A man in his 20s was found with gunshot wounds after police were called to Tottenham Green East on February 6, at 4.29am.
He was taken to hospital, where his injuries were assessed as non-life-threatening.
Since then, a 25-year-old man has been arrested on suspicion of attempted murder and bailed as enquires continue.
Police believe that the gun used in this shooting has been connected to four separate shootings in north London.
The footage released shows a man walking away from the scene and police would like to identify him.
Detective Inspector Darren Jones, who is leading the investigation, said: “A man was brutally shot earlier this year in Tottenham. It’s vital that we determine exactly what happened and bring the person or people responsible for this crime to justice.
“If you recognise the man caught on CCTV, we urge you to come forward and speak to us.
“A 25-year-old man has been arrested on suspicion of attempted murder during the course of our investigation and has been released on bail but our enquiries continue.
“I am especially keen to locate the gun used which has now been connected to four separate shootings in north London.
“Any information to help identify the suspect or the location of the gun, could be essential in helping us piece together the circumstances of this incident.”
Anyone with information or relevant doorbell footage is asked to call police on 101, quoting CAD 741/06FEB. Alternatively, contact Crimestoppers anonymously on 0800 555 111.
