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By Parth
Hello Samsung / Tizen Technical Support Team,
We are observing a playback issue on Samsung Tizen TVs when streaming DRM-protected content that uses a multi-key DRM configuration. We would like to report the issue and request assistance in investigating the behavior on Samsung devices.
DRM Provider: Castlabs
DRM Type: Widevine
Streaming Format: MPEG-DASH (MPD)
Player Environment: Samsung Tizen Application using the Samsung AVPlay / native playback stack.
Content DRM Configuration:
Our content is packaged with a multi-key DRM setup, where different resolution groups use different encryption keys:
Key 1: 360p, 480p, 720p
Key 2: 1080p, 4K
Observed Issue:
Playback starts normally and the video plays correctly at the initial resolution. However, when the adaptive bitrate algorithm triggers a resolution change that requires switching DRM keys, playback fails.
Specifically, the issue occurs in the following scenarios:
When switching from 720p → 1080p or higher
When switching from 1080p → 720p or lower In both cases, the switch requires a DRM key change, and the playback fails shortly after the transition.
Additional Observations:
If we modify the MPD to limit playback to only one key group (for example, only up to 720p or only 1080p and above), playback works correctly without any interruption.
The issue appears only when the player needs to switch between representations encrypted with different keys.
Playback works correctly on other platforms using the same MPD and DRM configuration.
The issue appears specific to Samsung Tizen playback behavior during multi-key DRM key transitions. Device Details (Example Device Where Issue Was Observed):
Model Code: UA32T4380AKXXL Software Version: T-KTS2UABC-2700.6 Platform: Samsung Tizen TV Error Behavior:
Video plays normally for some time and then fails after a resolution change requiring key switch. In some cases playback stops after ~20–30 seconds when adaptive bitrate switching occurs. Request:
Could you please confirm:
Whether multi-key DRM streams with adaptive bitrate switching across keys are fully supported on Samsung Tizen TVs.
If there are specific packaging or DRM license configuration requirements for multi-key playback.
Whether there are known limitations in AVPlay or Tizen DRM handling related to key switching during DASH adaptive playback. We would appreciate any guidance or debugging steps that could help identify the root cause of this issue.
Device Details:
Test Labs Device: Korea (Suwon-TV), NEO QLED 4K, QN55QN80F(2025), Tizen 9.0, QN55QN80FAFXZA
Actual TV: UA32T4380AKXXL (Model Number)
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By Daniel
I’m still dealing with persistent UI lag and bugs on my Samsung S95B, and I’m surprised this issue continues even this year with brand new firmware 1661 and resets.
Symptoms:
Menu interface is slow and laggy, especially in Settings and Home screen.
Scrolling causes stutters or jumps/skips lines in some menus.
Delays when switching inputs, opening apps, or using Smart Hub.
UI gradually becomes less responsive the longer the TV stays on.
What I’ve tried (none of these solved it):
Updated to firmware
Multiple cold boots (hold power button until restart)
Smart Hub reset
Disabled TV Plus, Autorun content, ad services, autoplay previews, etc.
Clean install with only core apps
Factory reset → works for a few days then problem returns
Disconect internet
Only “solution” that works (but temporarily):
Using “Device Care > Memory Cleanup”
It improves UI performance significantly...
BUT only for couple hours
After that, lag and line skipping come back just like before.
So far, this is the only reliable way to temporarily fix the sluggish interface.
Likely cause (based on community feedback):
Tizen OS memory mismanagement (leaks, poor RAM recycling, app bloat)
Possibly related to ad-driven Smart Hub tiles or unoptimized background services
UI lag happens even with no streaming apps open and minimal setup
What I’m asking the community:
Has anyone found a real permanent fix????
Any way to disable Smart Hub completely or force a minimal launcher?
Anyone rollback to a more stable firmware (e.g. 1304, 1430) and fixed this?
Did anyone get Samsung to acknowledge or repair it under warranty?
It’s frustrating to have a flagship OLED 2500$ USD with incredible picture quality, but an TIZEN OS that feels like it’s choking on basic tasks. Hoping for any solutions beyond daily memory cleaning.
On my opinion this is a bad memory using that cause this. Memory because saturated over time.
In all case, Tizen team should redo their homework ASAP.
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By Samsung Newsroom
Samsung Electronics today announced a significant expansion of the Samsung Tizen OS Licensing Program, reinforcing its position as a leading provider of smart TV operating systems.
Tizen OS Continues To Grow As Reliable Smart TV Platform
Following the launch of Samsung Tizen OS 8.0, the licensing program now includes prominent original design manufacturers (ODMs). This marks an important milestone in the evolution of the Tizen ecosystem and demonstrates strong global demand for Samsung’s acclaimed smart TV platform. In its licensing program, Samsung continues to build strategic partnerships with companies that prioritize high-quality products and reliable support throughout the entire value chain.
Additionally, Samsung Tizen OS will be embedded in new TVs from well-known brands in key markets, enhancing its presence across Europe, North and Latin America, and Australia. Notable new additions include EKO and QBELL (Ayonz) in Australia and Europe, RCA (Kayve Groupo) in Mexico, RCA (Treasure Creek) in the United States and Canada, and Axdia in Germany. Many more brands are expected to join in the second half of 2025 as Samsung continues to expand its strategic partnerships into new markets.
“We are proud to expand our RCA TV portfolio across Mexico and Latin America through our partnership with Samsung’s Tizen OS,” said Jonathan Vera, Head of Marketing & Communications, Grupo Kayve. “The Tizen team provides comprehensive technical and marketing support, enabling an agile go-to-market process.”
“Partnering with Samsung on Tizen OS allows us to deliver high-quality and competitive smart TV solutions to our global brand customers,” said Gerard Louis, Chief Operating Officer (COO) at Axdia,
Premium Content and Connectivity at Core of Tizen OS-Powered Smart TVs
Samsung is also dedicated to continuous platform innovation, introducing smart features such as advanced content discovery, integration with Samsung TV Plus for FAST channel services, cloud gaming capabilities via Samsung Gaming Hub, and seamless multi-device connectivity through SmartThings. These enhancements ensure that licensees benefit not only from proven technology but also from a forward-looking platform that adapts to evolving consumer expectations.
To further differentiate Tizen-powered TVs at retail, Samsung offers tailored marketing kits and digital content toolkits for each region, enabling partners to highlight key attributes such as premium content access, fast performance, and smart connectivity—all backed by Samsung’s robust global brand credibility.
As the Tizen OS Licensing Program evolves to meet the needs of global partners, Samsung is broadening regional coverage, introducing more affordable hardware solutions, and enhancing app availability worldwide. Moreover, partners can gain access to Samsung’s specialized R&D support to confidently bring Tizen-powered smart TVs to market.
“Tizen OS is recognized for its performance, reliability, and innovation,” said Jooyoung Kim, Vice President at Samsung Electronics. “This year, we are focused on expanding our licensing program and creating diverse collaboration strategies for our key partners. We are serious about growing our global partner network and enhancing the ecosystem. By offering expanded regional support, an enriched app ecosystem, and tailored marketing resources, we aim to deliver even greater value to consumers worldwide.”
With Tizen OS extending beyond Samsung’s own TV offerings, the company remains steadfast in its commitment to delivering an open, robust, and premium smart TV experience for consumers around the world.
View the full article
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By Samsung Newsroom
April 2025 New & Updated Features of Samsung Health Accessory SDK
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The SDK consolidates scattered user health data from various devices into Samsung Health, enabling more precise, data-driven health management and ultimately delivering greater value to our users. Enrich user health journey with the new and improved Accessory SDK.
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