.. _faq.rst:

###
FAQ
###

**1. Is VVAS open source?**
 
Answer: Yes.

**2. What platforms and OS are compatible with VVAS?**

Answer: VVAS is tested on PetaLinux for embedded platforms and Ubuntu 20.04 for PCIe based platforms. For more information about supported platforms, refer to :doc:`system_requirements`.

**3. Which Vitis AI classes are supported with VVAS SDK?**

Answer: Below classes are supported.
 
    * YOLOV3
    * FACEDETECT
    * CLASSIFICATION
    * SSD
    * REFINEDET
    * TFSSD
    * YOLOV2
    * VEHICLECLASSIFICATION
    * REID
    * SEGMENTATION
    * PLATEDETECT
    * PLATENUM
    * POSEDETECT
    * BCC
    * EFFICIENTDETD2
    * FACEFEATURE
    * FACELANDMARK
    * ROADLINE
    * ULTRAFAST
    * RAWTENSOR
    
For more information refer to :doc:`adding_models`

**4. How do I enable models that are not officially supported?**

Answer: Refer to How to the page :doc:`adding_models`

**5. Does VVAS compatible with lower versions of Vitis AI tools, such as Vitis-AI v2.5?**

Answer: No, it has dependencies on Vitis AI 3.0.

**6. How can I change the model in the pipeline?**

Answer: The model name to be used for inference has to be provided in the JSON file for vvas_xinfer plug-in. For more details, see vvas_xinfer.

**7. Can the model be changed dynamically?**

Answer: while a pipeline is running, the model parameters cannot be modified. To change the model’s parameters, stop the running pipeline, and then update the JSON file and then re-start the pipeline.

**8. What types of input streams does current VVAS SDK support?**

Answer: 

   - H.264, H.265 encoded video streams
   - Raw video frames in NV12, BGR/RGB formats

**9. Whether VVAS SDK supports input of RTSP streaming?**

Answer: Receiving RTSP stream is supported by an open source plugin.

**10. How do I develop software acceleration libraries?**

Answer: Refer to Acceleration :doc:`common/Acceleration-Software-Library-Development`

**11. How to debug VVAS application if there are any issues?**

Answer: Refer to the :doc:`debugging`

**12. How do I compile and prune the model to be used?**

Answer: Refer to Vitis AI 3.0 documentation.

**12. How can we communicate issues while using VVAS SDK ?**

Answer: Please visit technical support page https://support.xilinx.com/s/article/How-do-I-get-support-for-Xilinx-technical-issues?language=en_US

**13. What if I cannot find the information that i am looking for?**

Answer: Contact vvas_discuss@amd.com.

..
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