System Info

Lerobot 0.4.3, Ubuntu 22.04, Python 3.12.8, numpy==2.2.6, torch==2.7.1, I did a clean `uv pip install -e .` on c55fbe1b.

Information

• One of the scripts in the examples/ folder of LeRobot
• My own task or dataset (give details below)

Reproduction

Running the following script creates an example lerobot dataset and splits it. However, the frames in the resulting videos will not have the corrent number of frames.

Accessing one of the split datasets' video frames will result in Invalid frame index=2153 for streamIndex=0; must be less than 2153.

test_lerobot_split.py

Expected behavior

The meta data and the videos should agree on the number of frames.

I will post a fix shortly.