Captioning Pipeline

import dreamlake as dl
from my_vlm import describe  # user's own VLM
 
video = dl.load_video("v-BV1bW411n7fY9x01")
 
with dl.Prefix(space="robotics@alice", prefix="/2026/04/run-042"):
    # Create a text track for captions
    track = dl.text_track(path="captions/scene-description")
 
    # Caption every 2s segment
    chunks = video.chunk(2.0)
    for chunk in chunks:
        caption = describe(chunk[0].image)
        track.add(caption, source=chunk)
 
    # Upload to DreamLake
    track.flush()
    print(f"Uploaded {track.count} captions")