ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/scripts/corrected-final-attempt-1.py

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+import bpy
+
+# Configuration
+INPUT_PATH = "/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/source.mov"
+OUTPUT_PATH = "/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/final.mp4"
+FPS = 25
+START_SECONDS = 9.000
+END_SECONDS = 12.000
+
+# Timing calculations
+start_frame = int(round(START_SECONDS * FPS))
+dur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))
+render_dur = int(round(dur_frames * 1.5))
+
+# Scene setup
+scene = bpy.context.scene
+
+# Render settings
+scene.render.resolution_x = 854
+scene.render.resolution_y = 480
+scene.render.resolution_percentage = 100
+scene.render.fps = FPS
+scene.render.fps_base = 1.0
+scene.render.image_settings.file_format = 'FFMPEG'
+scene.render.ffmpeg.format = 'MPEG4'
+scene.render.ffmpeg.codec = 'H264'
+scene.render.ffmpeg.audio_codec = 'AAC'
+scene.render.filepath = OUTPUT_PATH
+
+# Sequence Editor setup
+se = scene.sequence_editor_create()
+
+# Video track
+movie = se.sequences.new_movie(
+    name='clip',
+    filepath=INPUT_PATH,
+    channel=1,
+    frame_start=1 - start_frame
+)
+
+# Audio track
+sound = se.sequences.new_sound(
+    name='audio',
+    filepath=INPUT_PATH,
+    channel=2,
+    frame_start=1 - start_frame
+)
+
+# Trim media to interval
+for strip in (movie, sound):
+    strip.frame_offset_start = start_frame
+    strip.frame_final_duration = dur_frames
+
+# Slow motion effect
+speed = se.sequences.new_effect(
+    name='slowmo',
+    type='SPEED',
+    channel=3,
+    frame_start=1,
+    frame_end=1 + dur_frames,
+    seq1=movie
+)
+speed.speed_control = 'MULTIPLY'
+speed.speed_factor = 1 / 1.5
+speed.use_default_fade = False
+movie.frame_final_duration = render_dur
+
+# Subtitle with background
+text = se.sequences.new_effect(
+    name='subtitle',
+    type='TEXT',
+    channel=4,
+    frame_start=1,
+    frame_end=1 + render_dur
+)
+text.text = 'BIG BUNNY'
+text.location = (0.5, 0.12)
+text.align_x = 'CENTER'
+text.align_y = 'BOTTOM'
+text.use_box = True
+text.box_color = (0, 0, 0, 0.6)
+
+# Render range
+scene.frame_start = 1
+scene.frame_end = render_dur
+
+# Execute render
+bpy.ops.render.render(animation=True)

chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/scripts/negative-control-attempt-1.py

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+import bpy
+
+# Configuration
+INPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/source.mov'
+OUTPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/negative_control.mp4'
+START_SECONDS = 0.000
+END_SECONDS = 3.000
+FPS = 25
+
+# Calculate timing parameters
+start_frame = int(round(START_SECONDS * FPS))
+dur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))
+render_dur = int(round(dur_frames * 1.5))
+
+# Initialize scene
+scene = bpy.context.scene
+scene.sequence_editor_clear()
+
+# Render settings
+scene.render.resolution_x = 854
+scene.render.resolution_y = 480
+scene.render.resolution_percentage = 100
+scene.render.fps = FPS
+scene.render.fps_base = 1.0
+scene.render.filepath = OUTPUT_PATH
+scene.render.image_settings.file_format = 'MPEG4'
+scene.render.ffmpeg.format = 'MPEG4'
+scene.render.ffmpeg.codec = 'H264'
+scene.render.ffmpeg.audio_codec = 'AAC'
+
+# Video Sequence Editor setup
+se = scene.sequence_editor_create()
+
+# Add movie and audio strips
+movie = se.sequences.new_movie(
+    name='clip',
+    filepath=INPUT_PATH,
+    channel=1,
+    frame_start=1 - start_frame
+)
+sound = se.sequences.new_sound(
+    name='audio',
+    filepath=INPUT_PATH,
+    channel=2,
+    frame_start=1 - start_frame
+)
+
+# Set trim for both media strips
+for strip in (movie, sound):
+    strip.frame_offset_start = start_frame
+    strip.frame_final_duration = dur_frames
+
+# Add speed effect for slow motion
+speed = se.sequences.new_effect(
+    name='slowmo',
+    type='SPEED',
+    channel=3,
+    frame_start=1,
+    frame_end=1 + dur_frames,
+    seq1=movie
+)
+speed.speed_control = 'MULTIPLY'
+speed.speed_factor = 1 / 1.5
+speed.use_default_fade = False
+
+# Extend movie strip to match render duration
+movie.frame_final_duration = render_dur
+
+# Add subtitle text strip
+text = se.sequences.new_effect(
+    name='subtitle',
+    type='TEXT',
+    channel=4,
+    frame_start=1,
+    frame_end=1 + render_dur
+)
+text.text = 'BIG BUNNY'
+text.location = (0.5, 0.12)
+text.align_x = 'CENTER'
+text.align_y = 'BOTTOM'
+text.use_box = True
+text.box_color = (0, 0, 0, 0.6)
+
+# Set render frame range
+scene.frame_start = 1
+scene.frame_end = render_dur
+
+# Render animation
+bpy.ops.render.render(animation=True)

chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/scripts/negative-control-attempt-2.py

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+import bpy
+
+# Clear existing data
+bpy.ops.wm.read_factory_settings(use_empty=True)
+scene = bpy.context.scene
+
+# Configuration
+INPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/source.mov'
+OUTPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/negative_control.mp4'
+FPS = 25
+START_SECONDS = 0.000
+END_SECONDS = 3.000
+
+# Calculate timing variables
+start_frame = int(round(START_SECONDS * FPS))
+dur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))
+render_dur = int(round(dur_frames * 1.5))
+
+# Scene settings
+scene.frame_start = 1
+scene.frame_end = render_dur
+scene.render.fps = FPS
+scene.render.fps_base = 1.0
+
+# Render resolution (854x480 for H.264 compatibility)
+scene.render.resolution_x = 854
+scene.render.resolution_y = 480
+scene.render.resolution_percentage = 100
+
+# Output settings
+scene.render.image_settings.file_format = 'FFMPEG'
+scene.render.ffmpeg.format = 'MPEG4'
+scene.render.ffmpeg.codec = 'H264'
+scene.render.ffmpeg.constant_rate_factor = 'MEDIUM'
+scene.render.ffmpeg.audio_codec = 'AAC'
+scene.render.ffmpeg.audio_bitrate = 192
+scene.render.ffmpeg.audio_channels = 'STEREO'
+scene.render.ffmpeg.audio_sample_rate = 44100
+scene.render.filepath = OUTPUT_PATH
+
+# Create sequence editor
+se = scene.sequence_editor_create()
+
+# Add video clip
+movie = se.sequences.new_movie(
+    name='clip',
+    filepath=INPUT_PATH,
+    channel=1,
+    frame_start=1 - start_frame
+)
+
+# Add audio track
+sound = se.sequences.new_sound(
+    name='audio',
+    filepath=INPUT_PATH,
+    channel=2,
+    frame_start=1 - start_frame
+)
+
+# Set initial trim for video and audio
+for strip in (movie, sound):
+    strip.frame_offset_start = start_frame
+    strip.frame_final_duration = dur_frames
+
+# Add slow-motion effect to video
+speed = se.sequences.new_effect(
+    name='slowmo',
+    type='SPEED',
+    channel=3,
+    frame_start=1,
+    frame_end=1 + dur_frames,
+    seq1=movie
+)
+speed.speed_control = 'MULTIPLY'
+speed.speed_factor = 1 / 1.5
+speed.use_default_fade = False
+
+# Extend video duration for slow-motion
+movie.frame_final_duration = render_dur
+
+# Add subtitle with background box
+text = se.sequences.new_effect(
+    name='subtitle',
+    type='TEXT',
+    channel=4,
+    frame_start=1,
+    frame_end=1 + render_dur
+)
+text.text = 'BIG BUNNY'
+text.location = (0.5, 0.12)
+text.align_x = 'CENTER'
+text.align_y = 'BOTTOM'
+text.font_size = 48
+text.use_box = True
+text.box_color = (0.0, 0.0, 0.0, 0.6)
+
+# Render animation
+bpy.ops.render.render(animation=True)

chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/scripts/negative-control-attempt-3.py

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+import bpy
+
+# Configuration
+INPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/source.mov'
+OUTPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-053948/negative_control.mp4'
+FPS = 25
+START_SECONDS = 0.000
+END_SECONDS = 3.000
+
+# Calculate timing variables
+start_frame = int(round(START_SECONDS * FPS))
+dur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))
+render_dur = int(round(dur_frames * 1.5))
+
+# Scene setup
+scene = bpy.context.scene
+scene.sequence_editor_clear()  # Ensure clean state
+se = scene.sequence_editor_create()
+
+# Add movie and audio strips
+movie = se.sequences.new_movie(
+    name='clip',
+    filepath=INPUT_PATH,
+    channel=1,
+    frame_start=1 - start_frame
+)
+sound = se.sequences.new_sound(
+    name='audio',
+    filepath=INPUT_PATH,
+    channel=2,
+    frame_start=1 - start_frame
+)
+
+# Set trim for both strips
+for strip in (movie, sound):
+    strip.frame_offset_start = start_frame
+    strip.frame_final_duration = dur_frames
+
+# Add speed effect for slow motion
+speed = se.sequences.new_effect(
+    name='slowmo',
+    type='SPEED',
+    channel=3,
+    frame_start=1,
+    frame_end=1 + dur_frames,
+    seq1=movie
+)
+speed.use_default_fade = False
+speed.speed_control = 'MULTIPLY'
+speed.speed_factor = 1.0 / 1.5
+movie.frame_final_duration = render_dur  # Extend video to render duration
+
+# Add subtitle text strip
+text = se.sequences.new_effect(
+    name='subtitle',
+    type='TEXT',
+    channel=4,
+    frame_start=1,
+    frame_end=1 + render_dur
+)
+text.text = 'BIG BUNNY'
+text.location = (0.5, 0.12)  # Center horizontally, near bottom vertically
+text.align_x = 'CENTER'
+text.align_y = 'BOTTOM'
+text.use_box = True
+text.box_color = (0.0, 0.0, 0.0, 0.6)  # Black semi-transparent background
+
+# Render settings
+scene.frame_start = 1
+scene.frame_end = render_dur
+scene.render.fps = FPS
+scene.render.fps_base = 1.0
+scene.render.resolution_x = 854
+scene.render.resolution_y = 480
+scene.render.resolution_percentage = 100
+scene.render.image_settings.file_format = 'FFMPEG'
+scene.render.ffmpeg.format = 'MPEG4'
+scene.render.ffmpeg.codec = 'H264'
+scene.render.ffmpeg.audio_codec = 'AAC'
+scene.render.filepath = OUTPUT_PATH
+
+# Execute render
+bpy.ops.render.render(animation=True)