Videos could NOT play because AV1 decoding is not available on your browser.

• If iPhone: It is supported with A17 chip or higher.
• If Mac with Safari: It is supported on most browsers except Safari with M1 chip or higher and on Safari with M3 chip or higher.
• Other: Contact the maintainers on LeRobot discord channel: https://discord.com/invite/s3KuuzsPFb