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85 lines
2.1 KiB
Python
85 lines
2.1 KiB
Python
import bpy
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import math
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# Clear existing objects
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bpy.ops.object.select_all(action='SELECT')
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bpy.ops.object.delete()
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# File paths
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input_path = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-052206/source.mov'
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output_path = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-052206/negative_control.mp4'
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# Scene setup
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scene = bpy.context.scene
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# Render settings
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scene.render.fps = 25
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scene.render.fps_base = 1.0
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scene.render.resolution_x = 854
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scene.render.resolution_y = 480
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scene.render.resolution_percentage = 100
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# Output format settings
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scene.render.image_settings.file_format = 'MPEG4'
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scene.render.ffmpeg.format = 'MPEG4'
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scene.render.ffmpeg.codec = 'H264'
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scene.render.ffmpeg.audio_codec = 'AAC'
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scene.render.filepath = output_path
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# VSE setup
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scene.sequence_editor_create()
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seq_ed = scene.sequence_editor
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# Add video strip
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video_strip = seq_ed.sequences.new_movie(
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name='Video',
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filepath=input_path,
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frame_start=0,
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channel=1
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)
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video_strip.frame_final_duration = 75 # 3s * 25fps
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# Add speed effect (1.5x slowdown)
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original_duration = 75
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new_duration = math.ceil(original_duration * 1.5) # 113 frames (4.52s)
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speed_strip = seq_ed.sequences.new_effect(
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name='SpeedControl',
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type='SPEED',
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channel=2,
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frame_start=0,
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frame_end=new_duration,
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seq1=video_strip
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)
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speed_strip.speed_control = 'MULTIPLY'
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speed_strip.speed_factor = 1/1.5
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# Add audio strip
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audio_strip = seq_ed.sequences.new_sound(
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name='Audio',
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filepath=input_path,
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frame_start=0,
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channel=3
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)
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audio_strip.frame_final_duration = 75 # Keep original audio duration
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# Add subtitle text strip
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text_strip = seq_ed.sequences.new_effect(
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name='Subtitle',
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type='TEXT',
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channel=4,
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frame_start=0,
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frame_end=new_duration
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)
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text_strip.text = 'BIG BUNNY'
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text_strip.align_x = 'CENTER'
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text_strip.align_y = 'BOTTOM'
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text_strip.font_size = 48
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text_strip.use_box = True
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text_strip.box_color = (0, 0, 0, 0.6) # Semi-transparent black box
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# Set render frame range
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scene.frame_start = 1
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scene.frame_end = new_duration
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# Render animation
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bpy.ops.render.render(animation=True) |