Documento original do Skill
Renderizado do repositório de origem, preservando títulos, exemplos, código, tabelas, links e imagens.
Perfect Loop Camera Animation
A seamless 360-degree turntable where the last frame connects perfectly to the first frame, creating an infinite loop. Ideal for website backgrounds, social media, and product page embeds.
When to Use
- User wants a "looping" or "seamless" animation
- User says "perfect loop", "infinite loop", "GIF", "looping turntable"
- Website product embed, social media loop
Parameters
| Parameter | Default | Description |
|---|---|---|
duration | 5 | Video length in seconds |
fps | 24 | Frames per second |
camera_distance | 4.0 | Distance from object |
camera_height | 2.0 | Camera height |
camera_lens | 50 | Focal length |
Flow
Step 1: Set Up Camera Rig
python
import bpy, math
bpy.ops.object.empty_add(type='PLAIN_AXES', location=(0, 0, 0))
tgt = bpy.context.active_object
tgt.name = 'PerfectLoopTarget'
bpy.ops.object.camera_add(location=(0, -CAMERA_DISTANCE, CAMERA_HEIGHT))
cam = bpy.context.active_object
cam.name = 'PerfectLoopCam'
cam.data.lens = CAMERA_LENS
trk = cam.constraints.new(type='TRACK_TO')
trk.target = tgt
trk.track_axis = 'TRACK_NEGATIVE_Z'
trk.up_axis = 'UP_Y'
bpy.ops.object.select_all(action='DESELECT')
cam.select_set(True)
tgt.select_set(True)
bpy.context.view_layer.objects.active = tgt
bpy.ops.object.parent_set(type='OBJECT', keep_transform=True)
bpy.context.scene.camera = camStep 2: Animate Seamless Loop
Critical: Keyframe 360 degrees at frame N+1 (one past the last rendered frame). This way frame N and frame 1 are adjacent in the loop, not duplicated.
python
TOTAL_FRAMES = DURATION * FPS # 120
scene = bpy.context.scene
scene.frame_start = 1
scene.frame_end = TOTAL_FRAMES # render 1-120
scene.render.fps = FPS
tgt.rotation_euler = (0, 0, 0)
tgt.keyframe_insert(data_path='rotation_euler', frame=1)
# 360 at frame 121 — frame 121 is NOT rendered, but ensures
# frame 120 is one step before frame 1, creating seamless loop
tgt.rotation_euler = (0, 0, math.radians(360))
tgt.keyframe_insert(data_path='rotation_euler', frame=TOTAL_FRAMES + 1)
# LINEAR interpolation is CRITICAL for perfect loop
action = tgt.animation_data.action
strip = action.layers[0].strips[0]
for cb in strip.channelbags:
for fc in cb.fcurves:
for kp in fc.keyframe_points:
kp.interpolation = 'LINEAR'Step 3: Render + Encode
bash
ffmpeg -y -framerate 24 \
-i "~/Desktop/Blender Videos/perfect_loop_frames/%04d.png" \
-c:v prores_ks -profile:v 4444 -pix_fmt yuva444p10le \
"~/Desktop/Blender Videos/perfect_loop.mov"Critical Notes
- LINEAR interpolation only — BEZIER will cause the loop to stutter at the seam
- Keyframe at N+1: Place the 360-degree keyframe one frame PAST the render range
- No camera movement: Camera distance, height, and lens must be static (no keyframes on these)
- Verify loop: Play the video on repeat to confirm seamless transition
- Good for encoding to looping formats: GIF, WebM, or MP4 with
-loop 0
