My only worry with decentralised video/image platforms is what happens when/if child pornography is uploaded to it? A centralised authority can act on reports to expunge content, but on an immutable decentralised ledger it becomes much harder to do. I suppose witnesses/nodes could all come to an agreement to remove the content but there would need to be some near infallible method of doing so that wouldn't be able to be abused to remove other content that breaks no rules/laws.