Youtube commentors offer these translations:
Basically: last night several man in military uniforms with arabic accents attacked this building and several others in the same street. They broke the door, and made their way into the building all the way to the rooftop, and broke the a/c units, throwing some of them to the street. They also broke the cars in the street.

6.18pm:
A reliable twitterer says that a group of mourners went to Neda Agha-Soltan's grave today but were turned back by security forces, who consisted of the usual mix of riot police, plain clothes cops and basiji militiamen. The twitter says they detained people who were carrying green signs or refused an order to disperse.

6.12pm:
Our video production team knit together this montage of amateur footage from yesterday's protests. Amateur videos of clashes between protesters and the authorities in Tehran continue to be posted online

5.38pm:
Our correspondent in Tehran says the country was calm today relative to the unrest of this week and last because there is a very large entrance exam today for the country’s public universities. One and a half million students participated, he said.

Meanwhile, the correspondent says credible rumours continue to fly that the government has brought in Arabs to bolster the security forces. Yesterday on this blog we posted an interview with a young volunteer militiaman who said the regime had brought in volunteers from Lebanon, where Iran has ties to the Islamist Hezbollah movement.