Synacor, which provides Internet portals, video players and other content for broadband service companies, filed on Friday with the SEC to raise up to $75 million in an initial public offering. The Buffalo, NY-based company had previously filed for an $86 million offering in August 2007, before withdrawing its IPO in October 2008. Synacor, which was founded in 1998, booked $80 million in sales for the 12 months ended September 30, 2011. The company has yet to determine a ticker or an exchange. BofA Merrill Lynch, Citi, and Stifel Nicolaus Weisel are the lead underwriters on the deal. No pricing terms were disclosed.