['annotations']:
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subtitles += a['value']
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subtitles = ox.strip_tags(subtitles)
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playlist.append({
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"id": id,
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"part": part,
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"path": path,
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"in": clip_in,
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"out": clip_out,
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"subtitles": subtitles
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})
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return playlist
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if __name__ == "__main__":
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import sys
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if len(sys.argv) != 3:
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print 'usage: %s <term> <output.json>' % sys.argv[0]
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sys.exit(1)
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terms = [sys.argv[1]]
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output = sys.argv[2]
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playlist = get_clips(terms)
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with open(output, 'w') as f:
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json.dump(playlist, f, indent=2)
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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from __future__ import division, with_statement
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import os
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import sys
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import json
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import ox
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MIN_DURATION = 2
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profiles = {
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'pal': '<profile width="720" display_aspect_den="3" colorspace="601" frame_rate_den="1" description="DV/DVD PAL" height="576" display_aspect_num="4" frame_rate_num="25" progressive="0" sample_aspect_num="16" sample_aspect_den="15"/>'
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}
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class Video:
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position = 0
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playlist = []
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producers = {}
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template = '''<?xml version='1.0' encoding='utf-8'?>
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<mlt title="%(title)s" version="0.8.0" root="%(root)s" LC_NUMERIC="en_US.UTF-8">
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%(profile)s
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<producer in="0" out="72869" id="black">
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<property name="mlt_type">producer</property>
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<property name="length">72870</property>
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<property name="eof">pause</property>
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<property name="resource">black</property>
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<property name="aspect_ratio">0</property>
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<property name="mlt_service">colour</property>
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</producer>
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<playlist id="black_track">
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<entry in="0" out="12047" producer="black"/>
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</playlist>
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<playlist id="playlist1"/>
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<playlist id="playlist2"/>
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<playlist id="playlist3"/>
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%(producers)s
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<playlist id="playlist4">
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%(playlist)s
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</playlist>
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<playlist id="playlist5"/>
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<tractor title="%(title)s" global_feed="1" in="0" out="12047" id="maintractor">
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<property name="meta.volume">1</property>
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<track producer="black_track"/>
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<track hide="video" producer="playlist1"/>
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<track hide="video" producer="playlist2"/>
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<track producer="playlist3"/>
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<track producer="playlist4"/>
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<track producer="playlist5"/>
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<transition id="transition0">
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<property name="a_track">1</property>
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<property name="b_track">2</property>
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<property name="mlt_type">transition</property>
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<property name="mlt_service">mix</property>
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<property name="always_active">1</property>
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<property name="combine">1</property>
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<property name="internal_added">237</property>
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</transition>
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<transition id="transition1">
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<property name="a_track">1</property>
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<property name="b_track">3</property>
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<property name="mlt_type">transition</property>
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<property name="mlt_service">mix</property>
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<property name="always_active">1</property>
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<property name="combine">1</property>
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<property name="internal_added">237</property>
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</transition>
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<transition id="transition2">
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<property name="a_track">1</property>
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<property name="b_track">4</property>
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<property name="mlt_type">transition</property>
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<property name="mlt_service">mix</property>
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<property name="always_active">1</property>
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<property name="combine">1</property>
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<property name="internal_added">237</property>
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</transition>
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<transition id="transition3">
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<property name="a_track">1</property>
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<property name="b_track">5</property>
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<property name="mlt_type">transition</property>
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<property name="mlt_service">mix</property>
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<property name="always_active">1</property>
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<property name="combine">1</property>
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<property name="internal_added">237</property>
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</transition>
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</tractor>
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<kdenlivedoc profile="dv_pal" kdenliveversion="0.9.2" version="0.88" projectfolder="%(root)s">
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<customeffects/>
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<documentproperties proxyimageminsize="2000" zonein="0" enableproxy="0" zoneout="100" generateproxy="0" zoom="9" verticalzoom="1" proxyextension="ts" position="1" documentid="1353193897205" generateimageproxy="0" proxyminsize="1000" proxyparams="-f mpegts -acodec libmp3lame -ac 2 -ab 128k -ar 48000 -vcodec mpeg2video -g 5 -deinterlace -s 480x270 -vb 400k"/>
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<documentmetadata/>
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<documentnotes><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
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<html><head><meta name="qrichtext" content="1" /><style type="text/css">
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p, li { white-space: pre-wrap; }
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</style></head><body style=" font-family:'Sans Serif'; font-size:8pt; font-weight:400; font-style:normal;">
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<p style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><br /></p></body></html></documentnotes>
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<profileinfo width="720" display_aspect_den="3" frame_rate_den="1" description="DV/DVD PAL" height="576" frame_rate_num="25" display_aspect_num="4" progressive="0" sample_aspect_num="16" sample_aspect_den="15"/>
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<tracksinfo>
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<trackinfo blind="1" mute="0" locked="0" trackname="Audio 2" type="audio"/>
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<trackinfo blind="1" mute="0" locked="0" trackname="Audio 1" type="audio"/>
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<trackinfo blind="0" mute="0" locked="0" trackname="Video 3"/>
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<trackinfo blind="0" mute="0" locked="0" trackname="Video 2"/>
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<trackinfo blind="0" mute="0" locked="0" trackname="Video 1"/>
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</tracksinfo>
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%(kdenlive_producers)s
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<markers/>
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<groups/>
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</kdenlivedoc>
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</mlt>
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'''
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def __init__(self, data, title, url, root):
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files = []
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items = []
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for c in data:
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files.append(c['path'])
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items.append(c['id'])
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files = list(set(files))
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items = list(set(items))
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self.files = files
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self.clips = data
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self.fps = 25
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profile = profiles[self.fps == 25 and 'pal' or 'ntsc']
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self.info = {
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'profile': profile,
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'root': root,
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'title': title,
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'url': url,
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'producers': '',
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'kdenlive_producers': '',
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'duration': 0,
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'stats': '%d clips from %d films' % (len(self.clips), len(items))
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}
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self.add_title()
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for clip in self.clips:
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path = clip['path']
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if not path.startswith('/'):
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path = os.path.join('/data/Cinema', clip['path'])
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out = clip['out']
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if out-clip['in'] < MIN_DURATION:
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out = clip['in'] + MIN_DURATION
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duration = int((out-clip['in']) * self.fps)
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self.add_clip(path, clip['in'], out)
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self.info['duration'] += duration
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def render(self, output):
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xml = output
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with open(xml, 'w') as f:
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self.info['playlist'] = '\n'.join(self.playlist)
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data = self.template % self.info
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f.write(data.strip())
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#os.system('melt -progress "%s" -consumer "avformat:%s"'%(xml, output))
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def add_title(self):
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self.info['duration'] = 5*self.fps
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self.info['producers'] += '''
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<producer in="0" out="%(duration)s" id="1">
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<property name="mlt_type">producer</property>
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<property name="length">%(duration)s</property>
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<property name="eof">pause</property>
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<property name="resource"/>
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<property name="mlt_service">kdenlivetitle</property>
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<property name="xmldata"><kdenlivetitle width="768" height="576" out="125" LC_NUMERIC="en_US.UTF-8">
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<item z-index="2" type="QGraphicsTextItem">
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<position x="86" y="123">
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<transform>1,0,0,0,1,0,0,0,1</transform>
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</position>
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<content font-color="255,255,255,255" font-outline-color="0,0,0,255" font-pixel-size="151" font-italic="0" alignment="4" font-underline="0" font-weight="50" font="Arial Black" font-outline="0.5">%(title)s</content>
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</item>
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<item z-index="1" type="QGraphicsTextItem">
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<position x="79" y="321">
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<transform>1,0,0,0,1,0,0,0,1</transform>
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</position>
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<content font-color="255,255,255,255" font-outline-color="0,0,0,255" font-pixel-size="24" font-italic="0" alignment="4" font-underline="0" font-weight="50" font="Arial Black" font-outline="0.5">%(url)s
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%(stats)s</content>
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</item>
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<startviewport rect="0,0,768,576"/>
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<endviewport rect="0,0,768,576"/>
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<background color="0,0,0,0"/>
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</kdenlivetitle>
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</property>
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<property name="force_reload">0</property>
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</producer>
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''' % self.info
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self.playlist.append('<entry in="%s" out="%s" producer="1"/>' % (0, self.info['duration']))
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self.info['kdenlive_producers'] += '''
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<kdenlive_producer audio_max="0" id="1" default_video="0" xmldata="<kdenlivetitle width="768" height="576" out="125" LC_NUMERIC="en_US.UTF-8">
 <item z-index="2" type="QGraphicsTextItem">
 <position x="86" y="123">
 <transform>1,0,0,0,1,0,0,0,1</transform>
 </position>
 <content font-color="255,255,255,255" font-outline-color="0,0,0,255" font-pixel-size="151" font-italic="0" alignment="4" font-underline="0" font-weight="50" font="Arial Black" font-outline="0.5">%(title)s</content>
 </item>
 <item z-index="1" type="QGraphicsTextItem">
 <position x="79" y="321">
 <transform>1,0,0,0,1,0,0,0,1</transform>
 </position>
 <content font-color="255,255,255,255" font-outline-color="0,0,0,255" font-pixel-size="24" font-italic="0" alignment="4" font-underline="0" font-weight="50" font="Arial Black" font-outline="0.5">%(url)s
%(stats)s</content>
 </item>
 <startviewport rect="0,0,768,576"/>
 <endviewport rect="0,0,768,576"/>
 <background color="0,0,0,0"/>
</kdenlivetitle>
" name="Title" in="0" thumbnail="100" transparency="1" default_audio="0" duration="125" aspect_ratio="0.000000" channels="0" frequency="0" out="125" video_max="0" progressive="0" type="6" frame_size="720x576"/>
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''' % self.info
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def add_producer(self, uri):
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c = len(self.producers.keys()) + 2
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self.producers[uri] = c
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info = ox.avinfo(uri)
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i = {
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'id': c,
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'duration': int(info['duration'] * self.fps),
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'filename': uri.encode('utf-8'),
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'basename': os.path.basename(uri).encode('utf-8')
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}
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i['out'] = i['duration'] - 1
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self.info['producers'] += '''
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<producer in="0" out="%(out)s" id="%(id)s_1">
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<property name="mlt_type">producer</property>
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<property name="length">%(duration)s</property>
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<property name="eof">pause</property>
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<property name="resource">%(filename)s</property>
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<property name="seekable">1</property>
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<property name="mlt_service">avformat</property>
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</producer>
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''' % i
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self.info['kdenlive_producers'] += '''
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<kdenlive_producer
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id="%(id)s"
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name="%(basename)s"
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resource="%(filename)s"
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/>
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''' % i
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def get_producer(self, uri):
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if not uri in self.producers:
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self.add_producer(uri)
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return self.producers[uri]
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def add_clip(self, uri, start, end):
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start = int(start * self.fps)
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end = int(end * self.fps) - 1
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o = '<entry in="%s" out="%s" producer="%d_1"/>' % (start, end, self.get_producer(uri))
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self.playlist.append(o)
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if __name__ == '__main__':
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if len(sys.argv) != 5:
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print 'usage: %s <json input> <video prefix> <output> <title>' % sys.argv[0]
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sys.exit(1)
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json_input = sys.argv[1]
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video_prefix = sys.argv[2]
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root = sys.argv[3]
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title = sys.argv[4]
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output = json_input + '.kdenlive'
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url = 'http://pan.do/ra'
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data = json.load(open(json_input))
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c = Video(data,
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title,
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url,
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root)
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c.render(output)
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