GPAC GSoC page: https://summerofcode.withgoogle.com/organizations/6481702784335872/
Subjects: http://gpac.io/jobs/google-summer-of-code-ideas/
The timeline to see the subject and apply is quite short (25 March for student application deadline): https://developers.google.com/open-source/gsoc/timeline
Please pass along the message. GSoC is a good opportunity for projects to improve and find contributors!
If you have any question, please contact gsoc@gpac.io.