# Python samples fail when running on sample inputs **URL:** \ **Category:** DeepStream SDK\ **Created:** [June 15, 2020, 12:04pm UTC](https://forums.developer.nvidia.com/t/python-samples-fail-when-running-on-sample-inputs/127866 "2020-06-15T12:04:48Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![ruslan](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@ruslan](https://forums.developer.nvidia.com/u/ruslan)\ **Post date:** [June 15, 2020, 12:04pm UTC](https://forums.developer.nvidia.com/t/python-samples-fail-when-running-on-sample-inputs/127866/1 "2020-06-15T12:04:48Z")
**• NVIDIA V100** **• DeepStream5.0** **• 7.0.0-1+cuda10.2** **• 440.64** Trying to run deepstream\_test\_3.py and deepstream\_imagedata-multistream.py inside official docker image, but getting the following error: ``` Error: gst-stream-error-quark: Internal data stream error. (1): gstnvinfer.cpp(1946): gst_nvinfer_output_loop (): /GstPipeline:pipeline0/GstNvInfer:primary-inference: streaming stopped, reason not-negotiated (-4) ``` Full output from deepstream\_test\_3.py (deepstream\_imagedata-multistream.py is similar): ``` # python3 deepstream_test_3.py file:///opt/nvidia/deepstream/deepstream-5.0/samples/streams/sample_1080p_h264.mp4Creating Pipeline Creating streamux Creating source_bin 0 Creating source bin source-bin-00 Creating Pgie Creating tiler Creating nvvidconv Creating nvosd Creating EGLSink Warn: 'threshold' parameter has been deprecated. Use 'pre-cluster-threshold' instead. Adding elements to Pipeline Linking elements in the Pipeline Now playing... 1 : file:///opt/nvidia/deepstream/deepstream-5.0/samples/streams/sample_1080p_h264.mp4 Starting pipeline 0:00:17.886642184 6470 0x1f808c0 INFO nvinfer gstnvinfer.cpp:602:gst_nvinfer_logger: NvDsInferContext[UID 1]: Info from NvDsInferContextImpl::buildModel() [UID = 1]: Trying to create engine from model files Warning, setting batch size to 1. Update the dimension after parsing due to using explicit batch size. INFO: ../nvdsinfer/nvdsinfer_func_utils.cpp:37 [TRT]: Reading Calibration Cache for calibrator: EntropyCalibration2 INFO: ../nvdsinfer/nvdsinfer_func_utils.cpp:37 [TRT]: Generated calibration scales using calibration cache. Make sure that calibration cache has latest scales. INFO: ../nvdsinfer/nvdsinfer_func_utils.cpp:37 [TRT]: To regenerate calibration cache, please delete the existing one. TensorRT will generate a new calibration cache. INFO: ../nvdsinfer/nvdsinfer_func_utils.cpp:37 [TRT]: Some tactics do not have sufficient workspace memory to run. Increasing workspace size may increase performance, please check verbose output. INFO: ../nvdsinfer/nvdsinfer_func_utils.cpp:37 [TRT]: Detected 1 inputs and 2 output network tensors. 0:03:00.120411592 6470 0x1f808c0 INFO nvinfer gstnvinfer.cpp:602:gst_nvinfer_logger: NvDsInferContext[UID 1]: Info from NvDsInferContextImpl::buildModel() [UID = 1]: serialize cuda engine to file: /opt/nvidia/deepstream/deepstream-5.0/samples/models/Primary_Detector/resnet10.caffemodel_b1_gpu0_int8.engine successfully INFO: ../nvdsinfer/nvdsinfer_model_builder.cpp:685 [FullDims Engine Info]: layers num: 3 0 INPUT kFLOAT input_1 3x368x640 min: 1x3x368x640 opt: 1x3x368x640 Max: 1x3x368x640 1 OUTPUT kFLOAT conv2d_bbox 16x23x40 min: 0 opt: 0 Max: 0 2 OUTPUT kFLOAT conv2d_cov/Sigmoid 4x23x40 min: 0 opt: 0 Max: 0 0:03:01.240735837 6470 0x1f808c0 INFO nvinfer gstnvinfer_impl.cpp:311:notifyLoadModelStatus: [UID 1]: Load new model:dstest3_pgie_config.txt sucessfully Decodebin child added: source Decodebin child added: decodebin0 Decodebin child added: qtdemux0 Decodebin child added: multiqueue0 Decodebin child added: h264parse0 Decodebin child added: capsfilter0 Decodebin child added: aacparse0 Decodebin child added: avdec_aac0 Decodebin child added: nvv4l2decoder0 In cb_newpad gstname= video/x-raw features= In cb_newpad gstname= audio/x-raw Frame Number= 0 Number of Objects= 6 Vehicle_count= 4 Person_count= 2 0:03:03.598808665 6470 0x175c190 WARN nvinfer gstnvinfer.cpp:1946:gst_nvinfer_output_loop: error: Internal data stream error. 0:03:03.598828499 6470 0x175c190 WARN nvinfer gstnvinfer.cpp:1946:gst_nvinfer_output_loop: error: streaming stopped, reason not-negotiated (-4) Error: gst-stream-error-quark: Internal data stream error. (1): gstnvinfer.cpp(1946): gst_nvinfer_output_loop (): /GstPipeline:pipeline0/GstNvInfer:primary-inference: streaming stopped, reason not-negotiated (-4) Frame Number= 1 Number of Objects= 5 Vehicle_count= 3 Person_count= 2 Exiting app Frame Number= 2 Number of Objects= 5 Vehicle_count= 3 Person_count= 2 Frame Number= 3 Number of Objects= 6 Vehicle_count= 4 Person_count= 2 ``` ---
**Author:** ![Amycao](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/amycao/32/11342_2.png) [@Amycao](https://forums.developer.nvidia.com/u/Amycao)\ **Post date:** [June 16, 2020, 3:04am UTC](https://forums.developer.nvidia.com/t/python-samples-fail-when-running-on-sample-inputs/127866/3 "2020-06-16T03:04:34Z")
Hi V100 is compute card, you could change sink = Gst.ElementFactory.make(“nveglglessink”, “nvvideo-renderer”) to sink = Gst.ElementFactory.make(“fakesink”, “nvvideo-renderer”) ---
**Author:** ![ruslan](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@ruslan](https://forums.developer.nvidia.com/u/ruslan)\ **Post date:** [June 16, 2020, 5:04pm UTC](https://forums.developer.nvidia.com/t/python-samples-fail-when-running-on-sample-inputs/127866/4 "2020-06-16T17:04:03Z")
Hi, thanks @Amycao, its working now! ---
**Author:** ![TomNVIDIA](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/tomnvidia/32/14181_2.png) [@TomNVIDIA](https://forums.developer.nvidia.com/u/TomNVIDIA)\ **Post date:** [October 12, 2021, 4:17pm UTC](https://forums.developer.nvidia.com/t/python-samples-fail-when-running-on-sample-inputs/127866/6 "2021-10-12T16:17:34Z")