64 lines
1.4 KiB
Python
64 lines
1.4 KiB
Python
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#!/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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def run(cmd):
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print(' '.join('"%s"' % c for c in cmd))
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#subprocess.call(cmd)
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edit_json = sys.argv[1]
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edit = json.load(open(edit_json))
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render = '/tmp/out'
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output = '/tmp/test.mp4'
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height = 270
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aspect = 16/9
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width = int(height * aspect)
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n = 0
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files = []
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for clip in edit:
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out = render + '/%06d.ts' % n
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clip_aspect = clip['resolution'][0] / clip['resolution'][1]
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if clip_aspect < aspect:
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x = width
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y = int(x / clip_aspect)
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else:
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y = height
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x = int(y * clip_aspect)
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vf = 'scale=%s:%s' % (x, y)
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if x != width:
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vf += ',crop=%s:%s' % (width, height) # crop center
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elif y != height:
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offset = int((y - height) / 2)
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vf += ',crop=w=%s:h=%s:x=0:y=%s' % (width, height, offset)
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options = [
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'-vf', vf,
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'-aspect', aspect,
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'-c:v', 'libx264',
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'-b:v', '8M',
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'-r:v', '25',
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'-c:a', 'aac',
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'-ar', '48000',
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'-ac', '2',
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'-b:a', '192k',
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]
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cmd = [
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'ffmpeg',
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'-ss', str(clip['in']),
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'-i', clip['path']
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] + options + [
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'-t', str(clip['out'] - clip['in']),
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out
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]
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files.append(out)
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run(cmd)
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n += 1
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files = '|'.join(files)
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cmd = ['ffmpeg', '-y', '-i', 'concat:' + files, '-c', 'copy', output]
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run(cmd)
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