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Concurrent Playback Prevention

Notice

This document is a machine-translated draft and is currently undergoing review. Some content may be inaccurate or differ from the original Korean version. For the most precise information, refer to the Korean documentation.

Concurrent playback prevention is a core security feature that protects copyright and blocks unauthorized account sharing by preventing a single account (user ID) from consuming content simultaneously across multiple devices.

This feature operates based on two main mechanisms.

  • Device whitelist: Allows playback only on pre-authenticated devices.
  • Session concurrency control: Limits the number of playback sessions that can be active at the same time.

Kollus VOD maps the customer user ID(client_user_id) and player ID (unique device identifier) to verify the playback environment in real time. Customers can flexibly manage their service through the Kollus VOD console by immediately force-terminating sessions suspected of unauthorized sharing or resetting the list of registered devices.

Feature activation

The concurrent playback prevention feature is disabled by default. To activate this feature, refer to the Concurrent playback prevention policy and contact your Account Manager(biz@catenoid.net) or Technical Support(tech_support@catenoid.net).

⚠️ Pre-checklist​

  • Device quantity policy: The number of devices that can play simultaneously per account can be set to a maximum of 10. Differential application according to the operating environment (PC, mobile, etc.) can be arranged through separate consultation.
  • Player compatibility (See Also: Kollus Player types)
    • Kollus Web Player
    • Kollus HTML5 Player for PC
    • Kollus App Player

Concurrent playback prevention policy​

Kollus VOD provides a total of 4 powerful security options to suit your business model. Policy changes are reflected in real time as soon as they are saved in the Kollus VOD console.

PolicyDescription
Do not useSimultaneous playback on multiple devices is allowed without restriction.
One device at a timeWithout a device registration process, playback is only available on the last device that attempted to play.
Concurrent playback on registered devicesRegistered devices can freely play simultaneously.
One registered device at a timePlayback is only available on one device among the registered devices.

Registered device limit​

Set the number of devices allowed per account under Kollus VOD console > [Settings] > [Concurrent playback prevention] > [Registered device limit].

  • Range: You can specify a minimum of 1 device to a maximum of 10 devices per user ID.
  • Integrated device management: PCs, mobile phones, tablets, and other devices are managed together as a total count without distinction.
  • Differential policy: If you want to set individual limits by device type, such as '1 PC + 2 mobile devices', contact your Account Manager(biz@catenoid.net) or Technical Support(tech_support@catenoid.net).

Concurrent playback management​

Click Kollus VOD console > [Settings] > [Concurrent playback prevention] > [Go to Concurrent Playback Management] to access the management page.

View and download Prevention log​

In the [Prevention log] tab, you can view the concurrent playback prevention log from the past 3 months and download it as a CSV file.

Register allowed devices​

Click [Register allowed devices] in the [Prevention log] tab to immediately unblock the device and add it to the allowed list.

Manage allowed devices​

If a user changes or loses their device, the customer administrator can click [Unregister] or [Unbind all] in the [Device management] tab to delete the existing device information and free up space to register a new device.

Force-terminate sessions in real time​

You can monitor the information of all currently active sessions in the playing sessions tab. If a specific account is suspected of playing simultaneously from multiple locations, click [End session] to immediately stop the playing video and invalidate access rights.

How to check the player ID​

When receiving device information from users and managing it manually, guide them to check their unique ID through the following paths.

Operating SystemWhere to find
WindowsSystem tray (bottom right) > Right-click the Kollus Agent icon > [Info]
macOS
  • Kollus App Player: Press the [F5] key while the player is running to display the ID in the player title
  • Kollus HTML5 Player (Agent installed): [Settings (gear icon)] at the bottom of the player > [Player info (i icon)]
iOSKollus Player app > [Settings] > [Device information]
AndroidKollus Player app > [Settings] > [Device information]