The sentence is grammatically correct, but the phrase "I slept on this live video" is a bit unclear. It could mean that the speaker watched the live video while dozing off or that they overlooked or failed to pay attention to it.
To clarify the meaning, you could rephrase it in a few different ways, such as:
1. "I barely paid attention to the live video last night; it was chaotic."
2. "I dozed off while watching the chaotic live video last