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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

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"content": "{\"start\":9.0,\"end\":12.0,\"reason\":\"The large white rabbit is shown alone in a sunny green meadow with mountains and pink clouds at 10.00s and 11.00s, between the 'ONE BIG RABBIT' title (ends at 9.00s) and 'THREE RODENTS' title (starts at 12.00s), with consistent visual elements indicating a single continuous shot.\"}"
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"content": "You are a Blender VSE engineer. Return one JSON object only."
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{
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"content": "Generate a complete Blender 4.3 Python script for this video edit.\n\nInput movie: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\nOutput MP4: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/negative_control.mp4\nSource FPS: 25\nSource size: 853x480; render at 854x480 (one-pixel even-width pad required by H.264)\nTrim interval: [0.000, 3.000] seconds\nEffects: slow playback so output duration is 1.5 times the trimmed interval; add bottom-centered subtitle BIG BUNNY with a visible semi-transparent dark box.\n\nRequirements:\n- Use bpy and Blender's Video Sequence Editor, including new_movie, new_sound when available, frame_offset_start/frame_final_duration, a SPEED effect, and a TEXT effect.\n- Render exactly 854x480 at 25 fps through Blender to MPEG-4 H.264 with AAC audio.\n- Set the scene frame range to the slowed duration and call bpy.ops.render.render(animation=True).\n- Create only the requested output. Do not invoke ffmpeg, subprocesses, a shell, the network, or read credentials.\n- Use APIs available in Blender 4.3 (scene.sequence_editor_create().sequences).\n- In Blender 4.3, SpeedControlSequence has no use_audio property. Never read or assign use_audio, and do not apply a SPEED effect to the sound strip. A valid movie slow-motion pattern is speed_control='MULTIPLY', speed_factor=1/1.5, and extending the movie/render duration; the sound strip may remain normally trimmed.\n- For the subtitle background, prefer the TEXT strip's use_box=True and box_color=(0,0,0,0.6); do not assume a COLOR strip has text-layout properties.\n\nUse this real-Blender-4.3-validated timing pattern, substituting the supplied paths and interval but preserving the timing relationships exactly:\n```\nFPS = 25\nstart_frame = int(round(START_SECONDS * FPS))\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\nrender_dur = int(round(dur_frames * 1.5))\nse = scene.sequence_editor_create()\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1,\n frame_start=1 - start_frame)\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2,\n frame_start=1 - start_frame)\nfor strip in (movie, sound):\n strip.frame_offset_start = start_frame\n strip.frame_final_duration = dur_frames\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3,\n frame_start=1, frame_end=1 + dur_frames, seq1=movie)\nspeed.use_default_fade = False\nspeed.speed_control = 'MULTIPLY'\nspeed.speed_factor = 1.0 / 1.5\nmovie.frame_final_duration = render_dur\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4,\n frame_start=1, frame_end=1 + render_dur)\ntext.text = 'BIG BUNNY'; text.location = (0.5, 0.12)\ntext.align_x = 'CENTER'; text.align_y = 'BOTTOM'\ntext.use_box = True; text.box_color = (0.0, 0.0, 0.0, 0.6)\nscene.frame_start = 1; scene.frame_end = render_dur\n```\nThis pattern was executed against Blender 4.3.2 and visibly retained the requested source frames through the whole slowed output. Do not replace its negative source-strip frame_start with frame_start=1: frame_offset_start would then move the visible strip later and render black frames.\n\nReturn one JSON object only: {\"code\":\"complete executable Python source\"}.\n"
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"content": "{\"code\": \"import bpy\\n\\nINPUT_PATH = \\\"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\\\"\\nOUTPUT_PATH = \\\"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/negative_control.mp4\\\"\\nFPS = 25\\nSTART_SECONDS = 0.000\\nEND_SECONDS = 3.000\\n\\n# Calculate timing parameters\\nstart_frame = int(round(START_SECONDS * FPS))\\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\\nrender_dur = int(round(dur_frames * 1.5))\\n\\n# Scene setup\\nscene = bpy.context.scene\\nscene.render.fps = FPS\\nscene.render.fps_base = 1.0\\nscene.render.resolution_x = 854\\nscene.render.resolution_y = 480\\nscene.render.resolution_percentage = 100\\n\\n# Render settings\\nscene.render.image_settings.file_format = 'FFMPEG'\\nscene.render.ffmpeg.format = 'MPEG4'\\nscene.render.ffmpeg.codec = 'H264'\\nscene.render.ffmpeg.audio_codec = 'AAC'\\nscene.render.filepath = OUTPUT_PATH\\n\\n# Sequence editor setup\\nse = scene.sequence_editor_create()\\n\\n# Add movie strip\\nmovie = se.sequences.new_movie(\\n name='clip',\\n filepath=INPUT_PATH,\\n channel=1,\\n frame_start=1 - start_frame\\n)\\nmovie.frame_offset_start = start_frame\\nmovie.frame_final_duration = dur_frames\\n\\n# Add sound strip\\nsound = se.sequences.new_sound(\\n name='audio',\\n filepath=INPUT_PATH,\\n channel=2,\\n frame_start=1 - start_frame\\n)\\nsound.frame_offset_start = start_frame\\nsound.frame_final_duration = dur_frames\\n\\n# Add speed effect\\nspeed = se.sequences.new_effect(\\n name='slowmo',\\n type='SPEED',\\n channel=3,\\n frame_start=1,\\n frame_end=1 + dur_frames,\\n seq1=movie\\n)\\nspeed.use_default_fade = False\\nspeed.speed_control = 'MULTIPLY'\\nspeed.speed_factor = 1.0 / 1.5\\n\\n# Extend movie duration for slowmo\\nmovie.frame_final_duration = render_dur\\n\\n# Add subtitle text\\ntext = se.sequences.new_effect(\\n name='subtitle',\\n type='TEXT',\\n channel=4,\\n frame_start=1,\\n frame_end=1 + render_dur\\n)\\ntext.text = 'BIG BUNNY'\\ntext.location = (0.5, 0.12)\\ntext.align_x = 'CENTER'\\ntext.align_y = 'BOTTOM'\\ntext.use_box = True\\ntext.box_color = (0.0, 0.0, 0.0, 0.6)\\n\\n# Set render frame range\\nscene.frame_start = 1\\nscene.frame_end = render_dur\\n\\n# Render the animation\\nbpy.ops.render.render(animation=True)\"}"
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"text": "Independently review these actual rendered keyframes against this edit request:\nCut out the shot of the large white rabbit walking alone in the sunny meadow, slow it to 1.5x duration, and add the subtitle BIG BUNNY along the bottom.\n\nThe target source shot is: the single continuous shot showing the large white rabbit walking alone in a sunny green meadow, after the ONE BIG RABBIT title and before the THREE RODENTS title.\nJudge the pixels, not filenames or claims. Return JSON exactly with:\n{\"pass\":boolean,\"target_present\":boolean,\"irrelevant_content_present\":boolean,\n \"subtitle_visible\":boolean,\"feedback\":\"specific evidence from the frames\"}.\nPass only if all frames show the intended large white rabbit meadow shot without title cards or unrelated scenes and the BIG BUNNY subtitle is visibly overlaid near the bottom.\n"
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"content": "You are a Blender VSE engineer. Return one JSON object only."
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"content": "Generate a complete Blender 4.3 Python script for this video edit.\n\nInput movie: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\nOutput MP4: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4\nSource FPS: 25\nSource size: 853x480; render at 854x480 (one-pixel even-width pad required by H.264)\nTrim interval: [9.000, 12.000] seconds\nEffects: slow playback so output duration is 1.5 times the trimmed interval; add bottom-centered subtitle BIG BUNNY with a visible semi-transparent dark box.\n\nRequirements:\n- Use bpy and Blender's Video Sequence Editor, including new_movie, new_sound when available, frame_offset_start/frame_final_duration, a SPEED effect, and a TEXT effect.\n- Render exactly 854x480 at 25 fps through Blender to MPEG-4 H.264 with AAC audio.\n- Set the scene frame range to the slowed duration and call bpy.ops.render.render(animation=True).\n- Create only the requested output. Do not invoke ffmpeg, subprocesses, a shell, the network, or read credentials.\n- Use APIs available in Blender 4.3 (scene.sequence_editor_create().sequences).\n- In Blender 4.3, SpeedControlSequence has no use_audio property. Never read or assign use_audio, and do not apply a SPEED effect to the sound strip. A valid movie slow-motion pattern is speed_control='MULTIPLY', speed_factor=1/1.5, and extending the movie/render duration; the sound strip may remain normally trimmed.\n- For the subtitle background, prefer the TEXT strip's use_box=True and box_color=(0,0,0,0.6); do not assume a COLOR strip has text-layout properties.\n\nUse this real-Blender-4.3-validated timing pattern, substituting the supplied paths and interval but preserving the timing relationships exactly:\n```\nFPS = 25\nstart_frame = int(round(START_SECONDS * FPS))\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\nrender_dur = int(round(dur_frames * 1.5))\nse = scene.sequence_editor_create()\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1,\n frame_start=1 - start_frame)\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2,\n frame_start=1 - start_frame)\nfor strip in (movie, sound):\n strip.frame_offset_start = start_frame\n strip.frame_final_duration = dur_frames\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3,\n frame_start=1, frame_end=1 + dur_frames, seq1=movie)\nspeed.use_default_fade = False\nspeed.speed_control = 'MULTIPLY'\nspeed.speed_factor = 1.0 / 1.5\nmovie.frame_final_duration = render_dur\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4,\n frame_start=1, frame_end=1 + render_dur)\ntext.text = 'BIG BUNNY'; text.location = (0.5, 0.12)\ntext.align_x = 'CENTER'; text.align_y = 'BOTTOM'\ntext.use_box = True; text.box_color = (0.0, 0.0, 0.0, 0.6)\nscene.frame_start = 1; scene.frame_end = render_dur\n```\nThis pattern was executed against Blender 4.3.2 and visibly retained the requested source frames through the whole slowed output. Do not replace its negative source-strip frame_start with frame_start=1: frame_offset_start would then move the visible strip later and render black frames.\n\nReturn one JSON object only: {\"code\":\"complete executable Python source\"}.\n"
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"content": "{\"code\": \"import bpy\\n\\nINPUT_PATH = \\\"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\\\"\\nOUTPUT_PATH = \\\"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4\\\"\\nFPS = 25\\nSTART_SECONDS = 9.0\\nEND_SECONDS = 12.0\\n\\n# Calculate timing parameters\\nstart_frame = int(round(START_SECONDS * FPS))\\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\\nrender_dur = int(round(dur_frames * 1.5))\\n\\n# Setup scene\\nscene = bpy.context.scene\\nscene.sequence_editor_clear()\\nse = scene.sequence_editor_create()\\n\\n# Create video and audio strips\\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1,\\n frame_start=1 - start_frame)\\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2,\\n frame_start=1 - start_frame)\\n\\n# Trim media to interval\\nfor strip in (movie, sound):\\n strip.frame_offset_start = start_frame\\n strip.frame_final_duration = dur_frames\\n\\n# Apply slowmotion to video\\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3,\\n frame_start=1, frame_end=1 + dur_frames, seq1=movie)\\nspeed.use_default_fade = False\\nspeed.speed_control = 'MULTIPLY'\\nspeed.speed_factor = 1.0 / 1.5\\nmovie.frame_final_duration = render_dur\\n\\n# Add subtitle with background\\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4,\\n frame_start=1, frame_end=1 + render_dur)\\ntext.text = 'BIG BUNNY'\\ntext.location = (0.5, 0.12)\\ntext.align_x = 'CENTER'\\ntext.align_y = 'BOTTOM'\\ntext.use_box = True\\ntext.box_color = (0.0, 0.0, 0.0, 0.6)\\n\\n# Configure render settings\\nscene.frame_start = 1\\nscene.frame_end = render_dur\\nscene.render.resolution_x = 854\\nscene.render.resolution_y = 480\\nscene.render.resolution_percentage = 100\\nscene.render.fps = FPS\\nscene.render.image_settings.file_format = 'MPEG4'\\nscene.render.image_settings.codec = 'H264'\\nscene.render.ffmpeg.audio_codec = 'AAC'\\nscene.render.filepath = OUTPUT_PATH\\n\\n# Execute render\\nbpy.ops.render.render(animation=True)\"}"
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"content": "Generate a complete Blender 4.3 Python script for this video edit.\n\nInput movie: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\nOutput MP4: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4\nSource FPS: 25\nSource size: 853x480; render at 854x480 (one-pixel even-width pad required by H.264)\nTrim interval: [9.000, 12.000] seconds\nEffects: slow playback so output duration is 1.5 times the trimmed interval; add bottom-centered subtitle BIG BUNNY with a visible semi-transparent dark box.\n\nRequirements:\n- Use bpy and Blender's Video Sequence Editor, including new_movie, new_sound when available, frame_offset_start/frame_final_duration, a SPEED effect, and a TEXT effect.\n- Render exactly 854x480 at 25 fps through Blender to MPEG-4 H.264 with AAC audio.\n- Set the scene frame range to the slowed duration and call bpy.ops.render.render(animation=True).\n- Create only the requested output. Do not invoke ffmpeg, subprocesses, a shell, the network, or read credentials.\n- Use APIs available in Blender 4.3 (scene.sequence_editor_create().sequences).\n- In Blender 4.3, SpeedControlSequence has no use_audio property. Never read or assign use_audio, and do not apply a SPEED effect to the sound strip. A valid movie slow-motion pattern is speed_control='MULTIPLY', speed_factor=1/1.5, and extending the movie/render duration; the sound strip may remain normally trimmed.\n- For the subtitle background, prefer the TEXT strip's use_box=True and box_color=(0,0,0,0.6); do not assume a COLOR strip has text-layout properties.\n\nUse this real-Blender-4.3-validated timing pattern, substituting the supplied paths and interval but preserving the timing relationships exactly:\n```\nFPS = 25\nstart_frame = int(round(START_SECONDS * FPS))\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\nrender_dur = int(round(dur_frames * 1.5))\nse = scene.sequence_editor_create()\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1,\n frame_start=1 - start_frame)\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2,\n frame_start=1 - start_frame)\nfor strip in (movie, sound):\n strip.frame_offset_start = start_frame\n strip.frame_final_duration = dur_frames\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3,\n frame_start=1, frame_end=1 + dur_frames, seq1=movie)\nspeed.use_default_fade = False\nspeed.speed_control = 'MULTIPLY'\nspeed.speed_factor = 1.0 / 1.5\nmovie.frame_final_duration = render_dur\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4,\n frame_start=1, frame_end=1 + render_dur)\ntext.text = 'BIG BUNNY'; text.location = (0.5, 0.12)\ntext.align_x = 'CENTER'; text.align_y = 'BOTTOM'\ntext.use_box = True; text.box_color = (0.0, 0.0, 0.0, 0.6)\nscene.frame_start = 1; scene.frame_end = render_dur\n```\nThis pattern was executed against Blender 4.3.2 and visibly retained the requested source frames through the whole slowed output. Do not replace its negative source-strip frame_start with frame_start=1: frame_offset_start would then move the visible strip later and render black frames.\n\nReturn one JSON object only: {\"code\":\"complete executable Python source\"}.\n\nPrior executable feedback:\nBlender exit=0; output_exists=False. Tail of real Blender log:\nBlender 4.3.2 (hash 32f5fdce0a0a built 2024-12-17 02:14:25)\nTraceback (most recent call last):\n File \"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/scripts/corrected-final-attempt-1.py\", line 55, in <module>\n scene.render.image_settings.file_format = 'MPEG4'\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nTypeError: bpy_struct: item.attr = val: enum \"MPEG4\" not found in ('BMP', 'IRIS', 'PNG', 'JPEG', 'JPEG2000', 'TARGA', 'TARGA_RAW', 'CINEON', 'DPX', 'OPEN_EXR_MULTILAYER', 'OPEN_EXR', 'HDR', 'TIFF', 'WEBP', 'FFMPEG')\n\nBlender quit"
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"content": "{\"code\": \"import bpy\\n\\nINPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov'\\nOUTPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4'\\nFPS = 25\\nSTART_SECONDS = 9.000\\nEND_SECONDS = 12.000\\n\\n# Calculate timing values\\nstart_frame = int(round(START_SECONDS * FPS))\\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\\nrender_dur = int(round(dur_frames * 1.5))\\n\\n# Setup scene\\nscene = bpy.context.scene\\nscene.sequence_editor_clear()\\nse = scene.sequence_editor_create()\\n\\n# Add movie and audio strips\\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1, frame_start=1 - start_frame)\\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2, frame_start=1 - start_frame)\\n\\n# Set trim for both strips\\nfor strip in (movie, sound):\\n strip.frame_offset_start = start_frame\\n strip.frame_final_duration = dur_frames\\n\\n# Add speed effect to movie\\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3, frame_start=1, frame_end=1 + dur_frames, seq1=movie)\\nspeed.use_default_fade = False\\nspeed.speed_control = 'MULTIPLY'\\nspeed.speed_factor = 1.0 / 1.5\\nmovie.frame_final_duration = render_dur\\n\\n# Add subtitle text strip\\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4, frame_start=1, frame_end=1 + render_dur)\\ntext.text = 'BIG BUNNY'\\ntext.location = (0.5, 0.12)\\ntext.align_x = 'CENTER'\\ntext.align_y = 'BOTTOM'\\ntext.use_box = True\\ntext.box_color = (0.0, 0.0, 0.0, 0.6)\\n\\n# Render settings\\nscene.frame_start = 1\\nscene.frame_end = render_dur\\nscene.render.resolution_x = 854\\nscene.render.resolution_y = 480\\nscene.render.resolution_percentage = 100\\nscene.render.fps = FPS\\nscene.render.fps_base = 1.0\\nscene.render.filepath = OUTPUT_PATH\\nscene.render.file_format = 'FFMPEG'\\nscene.render.ffmpeg.format = 'MPEG4'\\nscene.render.ffmpeg.codec = 'H264'\\nscene.render.ffmpeg.audio_codec = 'AAC'\\n\\n# Execute render\\nbpy.ops.render.render(animation=True)\"}"
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{
"role": "user",
"content": "Generate a complete Blender 4.3 Python script for this video edit.\n\nInput movie: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\nOutput MP4: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4\nSource FPS: 25\nSource size: 853x480; render at 854x480 (one-pixel even-width pad required by H.264)\nTrim interval: [9.000, 12.000] seconds\nEffects: slow playback so output duration is 1.5 times the trimmed interval; add bottom-centered subtitle BIG BUNNY with a visible semi-transparent dark box.\n\nRequirements:\n- Use bpy and Blender's Video Sequence Editor, including new_movie, new_sound when available, frame_offset_start/frame_final_duration, a SPEED effect, and a TEXT effect.\n- Render exactly 854x480 at 25 fps through Blender to MPEG-4 H.264 with AAC audio.\n- Set the scene frame range to the slowed duration and call bpy.ops.render.render(animation=True).\n- Create only the requested output. Do not invoke ffmpeg, subprocesses, a shell, the network, or read credentials.\n- Use APIs available in Blender 4.3 (scene.sequence_editor_create().sequences).\n- In Blender 4.3, SpeedControlSequence has no use_audio property. Never read or assign use_audio, and do not apply a SPEED effect to the sound strip. A valid movie slow-motion pattern is speed_control='MULTIPLY', speed_factor=1/1.5, and extending the movie/render duration; the sound strip may remain normally trimmed.\n- For the subtitle background, prefer the TEXT strip's use_box=True and box_color=(0,0,0,0.6); do not assume a COLOR strip has text-layout properties.\n\nUse this real-Blender-4.3-validated timing pattern, substituting the supplied paths and interval but preserving the timing relationships exactly:\n```\nFPS = 25\nstart_frame = int(round(START_SECONDS * FPS))\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\nrender_dur = int(round(dur_frames * 1.5))\nse = scene.sequence_editor_create()\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1,\n frame_start=1 - start_frame)\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2,\n frame_start=1 - start_frame)\nfor strip in (movie, sound):\n strip.frame_offset_start = start_frame\n strip.frame_final_duration = dur_frames\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3,\n frame_start=1, frame_end=1 + dur_frames, seq1=movie)\nspeed.use_default_fade = False\nspeed.speed_control = 'MULTIPLY'\nspeed.speed_factor = 1.0 / 1.5\nmovie.frame_final_duration = render_dur\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4,\n frame_start=1, frame_end=1 + render_dur)\ntext.text = 'BIG BUNNY'; text.location = (0.5, 0.12)\ntext.align_x = 'CENTER'; text.align_y = 'BOTTOM'\ntext.use_box = True; text.box_color = (0.0, 0.0, 0.0, 0.6)\nscene.frame_start = 1; scene.frame_end = render_dur\n```\nThis pattern was executed against Blender 4.3.2 and visibly retained the requested source frames through the whole slowed output. Do not replace its negative source-strip frame_start with frame_start=1: frame_offset_start would then move the visible strip later and render black frames.\n\nReturn one JSON object only: {\"code\":\"complete executable Python source\"}.\n\nPrior executable feedback:\nBlender exit=0; output_exists=False. Tail of real Blender log:\nBlender 4.3.2 (hash 32f5fdce0a0a built 2024-12-17 02:14:25)\nTraceback (most recent call last):\n File \"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/scripts/corrected-final-attempt-2.py\", line 53, in <module>\n scene.render.file_format = 'FFMPEG'\n ^^^^^^^^^^^^^^^^^^^^^^^^\nAttributeError: 'RenderSettings' object has no attribute 'file_format'\n\nBlender quit"
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"content": "{\"code\": \"import bpy\\n\\nINPUT_PATH = \\\"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\\\"\\nOUTPUT_PATH = \\\"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4\\\"\\nFPS = 25\\nSTART_SECONDS = 9.0\\nEND_SECONDS = 12.0\\n\\n# Calculate timing parameters\\nstart_frame = int(round(START_SECONDS * FPS))\\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS))))\\nrender_dur = int(round(dur_frames * 1.5))\\n\\n# Clear existing scene data\\nbpy.ops.sequencer.select_all(action='SELECT')\\nbpy.ops.sequencer.delete()\\nscene = bpy.context.scene\\n\\n# Create sequence editor\\nse = scene.sequence_editor_create()\\n\\n# Add movie and audio strips\\nmovie = se.sequences.new_movie(\\n name='clip',\\n filepath=INPUT_PATH,\\n channel=1,\\n frame_start=1 - start_frame\\n)\\nsound = se.sequences.new_sound(\\n name='audio',\\n filepath=INPUT_PATH,\\n channel=2,\\n frame_start=1 - start_frame\\n)\\n\\n# Set trim for both media strips\\nfor strip in (movie, sound):\\n strip.frame_offset_start = start_frame\\n strip.frame_final_duration = dur_frames\\n\\n# Add slowmotion effect to video\\nspeed = se.sequences.new_effect(\\n name='slowmo',\\n type='SPEED',\\n channel=3,\\n frame_start=1,\\n frame_end=1 + dur_frames,\\n seq1=movie\\n)\\nspeed.use_default_fade = False\\nspeed.speed_control = 'MULTIPLY'\\nspeed.speed_factor = 1.0 / 1.5\\n\\n# Extend video duration to match slowed render time\\nmovie.frame_final_duration = render_dur\\n\\n# Add subtitle text with background box\\ntext = se.sequences.new_effect(\\n name='subtitle',\\n type='TEXT',\\n channel=4,\\n frame_start=1,\\n frame_end=1 + render_dur\\n)\\ntext.text = 'BIG BUNNY'\\ntext.location = (0.5, 0.12)\\ntext.align_x = 'CENTER'\\ntext.align_y = 'BOTTOM'\\ntext.use_box = True\\ntext.box_color = (0.0, 0.0, 0.0, 0.6)\\n\\n# Configure render settings\\nscene.render.resolution_x = 854\\nscene.render.resolution_y = 480\\nscene.render.resolution_percentage = 100\\nscene.render.fps = FPS\\nscene.render.fps_base = 1.0\\n\\n# Configure output format\\nscene.render.image_settings.file_format = 'FFMPEG'\\nscene.render.ffmpeg.format = 'MPEG4'\\nscene.render.ffmpeg.codec = 'H264'\\nscene.render.ffmpeg.audio_codec = 'AAC'\\nscene.render.filepath = OUTPUT_PATH\\n\\n# Set render frame range\\nscene.frame_start = 1\\nscene.frame_end = render_dur\\n\\n# Execute render\\nbpy.ops.render.render(animation=True)\"}"
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"content": "Generate a complete Blender 4.3 Python script for this video edit.\n\nInput movie: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\nOutput MP4: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4\nSource FPS: 25\nSource size: 853x480; render at 854x480 (one-pixel even-width pad required by H.264)\nTrim interval: [9.000, 12.000] seconds\nEffects: slow playback so output duration is 1.5 times the trimmed interval; add bottom-centered subtitle BIG BUNNY with a visible semi-transparent dark box.\n\nRequirements:\n- Use bpy and Blender's Video Sequence Editor, including new_movie, new_sound when available, frame_offset_start/frame_final_duration, a SPEED effect, and a TEXT effect.\n- Render exactly 854x480 at 25 fps through Blender to MPEG-4 H.264 with AAC audio.\n- Set the scene frame range to the slowed duration and call bpy.ops.render.render(animation=True).\n- Create only the requested output. Do not invoke ffmpeg, subprocesses, a shell, the network, or read credentials.\n- Use APIs available in Blender 4.3 (scene.sequence_editor_create().sequences).\n- In Blender 4.3, SpeedControlSequence has no use_audio property. Never read or assign use_audio, and do not apply a SPEED effect to the sound strip. A valid movie slow-motion pattern is speed_control='MULTIPLY', speed_factor=1/1.5, and extending the movie/render duration; the sound strip may remain normally trimmed.\n- For the subtitle background, prefer the TEXT strip's use_box=True and box_color=(0,0,0,0.6); do not assume a COLOR strip has text-layout properties.\n\nUse this real-Blender-4.3-validated timing pattern, substituting the supplied paths and interval but preserving the timing relationships exactly:\n```\nFPS = 25\nstart_frame = int(round(START_SECONDS * FPS))\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\nrender_dur = int(round(dur_frames * 1.5))\nse = scene.sequence_editor_create()\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1,\n frame_start=1 - start_frame)\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2,\n frame_start=1 - start_frame)\nfor strip in (movie, sound):\n strip.frame_offset_start = start_frame\n strip.frame_final_duration = dur_frames\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3,\n frame_start=1, frame_end=1 + dur_frames, seq1=movie)\nspeed.use_default_fade = False\nspeed.speed_control = 'MULTIPLY'\nspeed.speed_factor = 1.0 / 1.5\nmovie.frame_final_duration = render_dur\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4,\n frame_start=1, frame_end=1 + render_dur)\ntext.text = 'BIG BUNNY'; text.location = (0.5, 0.12)\ntext.align_x = 'CENTER'; text.align_y = 'BOTTOM'\ntext.use_box = True; text.box_color = (0.0, 0.0, 0.0, 0.6)\nscene.frame_start = 1; scene.frame_end = render_dur\n```\nThis pattern was executed against Blender 4.3.2 and visibly retained the requested source frames through the whole slowed output. Do not replace its negative source-strip frame_start with frame_start=1: frame_offset_start would then move the visible strip later and render black frames.\n\nReturn one JSON object only: {\"code\":\"complete executable Python source\"}.\n\nPrior executable feedback:\nStatic safety/API validation failed: SyntaxError: unmatched ')' (<unknown>, line 11)"
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"content": "Generate a complete Blender 4.3 Python script for this video edit.\n\nInput movie: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\nOutput MP4: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4\nSource FPS: 25\nSource size: 853x480; render at 854x480 (one-pixel even-width pad required by H.264)\nTrim interval: [9.250, 11.000] seconds\nEffects: slow playback so output duration is 1.5 times the trimmed interval; add bottom-centered subtitle BIG BUNNY with a visible semi-transparent dark box.\n\nRequirements:\n- Use bpy and Blender's Video Sequence Editor, including new_movie, new_sound when available, frame_offset_start/frame_final_duration, a SPEED effect, and a TEXT effect.\n- Render exactly 854x480 at 25 fps through Blender to MPEG-4 H.264 with AAC audio.\n- Set the scene frame range to the slowed duration and call bpy.ops.render.render(animation=True).\n- Create only the requested output. Do not invoke ffmpeg, subprocesses, a shell, the network, or read credentials.\n- Use APIs available in Blender 4.3 (scene.sequence_editor_create().sequences).\n- In Blender 4.3, SpeedControlSequence has no use_audio property. Never read or assign use_audio, and do not apply a SPEED effect to the sound strip. A valid movie slow-motion pattern is speed_control='MULTIPLY', speed_factor=1/1.5, and extending the movie/render duration; the sound strip may remain normally trimmed.\n- For the subtitle background, prefer the TEXT strip's use_box=True and box_color=(0,0,0,0.6); do not assume a COLOR strip has text-layout properties.\n\nUse this real-Blender-4.3-validated timing pattern, substituting the supplied paths and interval but preserving the timing relationships exactly:\n```\nFPS = 25\nstart_frame = int(round(START_SECONDS * FPS))\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\nrender_dur = int(round(dur_frames * 1.5))\nse = scene.sequence_editor_create()\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1,\n frame_start=1 - start_frame)\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2,\n frame_start=1 - start_frame)\nfor strip in (movie, sound):\n strip.frame_offset_start = start_frame\n strip.frame_final_duration = dur_frames\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3,\n frame_start=1, frame_end=1 + dur_frames, seq1=movie)\nspeed.use_default_fade = False\nspeed.speed_control = 'MULTIPLY'\nspeed.speed_factor = 1.0 / 1.5\nmovie.frame_final_duration = render_dur\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4,\n frame_start=1, frame_end=1 + render_dur)\ntext.text = 'BIG BUNNY'; text.location = (0.5, 0.12)\ntext.align_x = 'CENTER'; text.align_y = 'BOTTOM'\ntext.use_box = True; text.box_color = (0.0, 0.0, 0.0, 0.6)\nscene.frame_start = 1; scene.frame_end = render_dur\n```\nThis pattern was executed against Blender 4.3.2 and visibly retained the requested source frames through the whole slowed output. Do not replace its negative source-strip frame_start with frame_start=1: frame_offset_start would then move the visible strip later and render black frames.\n\nReturn one JSON object only: {\"code\":\"complete executable Python source\"}.\n"
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"content": "{\"code\": \"import bpy\\n\\n# Configuration\\nINPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov'\\nOUTPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4'\\nFPS = 25\\nSTART_SECONDS = 9.250\\nEND_SECONDS = 11.000\\n\\n# Calculate timing parameters\\nstart_frame = int(round(START_SECONDS * FPS))\\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\\nrender_dur = int(round(dur_frames * 1.5))\\n\\n# Setup scene\\nscene = bpy.context.scene\\nscene.sequence_editor_clear()\\nse = scene.sequence_editor_create()\\n\\n# Add movie and sound strips\\nmovie = se.sequences.new_movie(\\n name='clip',\\n filepath=INPUT_PATH,\\n channel=1,\\n frame_start=1 - start_frame\\n)\\nsound = se.sequences.new_sound(\\n name='audio',\\n filepath=INPUT_PATH,\\n channel=2,\\n frame_start=1 - start_frame\\n)\\n\\n# Trim media strips\\nfor strip in (movie, sound):\\n strip.frame_offset_start = start_frame\\n strip.frame_final_duration = dur_frames\\n\\n# Add speed effect to movie\\nspeed = se.sequences.new_effect(\\n name='slowmo',\\n type='SPEED',\\n channel=3,\\n frame_start=1,\\n frame_end=1 + dur_frames,\\n seq1=movie\\n)\\nspeed.use_default_fade = False\\nspeed.speed_control = 'MULTIPLY'\\nspeed.speed_factor = 1.0 / 1.5\\nmovie.frame_final_duration = render_dur\\n\\n# Add subtitle text\\ntext = se.sequences.new_effect(\\n name='subtitle',\\n type='TEXT',\\n channel=4,\\n frame_start=1,\\n frame_end=1 + render_dur\\n)\\ntext.text = 'BIG BUNNY'\\ntext.location = (0.5, 0.12)\\ntext.align_x = 'CENTER'\\ntext.align_y = 'BOTTOM'\\ntext.use_box = True\\ntext.box_color = (0.0, 0.0, 0.0, 0.6)\\n\\n# Render settings\\nscene.frame_start = 1\\nscene.frame_end = render_dur\\nscene.render.resolution_x = 854\\nscene.render.resolution_y = 480\\nscene.render.resolution_percentage = 100\\nscene.render.fps = FPS\\nscene.render.fps_base = 1.0\\nscene.render.image_settings.file_format = 'MPEG4'\\nscene.render.image_settings.codec = 'H264'\\nscene.render.audio_codec = 'AAC'\\nscene.render.filepath = OUTPUT_PATH\\n\\n# Execute render\\nbpy.ops.render.render(animation=True)\"}"
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"content": "Generate a complete Blender 4.3 Python script for this video edit.\n\nInput movie: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov\nOutput MP4: /Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4\nSource FPS: 25\nSource size: 853x480; render at 854x480 (one-pixel even-width pad required by H.264)\nTrim interval: [9.250, 11.000] seconds\nEffects: slow playback so output duration is 1.5 times the trimmed interval; add bottom-centered subtitle BIG BUNNY with a visible semi-transparent dark box.\n\nRequirements:\n- Use bpy and Blender's Video Sequence Editor, including new_movie, new_sound when available, frame_offset_start/frame_final_duration, a SPEED effect, and a TEXT effect.\n- Render exactly 854x480 at 25 fps through Blender to MPEG-4 H.264 with AAC audio.\n- Set the scene frame range to the slowed duration and call bpy.ops.render.render(animation=True).\n- Create only the requested output. Do not invoke ffmpeg, subprocesses, a shell, the network, or read credentials.\n- Use APIs available in Blender 4.3 (scene.sequence_editor_create().sequences).\n- In Blender 4.3, SpeedControlSequence has no use_audio property. Never read or assign use_audio, and do not apply a SPEED effect to the sound strip. A valid movie slow-motion pattern is speed_control='MULTIPLY', speed_factor=1/1.5, and extending the movie/render duration; the sound strip may remain normally trimmed.\n- For the subtitle background, prefer the TEXT strip's use_box=True and box_color=(0,0,0,0.6); do not assume a COLOR strip has text-layout properties.\n\nUse this real-Blender-4.3-validated timing pattern, substituting the supplied paths and interval but preserving the timing relationships exactly:\n```\nFPS = 25\nstart_frame = int(round(START_SECONDS * FPS))\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\nrender_dur = int(round(dur_frames * 1.5))\nse = scene.sequence_editor_create()\nmovie = se.sequences.new_movie(name='clip', filepath=INPUT_PATH, channel=1,\n frame_start=1 - start_frame)\nsound = se.sequences.new_sound(name='audio', filepath=INPUT_PATH, channel=2,\n frame_start=1 - start_frame)\nfor strip in (movie, sound):\n strip.frame_offset_start = start_frame\n strip.frame_final_duration = dur_frames\nspeed = se.sequences.new_effect(name='slowmo', type='SPEED', channel=3,\n frame_start=1, frame_end=1 + dur_frames, seq1=movie)\nspeed.use_default_fade = False\nspeed.speed_control = 'MULTIPLY'\nspeed.speed_factor = 1.0 / 1.5\nmovie.frame_final_duration = render_dur\ntext = se.sequences.new_effect(name='subtitle', type='TEXT', channel=4,\n frame_start=1, frame_end=1 + render_dur)\ntext.text = 'BIG BUNNY'; text.location = (0.5, 0.12)\ntext.align_x = 'CENTER'; text.align_y = 'BOTTOM'\ntext.use_box = True; text.box_color = (0.0, 0.0, 0.0, 0.6)\nscene.frame_start = 1; scene.frame_end = render_dur\n```\nThis pattern was executed against Blender 4.3.2 and visibly retained the requested source frames through the whole slowed output. Do not replace its negative source-strip frame_start with frame_start=1: frame_offset_start would then move the visible strip later and render black frames.\n\nReturn one JSON object only: {\"code\":\"complete executable Python source\"}.\n\nPrior executable feedback:\nBlender exit=0; output_exists=False. Tail of real Blender log:\nBlender 4.3.2 (hash 32f5fdce0a0a built 2024-12-17 02:14:25)\nTraceback (most recent call last):\n File \"/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/scripts/corrected-final-refinement-1-attempt-1.py\", line 76, in <module>\n scene.render.image_settings.file_format = 'MPEG4'\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nTypeError: bpy_struct: item.attr = val: enum \"MPEG4\" not found in ('BMP', 'IRIS', 'PNG', 'JPEG', 'JPEG2000', 'TARGA', 'TARGA_RAW', 'CINEON', 'DPX', 'OPEN_EXR_MULTILAYER', 'OPEN_EXR', 'HDR', 'TIFF', 'WEBP', 'FFMPEG')\n\nBlender quit"
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"content": "{\"code\": \"import bpy\\n\\n# Configuration\\nINPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/source.mov'\\nOUTPUT_PATH = '/Users/boj/book/ai-agent-book/chapter5/video-edit/validation/runs/exp5-6-real-blender-20260730-055102/final.mp4'\\nFPS = 25\\nSTART_SECONDS = 9.250\\nEND_SECONDS = 11.000\\nRENDER_SIZE = (854, 480)\\n\\n# Calculate timing\\nstart_frame = int(round(START_SECONDS * FPS))\\ndur_frames = max(1, int(round((END_SECONDS - START_SECONDS) * FPS)))\\nrender_dur = int(round(dur_frames * 1.5))\\n\\n# Setup scene\\nscene = bpy.context.scene\\nscene.render.fps = FPS\\nscene.frame_start = 1\\nscene.frame_end = render_dur\\n\\n# Clear default objects\\nbpy.ops.object.select_all(action='SELECT')\\nbpy.ops.object.delete()\\n\\n# Create sequence editor\\nse = scene.sequence_editor_create()\\n\\n# Add movie strip\\nmovie = se.sequences.new_movie(\\n name='clip',\\n filepath=INPUT_PATH,\\n channel=1,\\n frame_start=1 - start_frame\\n)\\nmovie.frame_offset_start = start_frame\\nmovie.frame_final_duration = dur_frames\\n\\n# Add sound strip\\nsound = se.sequences.new_sound(\\n name='audio',\\n filepath=INPUT_PATH,\\n channel=2,\\n frame_start=1 - start_frame\\n)\\nsound.frame_offset_start = start_frame\\nsound.frame_final_duration = dur_frames\\n\\n# Add speed effect to movie\\nspeed = se.sequences.new_effect(\\n name='slowmo',\\n type='SPEED',\\n channel=3,\\n frame_start=1,\\n frame_end=1 + dur_frames,\\n seq1=movie\\n)\\nspeed.use_default_fade = False\\nspeed.speed_control = 'MULTIPLY'\\nspeed.speed_factor = 1.0 / 1.5\\nmovie.frame_final_duration = render_dur\\n\\n# Add subtitle text\\ntext = se.sequences.new_effect(\\n name='subtitle',\\n type='TEXT',\\n channel=4,\\n frame_start=1,\\n frame_end=1 + render_dur\\n)\\ntext.text = 'BIG BUNNY'\\ntext.location = (0.5, 0.12)\\ntext.align_x = 'CENTER'\\ntext.align_y = 'BOTTOM'\\ntext.use_box = True\\ntext.box_color = (0.0, 0.0, 0.0, 0.6)\\n\\n# Render settings\\nscene.render.resolution_x = RENDER_SIZE[0]\\nscene.render.resolution_y = RENDER_SIZE[1]\\nscene.render.resolution_percentage = 100\\nscene.render.image_settings.file_format = 'FFMPEG'\\nscene.render.ffmpeg.format = 'MPEG4'\\nscene.render.ffmpeg.codec = 'H264'\\nscene.render.ffmpeg.audio_codec = 'AAC'\\nscene.render.filepath = OUTPUT_PATH\\n\\n# Render animation\\nbpy.ops.render.render(animation=True)\"}"
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"text": "Independently review these actual rendered keyframes against this edit request:\nCut out the shot of the large white rabbit walking alone in the sunny meadow, slow it to 1.5x duration, and add the subtitle BIG BUNNY along the bottom.\n\nThe target source shot is: the single continuous shot showing the large white rabbit walking alone in a sunny green meadow, after the ONE BIG RABBIT title and before the THREE RODENTS title.\nJudge the pixels, not filenames or claims. Return JSON exactly with:\n{\"pass\":boolean,\"target_present\":boolean,\"irrelevant_content_present\":boolean,\n \"subtitle_visible\":boolean,\"feedback\":\"specific evidence from the frames\"}.\nPass only if all frames show the intended large white rabbit meadow shot without title cards or unrelated scenes and the BIG BUNNY subtitle is visibly overlaid near the bottom.\n"
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"content": "{\"pass\":true,\"target_present\":true,\"irrelevant_content_present\":false,\"subtitle_visible\":true,\"feedback\":\"All frames show the large white rabbit in the sunny green meadow (target present). No title cards ('ONE BIG RABBIT' or 'THREE RODENTS') or unrelated scenes are visible (no irrelevant content). The 'BIG BUNNY' subtitle is clearly overlaid near the bottom in all frames.\"}"
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