LF-STVG-Test

Test data for language-guided spatio-temporal video grounding, with nominal 1-minute, 3-minute, and 5-minute video variants. Each variant contains 1,616 videos and its corresponding annotations. The three variants use the same video filenames, giving 4,848 video files in total. Training data, model weights, and training code are not included in this dataset repository.

Layout

lf-stvg-1min/
  annos/test.json
  video/
lf-stvg-3min/
  annos/test.json
  video/
lf-stvg-5min/
  annos/test.json
  video/
metadata/video_durations.csv

The video/ directories contain the resized video files used by the release. Annotations are JSON objects keyed by video filename. Each entry contains caption, width, height, img_num, st_frame, st_time, ed_time, and bbox. Bounding boxes are stored as [x, y, width, height] in video pixel coordinates. st_frame is one-based; the bounding-box list describes consecutive frames starting at that frame. See the known inconsistency below before using the 5-minute annotations.

Measured durations

The directory names indicate nominal target durations, not a guarantee that every video has that exact duration. All 4,848 files were inspected with FFprobe. Video-stream duration was used when available, falling back to container duration. metadata/video_durations.csv records each file's duration and source.

Variant	Videos	Median (seconds)	Minimum (seconds)	Maximum (seconds)	Within 1 second of nominal duration
1 minute	1,616	60.054	45.125	60.174	1,614
3 minutes	1,616	180.054	105.122	180.281	1,603
5 minutes	1,616	300.050	66.040	300.189	1,581

Known data inconsistency

The original files and annotations are preserved in this upload; no samples have been removed or repaired. In the 5-minute variant, 103_o4xQ-BEa3Ss.mp4 has a video-stream duration of 66.040 seconds (container duration 66.642 seconds). Its annotation declares img_num=1651, but its target box sequence spans zero-based frames 3527 through 3712. These values are inconsistent. The accompanying release loader's bounds check skips this item, so that loader evaluates 1,615 rather than 1,616 items for the 5-minute variant.

Download

hf download Gstar666/LF-STVG-Test --repo-type dataset --local-dir LF-STVG-Test

To download a single variant:

hf download Gstar666/LF-STVG-Test --repo-type dataset --include 'lf-stvg-1min/**' --local-dir LF-STVG-Test