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This release is compatible with DeepStream SDK 6.1.1 Ubuntu 20.04 Python 3.8 DeepStream SDK 6.1.1 Features: - New app deepstream-demux-multi-in-multi-out added - Updated deepstream_test_4.ipynb notebook - Change binding gst_nvevent_new_stream_reset() to gst_element_send_nvevent_new_stream_reset() - Deprecation: member "dims" of "NvDsInferLayerInfo" deprecated in favor of "inferDims" - Deprecation: member "atttributeIndex" of "NvDsInferAttribute" deprecated in favor of "attributeIndex" - Update to PeopleNet v2.6 for deepstream-test3 app
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| ################################################################################ | ||
| # SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved. | ||
| # SPDX-License-Identifier: Apache-2.0 | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| ################################################################################ | ||
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| Prerequisites: | ||
| - DeepStreamSDK 6.1.1 | ||
| - Python 3.8 | ||
| - Gst-python | ||
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| To run: | ||
| $ python3 deepstream_demux_multi_in_multi_out.py -i <uri1> [uri2] ... [uriN] | ||
| e.g. | ||
| $ python3 deepstream_demux_multi_in_multi_out.py -i file:///home/ubuntu/video1.mp4 file:///home/ubuntu/video2.mp4 | ||
| $ python3 deepstream_demux_multi_in_multi_out.py -i rtsp://127.0.0.1/video1 rtsp://127.0.0.1/video2 | ||
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| This document describes the sample deepstream_demux_multi_in_multi_out application. | ||
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| This sample builds on top of the deepstream-test3 sample to demonstrate how to: | ||
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| * Uses multiple sources in the pipeline. | ||
| * The pipeline uses `nvstreamdemux` to split batches and output separate buffer/streams. | ||
| * `nvstreamdemux` helps when separate output is required for each input stream. | ||
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| Refer to the deepstream-test1 sample documentation for an example of simple | ||
| single-stream inference, bounding-box overlay, and rendering. | ||
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| Nvstreamdemux reference - https://docs.nvidia.com/metropolis/deepstream/dev-guide/text/DS_plugin_gst-nvstreamdemux.html | ||
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| This sample accepts one or more H.264/H.265 video streams as input. It creates | ||
| a source bin for each input and connects the bins to an instance of the | ||
| "nvstreammux" element, which forms the batch of frames. The batch of | ||
| frames is fed to "nvinfer" for batched inferencing. "nvstreamdemux" demuxes batched frames into individual buffers. | ||
| It creates a separate Gst Buffer for each frame in the batch. For each input separate branch is created with the following elements in series | ||
| `nvstreamdemux -> queue -> nvvidconv -> nvosd -> nveglglessink` | ||
| So for two inputs, 2 separate output windows are created, likewise for N input N outputs are created. | ||
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| The "width" and "height" properties must be set on the stream-muxer to set the | ||
| output resolution. If the input frame resolution is different from | ||
| stream-muxer's "width" and "height", the input frame will be scaled to muxer's | ||
| output resolution. | ||
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| The stream-muxer waits for a user-defined timeout before forming the batch. The | ||
| timeout is set using the "batched-push-timeout" property. If the complete batch | ||
| is formed before the timeout is reached, the batch is pushed to the downstream | ||
| element. If the timeout is reached before the complete batch can be formed | ||
| (which can happen in case of rtsp sources), the batch is formed from the | ||
| available input buffers and pushed. Ideally, the timeout of the stream-muxer | ||
| should be set based on the framerate of the fastest source. It can also be set | ||
| to -1 to make the stream-muxer wait infinitely. | ||
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