Concurrent Stream Limiting (CSL) can be used to prevent piracy; bandwidth draining activity; or to fulfil a ‘limited device number’ business model.
DRMtoday’s Concurrent Stream Limiting feature is a useful tool for streaming service providers within the DRMtoday user management interface, enabling you to deny license renewal requests (or the license deliveries themselves) if too many concurrent streams are used by a single given user.
This can also be combined with a subscriber watermarking solution (for example, FriendMTS’ ASiD), allowing you to pinpoint non-subscribers and stop streaming piracy within minutes on live or video-on-demand streams.
How Concurrent Stream Limiting Works?
Streams are tracked by a token given in the license response or createCslSession calls, except in cases where the user device sends license requests for each key in parallel at the start of the stream. In these cases the token won’t be present but a common identifier for similar streams can be used as part of an algorithm to track these instances.
Using the token or common identifier, multiple concurrent streams can be identified and time-limited license renewals can be declined using set parameters or manual changes in the user management interface.
Recent updates
RePro Stream & STARDUSTmark: Bringing forensic accountability to remote film and TV production
Challenge: Securing distributed production Modern productions rely on teams who are rarely in the same...
DRM and the modern content security stack – IBC 2026
How do different content security layers work together to protect premium video? Watch the full...
IAMT Studio interview with Christophe Kind at IBC 2026
How can media companies protect their streams, grow advertising revenue, and help audiences trust what...