# Qualcomm IM SDK release 2.0 RC2 ## Release information Table : Supported platforms and reference kits | SoC platforms | Reference kits | | --- | --- | | QCS6490 | | | QCS5430 | | | Qualcomm Dragonwing^TM^ IQ-9075 | | | Qualcomm Dragonwing^TM^ IQ-8275 | Qualcomm Dragonwing^TM^ IQ-8275 Beta Evaluation Kit (EVK) | ## Contents of the release The contents of the Qualcomm IM SDK release include: - Recipes for building the individual components: - Qualcomm^®^ Intelligent Multimedia SDK (IM SDK) - Lite Runtime (LiteRT) - Qualcomm^®^ Neural Processing SDK - Qualcomm^®^ AI Engine direct SDK To get started with the Qualcomm IM SDK, see [Qualcomm Intelligent Multimedia (IM SDK) Quick Start Guide](https://docs.qualcomm.com/doc/80-80021-51). ## Limitations The following are the known limitations in the Qualcomm IM SDK release: - Parallel decode or encode sessions aren’t supported. - In config1, LiteRT IM SDK frameworks don’t support the GPU delegate. - Frame drops are observed in daisychain detection‑pose usecases when the pose detection load (people per frame × model inference time) exceeds the per‑frame time limit (33 ms for 30 fps). - Reverse playback is limited to video streams with a GOP length that fits within the buffer limitations of the video driver (<= 26). - For Dragonwing IQ-9075 and Dragonwing IQ-8275: > > > - Random corruption is observed at the beginning of playback for low-resolution (480p) NV12 UBWC-compressed streams. > - Stability issues are observed when running multibatch ML use cases. - The `waylandsink` plugin doesn’t support displaying windows at custom screen coordinates. - When using the `qtimlpostprocess` plugin for postprocessing, a display latency occurs after approximately 30 minutes of running ML use cases on a camera stream. - Use cases with files having dynamic resolution change (DRC) may fail. This issue occurs because the video driver allocates buffers that are only partially accessible to the GPU driver. - `qtiobjtracker` exhibits non‑linear execution‑time growth during extended runs, which can act as a performance bottleneck. - Classification Daisychain pipeline use cases aren’t supported. - The Qualcomm IM SDK in a docker container isn’t supported in this release. - The audio record pipeline runs, but no audio is present in the captured file. - Video encode doesn’t work for resolutions lower than 4K with the UBWC (NV12\_Q08C) format. - Pipelines that use GPU-based plugins followed by the encoder freeze. - The encoder supports only framerates from 10/1 to 120/1 in the order of 10/1. Odd framerates from containers, such as 30000/1001, aren’t supported. - For some models, certain operations aren’t supported in the QNN HTP backend. When a CPU fallback is available, the model executes but with degraded performance. If no fallback exists, model execution fails. - Smart encode with a camera source isn’t supported because, in camera multistream, at least one stream must be in NV12\_Q08C format, and there is a known issue with the encoder for this format. - A known issue exists in `qtivcomposer` related to GAP buffer handling. This affects use cases where `qtivsplit` is used (for example, daisy-chain ML), as `qtivsplit` can generate GAP buffers. - Across the SNPE, QNN, and LiteRT frameworks, Super Resolution models produce blurred output. - Across the SNPE, QNN, and LiteRT frameworks, segmentation models don’t function correctly. - In the LiteRT framework, multistream use cases aren’t supported. - In the LiteRT framework, quantized models run at low FPS. - In Config3 and Config4, the camera service fails to start after CAMX overlay installation. For more information about overlay configurations, see [Use overlay configurations to derive image recipes](https://docs.qualcomm.com/doc/80-80021-150/topic/overlay_configurations.html). - The `gst-pipeline-app` utility isn’t available. - In Config2, sHDRv2 and sHDRv3 camera streams aren’t supported. - On Dragonwing IQ-615, the encoder plugin supports only resolutions that are multiples of 16. Note The following plugins are deprecated. Use the corresponding replacement plugins. | Deprecated plugins | Replacement plugins | | --- | --- | | `qtioverlay` | `qtivoverlay` | | | `qtimlpostprocess` | ## Related documents - [Qualcomm Intelligent Multimedia SDK (IM SDK) Reference](https://docs.qualcomm.com/doc/80-80021-50/topic/qimsdk_landing_page.html) - [Qualcomm Intelligent Multimedia (IM SDK) Quick Start Guide](https://docs.qualcomm.com/doc/80-80021-51/topic/qmi-sdk-qsg-landing-page.html) - [Qualcomm Dragonwing RB3 Gen 2 Development Kit Guide](https://docs.qualcomm.com/doc/80-80021-251/topic/landing-page.html) - [Qualcomm Dragonwing IQ-9075 Evaluation Kit user guide – Linux](https://docs.qualcomm.com/doc/80-80021-261/topic/iq9-ug-landing-page.html) - [Qualcomm Linux Build Guide](https://docs.qualcomm.com/doc/80-80021-254/topic/build_landing_page.html) - [Qualcomm Linux Migration Guide](https://docs.qualcomm.com/doc/80-80021-150/topic/landing-page.html) Last Published: Mar 25, 2026 [Next Topic Qualcomm IM SDK release 2.0 RC1](https://docs.qualcomm.com/bundle/publicresource/80-80021-52/topics/qim-sdk-release-2-0.md)