--- name: pipeline-edicion-video-blender-vse description: Automatiza la edición de vídeo en el Video Sequence Editor de Blender mediante scripts Python ejecutados desde la terminal. Permite ensamblar clips, añadir transiciones, aplicar efectos, superponer texto y renderizar el resultado sin abrir la interfaz gráfica. license: Apache-2.0 metadata: id: 05e8a79a slug: pipeline-edicion-video-blender-vse titulo: "Pipeline de edición de vídeo con Blender VSE" servicio: Video categoria_recurso: Automatizacion tipo: automatizacion nivel: avanzado idioma: es idioma_original: en acceso: gratis precio_eur: 0 plataformas: [Blender, Python, FFmpeg, Linux, macOS, Windows] dependencias: [Blender 3.0+, bpy, FFmpeg] licencia: { spdx: Apache-2.0, redistribuible: true, uso_comercial: true } fuente: repo: TerminalSkills/skills url: https://github.com/TerminalSkills/skills/tree/main/skills/blender-vse-pipeline commit: 77fa015 autor: TerminalSkills nombre_original: blender-vse-pipeline duplicados_en: [] seguridad: { veredicto: seguro, riesgo: bajo, escaneado: "2026-06-14", motor: "grep-estatico+auditor-llm" } ficha: que_hace: "Genera pipelines de edición de vídeo headless en Blender VSE con Python." como_lo_hace: "Usa la API bpy para crear y orquestar strips de vídeo, audio e imagen, aplicar efectos y renderizar en segundo plano desde la línea de comandos." content_hash: "05e8a79a54c3112404e36f27752431655b3943743ec80e28778b0e51c52d2b50" version: 1.0.0 --- # Blender VSE Pipeline ## Overview Automate video editing with Blender's Video Sequence Editor (VSE) using Python. Add and arrange strips (video, image, audio), create transitions, apply effects, assemble edits from file lists, and render final video — all headlessly from the terminal. ## Instructions ### 1. Initialize the sequence editor ```python import bpy scene = bpy.context.scene if not scene.sequence_editor: scene.sequence_editor_create() sequences = scene.sequence_editor.sequences scene.frame_start = 1 scene.frame_end = 250 scene.render.fps = 24 ``` ### 2. Add strips ```python # Video strip strip = sequences.new_movie(name="Clip_A", filepath="/path/to/video.mp4", channel=1, frame_start=1) strip.frame_offset_start = 24 # trim start (skip 1 sec) strip.frame_offset_end = 48 # trim end # Image strip (hold for duration) img = sequences.new_image(name="Title_Card", filepath="/path/to/title.png", channel=2, frame_start=1, fit_method='FIT') img.frame_final_duration = 72 # 3 seconds at 24fps # Image sequence import glob img_files = sorted(glob.glob("/path/to/frames/frame_*.png")) img_seq = sequences.new_image(name="Render", filepath=img_files[0], channel=1, frame_start=1) for f in img_files[1:]: img_seq.elements.append(f.split("/")[-1]) # Audio strip with fade in/out audio = sequences.new_sound(name="Music", filepath="/path/to/music.mp3", channel=3, frame_start=1) audio.volume = 0.0 audio.keyframe_insert(data_path="volume", frame=1) audio.volume = 0.6 audio.keyframe_insert(data_path="volume", frame=24) audio.volume = 0.6 audio.keyframe_insert(data_path="volume", frame=audio.frame_final_end - 48) audio.volume = 0.0 audio.keyframe_insert(data_path="volume", frame=audio.frame_final_end) ``` ### 3. Transitions and effects ```python # Cross dissolve (strips must overlap and be on different channels) cross = sequences.new_effect( name="CrossDissolve", type='GAMMA_CROSS', channel=3, frame_start=clip_a.frame_final_end - 24, frame_end=clip_b.frame_final_start + 24, seq1=clip_a, seq2=clip_b ) # Color strip (solid background) color = sequences.new_effect(name="BlackBG", type='COLOR', channel=1, frame_start=1, frame_end=48) color.color = (0, 0, 0) # Text overlay text = sequences.new_effect(name="Title", type='TEXT', channel=4, frame_start=1, frame_end=72) text.text = "My Video Title" text.font_size = 80 text.color = (1, 1, 1, 1) text.location = (0.5, 0.5) text.align_x = 'CENTER' text.align_y = 'CENTER' text.use_shadow = True # Speed control speed = sequences.new_effect(name="SlowMo", type='SPEED', channel=5, frame_start=clip_a.frame_final_start, frame_end=clip_a.frame_final_end, seq1=clip_a) speed.speed_factor = 0.5 # Transform (position, scale, rotation) transform = sequences.new_effect(name="Transform", type='TRANSFORM', channel=5, frame_start=1, frame_end=100, seq1=clip_a) transform.scale_start_x = 1.2 transform.scale_start_y = 1.2 ``` ### 4. Strip modifiers for color correction ```python strip = sequences["Clip_A"] bc = strip.modifiers.new(name="BrightContrast", type='BRIGHT_CONTRAST') bc.bright = 0.1 bc.contrast = 0.15 cb = strip.modifiers.new(name="ColorBalance", type='COLOR_BALANCE') cb.color_balance.lift = (0.95, 0.95, 1.0) cb.color_balance.gain = (1.1, 1.05, 0.95) ``` ### 5. Render the final video ```python scene = bpy.context.scene scene.render.filepath = "/tmp/final_edit.mp4" 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.ffmpeg.audio_bitrate = 192 scene.render.resolution_x = 1920 scene.render.resolution_y = 1080 # Auto-set frame range from strips all_strips = scene.sequence_editor.sequences_all if all_strips: scene.frame_start = min(s.frame_final_start for s in all_strips) scene.frame_end = max(s.frame_final_end for s in all_strips) bpy.ops.render.render(animation=True) ``` ## Examples ### Example 1: Assemble an edit from a shot list **User request:** "Build a timeline from video clips with crossfades between them" ```python import bpy, os clips = ["/path/to/shot_01.mp4", "/path/to/shot_02.mp4", "/path/to/shot_03.mp4", "/path/to/shot_04.mp4"] crossfade_frames = 12 scene = bpy.context.scene scene.render.fps = 24 if not scene.sequence_editor: scene.sequence_editor_create() sequences = scene.sequence_editor.sequences current_frame = 1 prev_strip = None for i, clip_path in enumerate(clips): if prev_strip and crossfade_frames > 0: current_frame -= crossfade_frames strip = sequences.new_movie( name=os.path.splitext(os.path.basename(clip_path))[0], filepath=clip_path, channel=1 + (i % 2), frame_start=current_frame ) if prev_strip and crossfade_frames > 0: sequences.new_effect(name=f"Fade_{i}", type='GAMMA_CROSS', channel=3, frame_start=current_frame, frame_end=current_frame + crossfade_frames, seq1=prev_strip, seq2=strip) current_frame += strip.frame_final_duration prev_strip = strip scene.frame_start = 1 scene.frame_end = current_frame ``` ### Example 2: Batch add text overlays from data **User request:** "Add text titles at specific timecodes" ```python import bpy titles = [("Introduction", 0, 3), ("Chapter 1", 15, 4), ("Chapter 2", 120, 4), ("Conclusion", 300, 5)] fps = bpy.context.scene.render.fps sequences = bpy.context.scene.sequence_editor.sequences for text_content, start_sec, dur_sec in titles: start_frame = int(start_sec * fps) + 1 text = sequences.new_effect(name=text_content[:20], type='TEXT', channel=5, frame_start=start_frame, frame_end=start_frame + int(dur_sec * fps)) text.text = text_content text.font_size = 60 text.color = (1, 1, 1, 1) text.location = (0.5, 0.15) text.align_x = 'CENTER' text.use_shadow = True ``` ## Guidelines - Always call `scene.sequence_editor_create()` if `scene.sequence_editor` is `None`. - Use `sequences.new_movie()`, `new_image()`, `new_sound()`, `new_effect()`. Avoid `bpy.ops.sequencer.*` in background mode. - Cross dissolves need strips on different channels with overlapping frames. Alternate channels (1, 2, 1, 2). - `frame_offset_start/end` trims content without moving the strip. `frame_start` moves it on the timeline. - For audio fades, keyframe `strip.volume` — no built-in fade effect in VSE. - Render long edits as image sequences first, then assemble with ffmpeg. - Set resolution to match source footage to avoid scaling artifacts. - VSE processes channels bottom-to-top — higher channels layer on top.