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ai-agent-book 精选快照(<2MB 代码与文档,来自 github.com/bojieli/ai-agent-book)
2026-08-20 13:12:50 +00:00

90 lines
2.7 KiB
Python

import bpy
import os
# Clear existing data
bpy.ops.wm.read_factory_settings(use_empty=True)
# Get the current scene
scene = bpy.context.scene
# Set render resolution (854x480 for H.264 even width)
scene.render.resolution_x = 854
scene.render.resolution_y = 480
scene.render.resolution_percentage = 100
# Set frame rate (25 FPS)
scene.render.fps = 25
scene.render.fps_base = 1.0
# Output settings
output_path = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-052206/negative_control.mp4'
scene.render.filepath = output_path
scene.render.image_settings.file_format = 'FFMPEG'
scene.render.ffmpeg.format = 'MPEG4'
scene.render.ffmpeg.codec = 'H.264'
scene.render.ffmpeg.audio_codec = 'AAC'
scene.render.ffmpeg.audio_mixrate = 44100
scene.render.ffmpeg.audio_bitrate = 192
scene.render.use_audio = True
# Create sequence editor
scene.sequence_editor_create()
seq_ed = scene.sequence_editor
# Source movie path
source_path = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-052206/source.mov'
# Add video strip with trim (0.000-3.000s = 75 frames @25FPS)
video_strip = seq_ed.sequences.new_movie(
name='Video',
filepath=source_path,
channel=1,
frame_start=1
)
video_strip.frame_offset_start = 0 # Start at 0s of source
video_strip.frame_final_duration = 75 # Trim to 3s (75 frames)
# Add SPEED effect for slow motion (1.5x duration)
speed_effect = seq_ed.sequences.new_effect(
name='SpeedControl',
type='SPEED',
channel=2,
frame_start=1,
seq1=video_strip
)
speed_effect.speed_control = 'MULTIPLY'
speed_effect.speed_factor = 1/1.5 # Slow playback speed
# Extend video duration to 1.5x trimmed interval (4.5s = 112.5 frames → 113 frames)
video_strip.frame_final_duration = 113
# Configure audio strip (trim to original 3s duration)
sound_strip = None
for strip in seq_ed.sequences:
if strip.type == 'SOUND' and strip.name.startswith('Audio'):
sound_strip = strip
if sound_strip:
sound_strip.frame_offset_start = 0 # Start at 0s of source audio
sound_strip.frame_final_duration = 75 # Keep original 3s duration
# Add subtitle text strip with background box
text_strip = seq_ed.sequences.new_effect(
name='Subtitle',
type='TEXT',
channel=3,
frame_start=1,
frame_final_duration=113
)
text_strip.text = 'BIG BUNNY'
text_strip.align_x = 'CENTER'
text_strip.align_y = 'BOTTOM'
text_strip.use_box = True
text_strip.box_color = (0, 0, 0, 0.6) # Semi-transparent black box
text_strip.font_size = 48
# Set scene frame range to match slowed video duration
scene.frame_start = 1
scene.frame_end = 113
# Render the animation
bpy.ops.render.render(animation=True)