More layoffs today at DivX, the publicly traded video codec supplier that recently sued Yahoo over canceling a contract that makes up as much as 20 percent of its revenue. According to a tip that came into our Layoff Tracker, 21 people were let go. I just confirmed that until-now unannounced number with DivX investor relations. It represents just under 10 percent of the workforce in San Diego, where DivX is based (although there were some cuts globally as well).

Its stock is trading under $5, about a third of where it was a year ago.

This follows the resignation of its CTO Markus Moenig earlier this month. And some readers may remember the drama surrounding DivX’s shutdown of its video site Stage6 back in February.

Keep those layoff tips coming.